bluuebunny/crossref_metadata_2025 huggingface dataset:
Synthesis of L‐Erythro‐α,β‐Dihydroxy‐GABA and γ‐Hydroxy‐L‐Erythronine by Oxidative Degradation of Amino‐4‐Pentenediols
Authors: Kirschbaum Bettina , Stahl Ulrich , Volker Jäger
Published: September 2010

The regioisomeric epoxy‐4‐pentenols B and D, readily accessible from 1,4‐pentadiene‐3‐ol A in high stereoisomer purity by Sharpless epoxidation, have been shown to produce various regio‐ and stereoisomers of amino‐4‐pentenediols in a controlled manner. The N‐protected derivatives of 1‐ and 3‐aminopentenediols 2 and 11, respectively, are suitable for oxidative degradation to amino acid derivatives. Subsequent hydrolysis provides the rare amino‐dihydroxy‐butyric acid hydrochlorides 9 and 15.
1,4‐Photoaddition of Five Captodative 2‐Aminoacrylonitriles to Methyl 1‐Naphthoate
Authors: Dietrich Döpp  , Mlinaric Birgit
Published: September 2010

Broadband (λ ≥ 280 nm) UV excitation of methyl 1‐naphthoate (1) in cyclohexane solution in the presence of 2‐aminoacrylonitriles 2b‐f results in a highly regio‐ and stereoselective [4+2]addition with formation of the tricyclic adducts 3b‐f as major products accompanied by minor amounts of one or two byproducts of hitherto unclarified connectivity and structure. The rel‐(1R,4R,9R)‐configuration is assigned to the main products on the basis of analogy and NOE‐intensity enhancement studies with compounds 3b,c.
Fused‐Skeleton Saturated Six‐Membered 1,3‐N,O, N,N and N,S Heterocycles. Fused‐Skeleton Aryl‐Substituted Saturated Isoindolones
Authors: Bernáth G.
Published: September 2010

In the introduction, a brief survey is given of the main types of fused‐skeleton saturated six‐membered 1,3‐heterocycles serving as model compounds in our earlier investigations and as starting compounds in the present studies. The synthesis and conformational analysis of aryl‐substituted fused‐skeleton saturated 1,3‐oxazines and of aryl‐substituted hetero‐condensed saturated isoindolones are treated. cis‐trans isomerization in the saturated isoindolone moiety of the resulting tricyclic, tetracyclic and pentacyclic systems is discussed in connection with the ring‐closure reactions of cis‐ and trans‐1,2‐disubstituted 1,2‐ and 1,3‐difunctional alicyclic compounds to give alicycle‐fused six‐membered 1,3‐heterocycles. The cycloaddition reactions of dihydro‐1,3 and 3,1‐oxazines and the conformations of the alicycle‐fused tetrahydrooxazine‐azetidinone derivatives obtained are presented. Methods are given for the preparation of saturated thiazolo‐ and thiazino[2,3‐b]quinazolinones. Unambiguous, mainly one‐pot syntheses for the preparation of 1,3‐heterocycles by a retro Diels‐Alder method are discussed.
Heterocycles of Hypervalent Sulfur and Selenium: New Syntheses and Structures
Authors: Reid D. H. , Ding Y. , Lai L. L. , Luh B. J. , Ngoi T. H.
Published: September 2010

This article describes synthetic and structural studies of heterocycles based on hypervalent sulfur and selenium, in particular 1,6,6aλ4‐triheterapentalenes, their monocyclic precursors and related compounds. What may be termed classical 1,6,6aλ4‐triheterapentalenes conform to structure (1), in which Y = S, Se or Te and X and Z are O, S, Se or NR [1]. Many aza analogues of (1) are known in which one or more ring carbon atoms at positions 2, 3, 4 and 5 are replaced by nitrogen atoms. In the majority of known 1,6,6aλ4‐triheterapentalenes, Y = S. Relatively few analogues are known in which Y = Se, and still fewer are known in which Y = Te. Analogues in which X and/or Ze is Te or PR have not hitherto been prepared.
2(1H)‐Pyrazinones and 2H‐1,4‐Oxazin‐2‐ones and their use in Heterocyclic Synthesis
Authors: Hoornaert Georges
Published: September 2010

The synthesis and functionalization of 3,5 dichloro‐2(1H)pyrazinones and the corresponding 2H‐1,4‐oxazin‐2‐ones is described. The use of their multifunctionalized 2‐azadiene system in cycloaddition reactions with electron‐rich and electron‐poor dienophiles and subsequent eliminations from the adducts of alkynes or nitriles is discussed. In this way pyridine or pyrazine derivatives can be obtained. Application of an intramolecular version of the cycloaddition‐elimination process is shown to yield c‐anellated 2(1H)pyridin(on)es from 2(1H)pyrazinones anchored with an appropriate side chain in position 3 or 6. The specific combination of a 2‐azadiene system, 3‐chlorimine group and a reactive lactone function in the 2H‐1,4‐oxazin‐2‐ones is demonstrated to generate specifically substituted oxazoles, triazoles and tetrazoles on reaction and further conversion with specific nucleophiles. The mechanism of these processes is briefly mentioned together with their application in the synthesis of nucleoside or alkaloid‐type compounds.
INTERNAL AND EXTERNAL IMPLICATIONS OF THE STRUCTURE OF HYDROGEN BONDED COMPLEXES . II. MNDO‐PM3 STUDIES ON THE STRUCTURE OF THE 4‐METHYLPYRIDINE COMPLEX WITH PENTACHLOROPHENOL
Authors: Koll A. , Majerz I.
Published: September 2010

The structure of the complex of 4‐methylpyridine with pentachlorophenol in the gas phase was determined by the MNDO‐PM3 procedure and compared with the experimental crystallographic structure. The calculated potential for internal rotation around the hydrogen bond axis predicts a free rotation in the gas phase and a large ability of the complex to adapt its shape to the requirements of the crystal packing. The influence of different internal and external factors on the structure of the studied complex is discussed.
EXITON CHIRALITY METHOD: A TOOL FOR THE CHIRALITY DETERMINATION OF 7,8‐DIDEOXY‐L‐GLYCERO‐D‐MANNO‐OCT‐7‐YNOPYRANOSE
Authors: Elloumi Nabila , Aguiar Leila , Capmau Marie Louise
Published: September 2010

A pyranose pathway degradation leads to a 1,2,3‐pentane triol, configuration of which can be confirmed by circular dichroïsm after derivatisation.
SYNTHESIS OF 5‐HYDROXY‐3‐TRIFLUOROMETHYL‐PYRAZOLES BY RING OPENING OF 3‐TRIFLUOROACETYL‐BENZOLACTAMS
Authors: Bouillon J. P. , Janousek Z. , Viehe H. G. , Tinant B. , Declercq J. P.
Published: September 2010

New trifluoromethylated pyrazoles 5b,c,f have been prepared by condensation of 3‐trifluoroacetyl benzolactams 1a,b,c and 2 with hydrazines by opening of the lactam moiety. The structure of pyrazoles was established by X‐ray diffraction analysis and by comparison of 13C‐NMR data. The geometry of intermediate hydrazones 3c‐e and their cyclisations were also investigated.
SOLID‐SOLID INTERACTIONS IN PURE AND Li2O‐DOPED V2O5/AI2O3 SYSTEM
Authors: Abdalla F. H. A. , El‐Shobaky G. A. , Hassan N. A.
Published: September 2010

The effects of calcination temperature (500‐1000°C) and lithium oxide‐doping (4 and 10 mole %) on solid‐solid interactions between AI2O3 and V2O5 were investigated using DTA, TG and their derivatives together with XRD techniques.

The results obtained revealed that no solid‐solid interaction between vanadium and aluminium oxides occured at 500°C. These oxides interacted in part, at 650°C to produce AIVO4, the completion of this reaction requires a prolonged heating at this temperature. Li2O‐doping much enhanced the interaction yielding AIVO4, the presence of 4 mole % was found sufficient to stimulate the complete conversion of V2O5 into aluminium vanadate. Aluminium vanadate produced in the case of pure mixed solids decomposed entirely by heating at 750°C giving a well crystallized V2O5 and an amorphous alumina. On the other hand, lithium oxide‐doping much increased the thermal stability of AIVO4 at 750°C and led also to the formation of AIVO3 and LiV10O25 phases.

The heating of pure mixed oxides in air at 1000°C resulted in the formation of alpha‐alumina (corrundum) together with V2O5. This treatment, in the case of doped mixed solids, effected the formation of alpha‐Al2O3, V2O5 and LiV10O25 phases. The last compound was formed at 750°C and remained stable by heating at 1000°C. The promotion effect of Li2O in AIVO4 formation was tentatively attributed to dissolution of a small portion of Li2O in V2O5 lattice with subsequent increase in the mobility of V+5 ions.
L'UTILISATION DE 1,5‐BENZODIAZEPINES EN SYNTHESE HETEROCYCLIQUE
Authors: Essassi E. M.
Published: September 2010

The synthetic approaches to 1,5‐benzodiazepin‐2‐ones derivatives were described. These coumpounds were used as precursors in the synthesis of new heterocyclic systems.
A SIMPLE AND EFFICIENT METHOD FOR PREPARATION OF ALLYL ARYL ETHERS VIA POLYMER SUPPORTED REAGENTS
Authors: Salunkhe M. M. , Thorat M. T. , Mane R. B. , Sande A. R. , Wadgaonkar P. P.
Published: September 2010

Allyl aryl ethers were synthesized in excellent yields and in a state of high purity by reaction of polymer‐supported phenoxide ions with allyl bromide in ethanol at room temperature.
UNEXPECTED DIMERS IN THE SYNTHESIS OF 2‐STYRYLINDOLIZINE
Authors: Nasielski J. , Siberdt F. , De Bue G.
Published: September 2010

On treatment with base, N‐cinnamoylmethyl‐α‐picolinium bromide 3 gives dimers 4 and 5 of 2‐styrylindolizine 1 originating from the Diels‐Alder condensation of the picolinium dienophile 3 with 2‐styrylindolizine or from the self‐condensation of the unsaturated ketone 3. Deuterium labelling allows to prefer the second proposal 2‐β‐Styrylindolizine 1 could be obtained with a 70 % yield by dropping a very dilute solution of salt 3 into a concentrated solution of base.
QUANTUM CHEMICAL CI‐1 ANALYSIS OF UV ABSORPTION SPECTRA OF 1H‐PYRAZOLO[3,4‐b]QUINOLINE SYSTEM
Authors: Pietrzycki Władysław , Danel Andrzej , Tomasik Piotr
Published: September 2010

Simulations of UV‐absorption spectra in the region of 200 to 360 nm of 1‐methyl‐3‐phenyl‐, 1‐phenyl‐3‐methyl‐ and 1, 3‐diphenyl‐pyrazolo [3,4‐b]quinolines were carried out. The simulations involved CNDO/S‐CI‐1 calculations of energies, oscillator strengths and eigenvectors of monoexcited singlet states. The UV absorption in the three‐fused ring system of unsubstited 1 H‐pyrazolo[3, 4b]quinoline (PQ) is very similar to the UV absorption of two‐fused six‐membered quinoline or naphtalene systems. The very strong absorption in the region of 242 nm belongs to the 1Bb band, whereas the most longwavelength maximum at 329 nm is qualified as the 1Lb band. On the contrary, the 1,3‐disubstituted PQ derivatives show the UV absorption similar to the acenes with three‐fused six‐membered system and acridine. The 1La band is the most longwavelength located maximum. The overlapped 1Lb band in the UV spectra of three‐fused six‐membered ring compounds appears in the spectra of 1‐phenyl‐3‐methyl‐ and 1,3‐diphenyl‐derivatives.

The position of the 1Bb band is the most sensitive to substituent effects from the 1‐position of the system.
Condensation of Ethyl Acetoacetate with Naphthalene‐Diols. The Synthesis of some Novel Coumarins and Chromones. Part 1
Authors: Oyman Ulku , Gunaydin Keriman
Published: September 2010

In Simonis reaction with ethyl acetoacetate naphthalene‐2,6‐diol gives 8‐hydroxy‐3‐methyl‐1H‐naphtho[2,1‐b]‐pyran‐1‐one and naphthalene‐2,7‐diol gives the related 9‐hydroxy isomer. In Pechman reactions, the former diol yields a coumarin, 8‐hydroxy‐1‐methyl‐3H‐naphtho[2,1‐b]‐pyran‐3‐one, with the corresponding orientation, but the latter diol gives a coumarin, 8‐hydroxy‐4‐methyl‐2H‐naphtho[2,3‐b]‐pyran‐2‐one, with an unusual linear annelation pattern.
PREPARATION ET CARACTERISATION DES CYCLOHEXAPHOSPHATES: M2IIM2IP6O18.8H2O AVEC MII: Cu, Zn ET MI: Rb, Tl, K, NH4
Authors: Abid S. , Rzaigui M.
Published: September 2010

Six new cyclohexaphosphates with general formula M2IIM2IP6O18.8H2O (MII: Cu2+, Zn2+ and MI: Rb+, Tl+, K+, NH4+) have been prepared. Synthesis and characterization by X‐ray diffraction, IR absorption and DTA are given. All these cyclohexaphosphates crystallize with triclinic unit cells and are isotypic. We give as example the parameters of Cu2Rb2P6O18.8H2O: a = 7.438(3), b = 9.257(3), c = 9.615(3) Å, α = 116.02(2), β = 107.04(2), γ = 83.34(2); Z = 1; PT; V = 569 Å3; Dx = 2.674 g cm−3.
RUTHENIUM CARBONYL CLUSTERS AS CATALYSTS IN THE WATER GAS SHIFT REACTIONS
Authors: Moya Sergio , Sariego Renato , Aguirre Pedro , Sartori Rebeca , Dixneuf Pierre
Published: September 2010

The catalytic activity of Ru3(CO)9 L3 (L = arylphosphine) in the WGSR and in the reduction of nitro derivatives to amines is studied. The same complex is supported in polystyrene‐divinylbenzene copolymer (PSDVB) and the catalytic activity of this heterogeneous material on the fore mentioned reactions is herein studied. In the same way, Ru3(CO)12 is reacted with PSDVB, previously functionalized with 1,2‐ethylenediamine, giving an active catalyst for these reactions.
SYNTHESIS, CHARACTERIZATION AND IODODEMETALLATION REACTIONS OF 3‐(TRIPHENYLSTANNYL)‐1,2‐PROPANEDIOL
Authors: Kayser François , Biesemans Monique , Delmotte Ann , Willem Rudolph , Gielen Marcel
Published: September 2010

The syntheses of 3‐(triphenylstannyl)‐, 3‐(iododiphenylstannyl)‐ and 3‐(diiodophenylstannyl)‐1,2‐propanediol are reported. These compounds were characterized by 1H, 13C and 119Sn NMR, Mössbauer and mass spectroscopy. Their in vitro antitumour activities are likewise reported.
GAS PHASE HYDROGENATION/HYDROGENOLYSIS OF ISOPHTHALDEHYDE OVER NI/SIO2
Authors: Keane Mark A.
Published: September 2010

The gas phase hydrogen treatment of methanolic solutions of isophthaldehyde (IPA), in the temperature range 393 K ≤ T ≤ 653 K, was studied over a Ni/SiO2 catalyst prepared by homogeneous precipitation/deposition. The products, identified as 3‐methylbenzyl alcohol, m‐xylene, toluene and benzene resulted from the hydrogenation and/or the hydrogenolysis of the substituent C = O bonds and from the hydrogenolysis of the aryl‐carbonyl C‐C bonds; the aromatic ring remained intact. The temperature dependence of the rate constant and product selectivity are illustrated. It is concluded that both carbonyl substituents interact with the catalyst and that all the products are generated via a concerted hydrogen attack on both carbonyl groups; the overall reaction pathway is identified. The reaction of benzaldehyde and 3‐methylbenzyl alcohol over the same catalyst was also investigated for comparative purposes.
REACTIONS ENE AVEC LA P‐CHLORO(BISTERIMETHYLSILYL)METHYLENE PHOSPHINE
Authors: Abbari M. , Ueno Y. , Sinbandhit S. , Carrié R.
Published: September 2010

P‐Chloro (bistrimethylsilyl) methylene phosphine gives ene reactions with simple alkenes and with α‐ethylenic hydrazones. Aza Diels Alder reactions are not observed with latter compounds but are possible when the azadiene bears electro‐donor substituants.
STUDIES ON THE PRENYLFLAVONOIDS PART XV. SYNTHESIS OF (±)‐SPINOFLAVANONE B
Authors: Zhao Lianyun , Bu Xianyong , Li Yulin
Published: September 2010

Spinoflavanone B was prepared for the first time by the condensation of 2‐hydroxy‐4, 6‐dimethoxy‐methoxy‐3,5‐diprenylacetophenone with benzaldehyde followed by cyclization and demethoxymethylation.
COMPLEXES OF SOME METAL IONS WITH A SCHIFF BASE LIGAND DERIVED FROM ISATIN AND O‐AMINOPHENOL
Authors: Hassaan Aly M. , Khalifa Mohamed A. , Shehata Aziza K.
Published: September 2010

A series of new metal chelates of Ni(II), Co(II), Cu(II), Fe(III), Zn(II), Cd(II) and La(III) with a Schiff base ligand formed by condensation of isatin with o‐aminophenol have been synthesized and characterized via elemental analyses, infrared, electronic spectral data, proton nuclear magnetic resonance spectra, conductivity and magnetic measurements. Two types of complexes were isolated. The [M(IAP)2]nH2O complexes in which two molecules of the ligand are coordinated to the central metal Ion as bis‐uninegative ONO tridentate forming electrolytic and non‐electrolytic octahedral complexes. On the other hand, the dimeric [M(IAP)CIH2O]2 complexes attain the octahedral structure owing to the bridging nature of the ligand.
STUDIES ON SYNTHESIS , CHARACTERIZATION AND ANTITUMOR ACTIVITY OF TERNARY COMLPEXES OF PYRUVIC ACID ISONICOTINOYL HYDRAZONE AND 5‐FLUOROURACIL‐1‐ACETIC ACID WITH RARE EARTHS
Authors: Zhengyin Yang , Rudong Yang , Liufang Wang , Xinping Yang
Published: September 2010

Thirteen ternary complexes of pyruvic acid isonicotinoyl hydrazone(H2PPFH) and 5‐fluorouracil‐1‐ acetic (HFAA) with rare earths have been synthesized in the paper. The structure and properties of the ternary complexes were determined by elemental analyses, infrared and ultraviolet spectra, molar conductivity and1H NMR. A general formula of the complexes is RE(PPFH)(FAA)2H2O (RE(III) = La–Yb). Antitumor activity of La(PPFH) (FAA) 2H2O was tested with Leukaemia cells L1210and transplanted mouse tumor colon cancer C27. The results show that the inhibitory rate for C27is 41.2%.
LES ENZYMES EN SYNTHESE ORGANIQUE IX: ACYLATION ENZYMATIQUE DE AMINES SECONDAIRES CYCLIQUES
Authors: Djeghaba Zeineddine , Deleuze HervÉ , Maillard Bernard , De Jéso Bernard
Published: September 2010

Enzymatic acylation of cyclic secondary amines was performed in organic solvant. Best results were obtained with Horse Liver Acetonic Powder (HLAP). Acyclic secondary amines were not substrate for several lipases or esterases.
SELECTIVITY IN HDS, HDN, HDO AND HYDROCRACKING CONTRIBUTION OF REMOTE CONTROL AND OTHER NEW CONCEPTS
Authors: Delmon Bernard
Published: September 2010

This paper reviews some recent results in the field of hydrotreatment by sulfide catalysts. It comes in complement to a former review on the subject (1), by focusing more on new insights into the structure of the conventional CoMo (or NiMo) catalysts and the way they catalyze the various reactions involved. A first part constitutes an attempt to make an inventory of the types of catalytic sites: hydrogenation sites, sites active for the hydrogenolysis of carbon‐heteroatom bonds, acidic sites either on the sulfide phase (probably ‐SH groups) or situated on the support. A second part discusses the influence of the morphology of the MoS2crystallites, in particular the possibility that different catalytic functions be located on the rims and on the lateral edges. The variation in selectivity of the hydrotreatment catalysts as a function of the reaction conditions and their relative stability when the catalysts ages point to factors which are Independent of initial morphology. The role of spillover hydrogen will be illustrated by new examples of our laboratory concerning hydrodenitrogenation, on the one hand, and the dramatic increase of acidity of silica alumina (by a factor of more than 10) under the influence of spillover hydrogen emitted by a sulfided CoMo/Sio2catalyst, on the other hand. In the latter experiment, the hydrocracking of diphenyl methane served as a test reaction and the role of spillover was substantiated by H‐D exchange experiments. In a last part, some prospects offered by the new advances will be outlined with a special emphasis on the controlled Interconversion of sites due to remote control by spillover hydrogen. The new concepts can very likely be extended to many areas of hydrotreatment.
CoMo/Al2O3 VERSUS NiMo/Al2O3 SULPHIDE CATALYSTS : SENSITIVITY TO REACTION CONDITIONS FOR HDS AND HYDROGENATION
Authors: van Gestel J. , Finot L. , Leglise J. , Duchet J. C.
Published: September 2010

Two industrial hydrotreating catalysts, CoMo/Al2O3 and NiMo/Al2O3, were compared with respect to their activity and selectivity In thiophene hydrodesulphurisation and cyclohexene hydrogenation at 280°C and 4 MPa. Their difference in catalytic properties for HDS and hydrogenation was found strongly dependent on the experimental conditions. Addition of small amounts of H2S to the feed inhibits the activity of both catalysts; but at high H2S levels, the catalysts remain active. A new type of site is proposed to operate at high H2S levels. The NiMo catalyst was found far more active than the CoMo catalyst at low H2S pressure, while the two catalysts became equivalent at high H2S levels.
THE INFLUENCE OF WATER ON THE SULFIDATION OF CoNaY STUDIED BY MÖSSBAUER EMISSION SPECTROSCOPY, EXTENDED X‐RAY ABSORPTION FINE STRUCTURE AND THIOPHENE HDS ACTIVITY
Authors: De Bont P. W. , Vissenberg M. J. , Boellaard E. , van Santen R. A. , De Beer V. H. J. , Van Kraan A. M. Der
Published: September 2010

The influence of physisorbed water on the sulfidation of an ion exchanged CoNaY catalyst is studied by MÖSSBAUER EMISSION SPECTROSCOPY , EXTENDED X‐RAY FINE STRUCTURE AND THIOPHENE HDS ACTIVITY Hydrodesulfurization activity measurements. Physisorbed water present during sulfidation affects the Co‐sulfide dispersion and the initial HDS activity. Its removal prior to sulfidation clearly results in an improvement of these two catalyst parameters.
EFFECT OF THE H2S AND H2PARTIAL PRESSURE ON THE HYDRODENITROGENATION (HDN) OF ANILINE AND INDOLE OVER A NiMoP‐γAL2O3CATALYST
Authors: Callant Marc , Holder Keith A. , Grange Paul , Delmon Bernard
Published: September 2010

We studied the effect of the H2S and the H2partial pressures on the competitive HDN of aniline and indole over a NiMoP‐γAl2O3catalyst. The reactions were carried out with a continuous‐flow reactor at 5 MPa and 573 K. Our results confirm that H2S has a promoting effect on the C‐N bond cleavage and a detrimental effect on hydrogenation but, in contrast to what is reported in the literature, we found that the global effect of H2S on nitrogen removal is negative. We explained this difference by the fact that, in our experiments, HDN is controlled by the hydrogenation function of the catalysts. H2has an effect opposite to H2S and the parameter that can be considered is the ratio H2S/H2.
Computer Modelling of a Molybdenum Disulfide Catalyst: Density Functional Calculations on Molybdenum‐Sulfur Clusters
Authors: Mitchell P. C. H. , Plant C.
Published: September 2010

Preliminary calculations using the Density Functional Theory (DFT) method on saturated and unsaturated molybdenum‐sulfur clusters which model the active site of a molybdenum disulfide catalyst are reported. Creating an edge vacancy at molybdenum by removing sulfur atoms causes the energy of the HOMO to increase; the catalyst is a better electron donor. At the same time the charge density on basal sulfurs increases enhancing the ability of the basal plane to Interact with α‐orbitals of the thiophene molecule. Changes in the HOMO energies and the charge densities depend on the structure of the catalyst, In particular on the separation between unsaturated Mo atoms at the active site.
Comparative Study of Sulfide Ni‐Mo Catalysts, Supported on y‐al2o3 and Activated Carbon by Using Radioisotope 35s
Authors: Kogan Victor M. , Dung Nguen Thi , Yakerson Vladimir I.
Published: September 2010

Using radioactive Isotope 35S a comparative study of C‐ and Al2O3‐supported MoS2 catalysts promoted by Nl in hydrodesulfurization of thiophene has been performed. Ni content varied from O up to 3.5%. Promotion effect on thiophene conversion and catalyst sulfide sulfur mobility has been studied. C‐supported catalysts have been found to have higher catalytic activity than analogous alumina‐supported ones. Active site productivity in both C‐ and Al2O3‐supported catalysts is the same but the number of active sites in the former is larger than in the latter.
TPR and FTIR Study of Nitrided Molybdena‐Alumina Catalyst
Authors: Nagal M. , Kusagaya T. , Miyata A. , Oml S.
Published: September 2010

Nitrided 11.7% and 97.1% molybdena‐alumina catalysts have been Investigated using temperature‐programmed reaction with hydrogen (TPR) and diffuse reflectance FTIR connected to a mass spectrometer with the aid of XRD analysis. From the TPR and XRD analyses, y‐Mo2N was formed on the surface of the 11.7% and 97.1% Mo/Al2O3 nitrided at 700°C. On the basis of the NH3‐TPD and IR spectroscopies, much more Lewis acid sites than Brønsted acid sites are present on the surface of the nitrided molybdena‐alumina.
Structural Stability of Binary Sulfide Catalysts During the Hydrotreating of Coal‐Derived Liquids
Authors: Shimada Hiromichi , Matsubayashi Nobuyuki , Imamura Motoyasu , Sato Toshio , Yoshimura Yuji , Kameoka Takashi , Masuda Koji , Nishijima Akio
Published: September 2010

The structures of the supported binary sulfide catalysts, such as Ni‐Mo/Al2O3 or Ni‐W/Al2O3 catalysts, used in hydrotreating were analyzed by the X‐ray absorption fine structure method. The catalytically active phase of the “Ni‐Mo(W)‐S” structure was found to decompose into bulk single sulfides, particularly when the feedstock contained large amounts of nitrogen‐ or oxygen‐containing compounds. The active phase was able to be recovered by careful calcination of the segregated catalyst followed by sulfiding.
LOW TEMPERATURE SYNTHESIS OF METAL NANOMETER SCALE PARTICLES IN TRIETHYLAMINE MEDIUM
Authors: Kondakov Sergei E. , Smirnov Vladimir V. , Olenin Andrei YU.
Published: September 2010

The process of metal cluster formation has been studied in conditions of metal vapor synthesis with tertiary amines. The samples have been investigated by IR, UV‐VIS, ESR and photon correlation spectroscopy. For the first time the nature of matrix complexes of the free metal and triethylamine have been discussed in terms of donor‐acceptor properties. It has been shown that the using of triethylamine as cryomatrix leads to the formation of stable ultrafine (Mg, Mn, Cu, Na, Sm, Pb) metal particles. Key words: metal clusters, metal vapor synthesis, cryochemical synthesis, size of particles, triethylamine.
STUDIES IN THE AZOLE SERIES. CIV.1 EXPERIMETAL AND CALCULATED DIPOLE MOMENTS OF 3(5)‐PHENYLPYPRAZOLES
Authors: Cativiela Carlos , García JosÉ Ignacio , Fayet Jean‐Pierre , Elguero JosÉ
Published: September 2010

The experimental dipole moments of four pyrazoles, namely 3(5)‐phenyl‐5(3)‐methylpyrazole 4, 1,5‐di‐methyl‐3‐phenylpyrazole 10, 1,3‐dimethyl‐5‐phenylpyrazole 11 and 1‐methyl‐3,5‐diphenylpyrazole 12, were combined with literature data on other pyrazoles (only H, CH3 and C6H5 substituents) to discuss the structure and tautomerism (NH derivatives) of these compounds. Ab initio theoretical calculations, up to 6‐31G**/3‐21G level were carried out to get a deeper insight on their structure, particularly on the conformation of the phenyl groups. The main conclusion is that a phenyl group near the “imine” nitrogen enhances the dipole moment of pyrazoles.
BENTONITE K10 CLAY, AN EFFICIENT CATALYST FOR THE FORMATION OF NITROGEN DERIVATIVES
Authors: Eynde Jean Jacques Vanden , Mayence Annie , Lor Pascal , van Haverbeke Yves
Published: September 2010

Bentonite K10 clay has been used to catalyze the formation of enamino carbonyl derivatives, 2‐methyl‐1H‐benzimidazoles, Hantzsch 1,4‐dihydropyridines, Hantzsch pyridines, 2‐substituted 1,3‐diphenylimidazolidines, and tetrahydropyranylbenzazoles.
DETERMINATION OF TOTAL CR IN STEEL BY MEASUREMENT OF A VIOLET CR(VI) COMPLEX BY FIA‐SPECTROPHOTOMETRY
Authors: Sun Junying , Chen Xingguo , Hu Zhide
Published: September 2010

A new simple, rapid and sensitive spectrophotometric flow injection analysis (FIA) method is developed for the determination of chromium(VI) based on its reaction with 3,5‐Br2‐PADAP and SCN°‐ in a strongly acidic medium. This produces an unstable violet product with a maximum absorption at 605 nm. As the product formed is unstable, FIA is an ideal method to reproducibly monitor the transient signal. The calibration curve is linear over 1.0 × 10–6 to 7.0 × 10–5 mol l–1. The correlation coefficient of the calibration curve is 0.9998, the detection limit is 5.0 × 10–7Cr2O72‐ mol l–1 and sample throughput is 80 h–1. The method has been successfully applied to the determination of chromium in steel.
SYNTHESE ET CARACTERISATION DE TROIS NOUVEAUX CYCLOHEXAPHOSPHATES: LI3M3P6O18.H2O. M: Rb, TI et NH4
Authors: Elmokhtar Ould Sidi Mohamed , Rzaigui Mohamed
Published: September 2010

Chemical preparation and characterization by X‐ray diffraction and IR absorption are reported for three new cyclohexaphosphates: Li3M3P6O18.H2O with M = Rb, TI, NH4. These compounds are isotypic. Their hexagonal unit cell parameters are a = 15.165(4), c = 13.100(4) Å for Rb salt, a = 15.182(4), c = 13.100(4) Å for TI salt and a = 15.077(3), c = 12.855(2) Å for NH4 salt. Space group R3, Z = 6.
Photochemistry Synthesis and Characterization of Benzocycloheptan‐1,5‐Dione Derivatives
Authors: Mansri Ali , Casals Pierre‐FranÇOis , Fan Bo Tao
Published: September 2010

Some new benzocycloheptan‐1,5‐diones derivatives I (3: R = t‐Bu, R' = H; 4: R = Ph, R' = H; 5: R = PhCOCH2, R' = H; 6: R = CH3COCH2, R' = H; 7: R = t‐Bu, R' = ethenyle and 8: R = Ph, R' = ethenyle) were synthetized through photocycloaddition of 2‐acylindan‐1,3‐diones 2 with styrene and paradivinylbenzene (pDVB) respectively.

The reaction proceeds regioselectively at the endocyclic enol. This regioselectivity was not observed on the linear β‐triketones, previously reported [1]. The formation of a double addition product paradi‐(2,5‐dioxo‐6‐(2,2‐dimethylpropionyl)‐benzocycloheptyl)‐benzene 9 shows how a network could be formed if these 2‐acylindan‐1,3‐diones 2 moities are graft in side chains of macromolecules. The enolic equilibrium of the obtained benzocycloheptan‐1,5‐ diones derivatives, are discussed. Every products were characterized by means of elemental analysis and IR, UV, 1H and 13C NMR spectroscopies.
Condensation 2‐Methyl Indole/Juglone. Synthese De la Premiere 3,8‐Diindolyl‐5‐Hydroxy‐1,4 Naphtoquinone
Authors: Henrion Jean‐Christophe , Jacquet Bernard , Hocquaux Michel , Lion Claude , Barre Gilles
Published: September 2010

Addition of two 2‐methyl indole residues to 5‐hydroxy‐1,4‐naphthoquinone leads to the unknown 3,8‐di‐(2‐methyl‐3‐indolyl)‐5‐hydroxy‐1,4‐naphthoquinone, first example of the new 3,8‐di‐indoly‐1,4 naphthoquinones series.
Reversed “Inverse Superatoms” (Double Fullerene‐Type Systems)
Authors: Balaban Alexandru T. , Seitz Wiliam A. , Klein Douglas J.
Published: September 2010

Unlike the C60@Si60 “inverse superatom” described by Osawa et al., the present paper discusses double cages formed from Si60 cages inside carbon fullerene‐type cages.
The Total Synthesis of (±)‐Isopisiferin Methyl Ether
Authors: Wang Xuechao , Cui Yuxin , Pan Xinfu , Chen Yaozu
Published: September 2010

A novel and effective convergent synthesis of (æ)‐isopisiferin methyl ether, a rearranged abietane diterpene, having a hexahydrodibenzo [a,o'] cycloheptene ring system, was achieved by Wittig reaction, selective hydrogenation and selective oxidation.
Synthesis of Some New Pyrazolo[4,3‐B]Pyridine, Pyridine, Pyrazolo[1,5‐A]Pyrimidine and Thiazole Derivatives
Authors: El‐Taweel Fathy M. A.
Published: September 2010

Several new pyrazolopyridines 6a‐e and pyridines 9a,b and 20a‐d prepared by reacting 4‐substituted pyrazolones 1a‐c with the ylidenenitriles 2 or 3. Reaction of 5‐aminopyrazole 21 with ethyl acrylate or ethyl bromopropionate afforded pyrazolo[1,5‐a]pyrimidine 22. The thiazole derivatives 27 were prepared via reaction of 24 with 2a,b,g or 2h,i,k or by condensation of 24 with aromatic aldehydes and acetophenone.
Crystal Structure of (2r*,3s*)‐n,n,2‐Trimethyl‐2,3‐Diphenylpent‐4‐Enamide
Authors: Feneau‐Dupont J. , Declercq J. P. , Patiny L.
Published: September 2010

C20H23NO, Mr = 293.39, monoclinic, C2/c, a = 19.541(2), b = 7.159(1), c = 24.147(2)Å, β = 92.65(1), V = 3374.4(5)Å3, Z = 8, Dx = 1.16g.cm−3, CuKα radiation (λ = 1.54178Å). The final R indice is 0.055 for 2416 observed reflections.
1,3‐Dipolar Cycloaddition Reactions of Some 3‐Aryl‐Phthalazinium‐1‐Olates, Part II
Authors: Çelebi N. , Kayalidere I. , Türker L.
Published: September 2010

Reactions of some new 3‐aryl‐phthalazinium‐l‐olates were studied with olefinic and acetylenic dipolarophiles giving the expected cycloadducts. However, the cycloaddition of 3‐(4',6'‐dimethylpyrimidin‐2'‐yl)‐phthalazinium‐l‐olate with ethyl acetylenecarboxylate was not regioselective and gave a mixture of two possible regioisomers.
Nitration de Benzimidazoles Substitues
Authors: Benchidmi M. , El Kihel A. , Essassi E. M. , Knouzi N. , Toupet L , Danion‐Bougot R. , Carrié R.
Published: September 2010

The mononitration of some 2‐Alkyl‐5(6)chloro‐(or methyl‐) benzimidazoles was carried out because the chemical literature results were ambiguous. Our work has shown that the nitro group was introduced in 6 (or 5) position.
Crystal Structure of (2R*,5R*)‐1‐(Anilinocarbonyl)‐2,5‐Bis [(1‐Methoxy‐1‐Methyl)Ethyl]Pyrrolidine
Authors: Feneau‐Dupont J. , Declercq J. P. , Patiny L.
Published: September 2010

C19H30N2O3, Mr = 334.45, monoclinic, Pc, a = 9.933(2), b = 6.485(2), c = 14.869(2)Å, β = 99.82(2)°, V = 943.8(3)Å3, Z= 2, Dx= 1.18g.cm−3, CuKα radiation (λ = 1.54178Å). The final R indice is 0.042 for 1539 observed reflections.
Crystal Structure of (3S,4R)‐4‐Iodomethyl‐2,2‐Dimethyl‐3‐Phenyl‐4‐Butanolide
Authors: Feneau‐Dupont J. , Declercq J. P. , Patiny L.
Published: September 2010

C13H15IO2, Mr = 330.15, orthorhombic, P212121, a = 6.139(1), b = 10.047(2), c = 21.134(5)Å, V = 1303.5(5)Å3, Z = 4, Dx= 1.68g.cm−3, MoKα radiation (λ = 0.71069Å). The final R indice is 0.044 for 1735 observed reflections
Alkylation Studies with Isopropylidene Malonate under PTC and Dibenzo‐(18)‐Crown‐6
Authors: Kore A. R. , Mane R. B. , Salunkhe M. M.
Published: September 2010

Isopropylidene malonate (2,2‐dimethyl‐4,6‐dioxo‐1,3‐dioxane, Meldrum's acid) has a high acidity (pK1 = 4.97), a rigid cyclic structure and can undergo easy hydrolysis. It has become an attractive reagent in organic synthesis.1 For example, it can readily undergo Knoevenagel condensation,2‐5 Michael addition,6‐7 and acylation8,9 reactions. However, few reports on its alkylation are reported. 10‐13 On alkylation of isopropylidene malonate under (20% aqueous sodium hydroxide (TEBA) the ring underwent cleavage and the main product was α,α‐dimethylmalonic acid methyl ester. This problem was solved by the use of solid potassium carbonate in place of 20% aqueous sodium hydroxide to avoid hydrolysis and let the reaction undergo under solid‐liquid phase‐transfer conditions.14 However, these require reflux conditions and prolonged reaction times (4 to 8 h.). Our results on the use of combination of a phase‐transfer catalyst and crown ether15 promoted us to investigate the bis alkylation studies with isopropylidene malonate.
Quadrupole ICP ‐ Mass Spectrometry for the Determination of The Aqua Regia Soluble Content of Trace Metals in Soil and Sludge Candidate Reference Materials
Authors: Vanhaecke Frank , Vanhoe Hans , Moens Luc , Dams Richard
Published: September 2010

In the framework of a certification campaign, organised by the European Community Bureau of References (BCR), quadrupole inductively coupled plasma ‐ mass spectrometry (ICP‐MS) was used for the determination of the aqua regia soluble contents of Mn, Co, Ni, Cu, Zn, Cd, Hg and Pb in three different soil and sludge candidate reference materials (BCR CRM 141R, 144R and 146R). Especially for the transition metals, for which accurate quantitation is often hampered by the presence of spectral interferences, great care was taken in avoiding systematic errors due to overlap with signals from polyatomic ions and/or isobaric nuclides showing the same nominal mass as the nuclides of interest. Si‐based interferences were avoided by additional HF‐treatment of the samples obtained after aqua regia extraction. The presence of other potential interferences was checked by registration of signal behaviour plots (signal intensity as a function of the nebulizer gas flow rate) and/or measurement with a high resolution ICP ‐ mass spectrometer. In order to obtain the highest accuracy possible, both external standardization and the method of standard additions were used for calibration and the results obtained were compared. Hence it was shown that, despite the use of an internal standard, for some elements accurate results could only be obtained using the method of standard additions. Finally, for Hg and Pb, besides the calibration techniques already mentioned, also isotope dilution was used. For all materials analysed, the results obtained are in excellent agreement with the values finally certified.
Qualitative Comparison of the Powder Diffraction Pattern of 1,1,2,4,4,7‐Hexamethyl‐6,8‐Dinitrotetralin with its Calculated Powder Diagram and that of 1,1,2,4,4,7‐Hexamethyl‐5,6‐Dinitrotetralin
Authors: De Ridder Dirk J. A. , Driessen René A. J. , Goubitz Kees , Schenk Henk
Published: September 2010

The powder diffraction patterns of 1,1,2,4,4,7‐hexamethyl‐6‐nitrotetralin (1) and 1,1,2,4,4,7‐hexamethyl‐6,8‐dinitrotetralin (2) have been recorded and are qualitatively compared with the powder diffraction diagrams calculated from the respective single‐crystal structures, showing good agreement. The observed diffractogram of (2) is also compared with the powder diagram calculated from the single‐crystal structure of 1,1,2,4,4,7‐hexamethyl‐5,6‐dinitrotetralin (3), showing significant differences.
Synthesis of New 1,3‐Dioxepin Derivatives
Authors: Tahnh Naciye , Sirkecioglu Okan , Mirzalar Filiz
Published: September 2010

Using cis‐2‐buten‐1,4‐diol and mono and dicarbonyl compounds eleven new 4,7‐dihydro‐1,3‐dioxepin derivatives were synthesized. Structures were proved by spectroscopic methods.
Water Solubility of Sparingly Soluble Salts of Weak Acids and/Or bases. Improved‐Accuracy Calculation Methods
Authors: Giomini Claudio , Marrosu Giancarlo , Cardinali Mario E.
Published: September 2010

Methods are described for accurate calculations of the water solubilities of sparingly‐soluble salts derived from weak acids and/or bases, when the known data are the solubility product and the ionization constants. Various cases are considered, with their possible extensions. Two successive‐substitution, always‐converging algorithms are developed for a rigorous treatment of some cases, for which also an approximate treatment is proposed. For other cases, an interval‐bisection algorithm is suggested. Conditions under which the conventional formulae can be safely employed are established. Practical examples of calculations are given and discussed.
New Trifluoromethylated Imidazolidines, Oxazolidines and Thiazolidines Starting from 3‐(1,1‐Dihydroxy‐2,2,2‐Trifluoroethyl)‐1‐Methyl‐Tetrahy‐Droazepin‐2‐one and α‐(1,1‐Dihydroxy‐2,2,2‐Trifluoroethyl)‐γ‐Butyrolactone
Authors: Bouillon J. P. , Ates C. , Janousek Z. , Viehe H. G. , Tinant B. , Declercq J. P.
Published: September 2010

Heterocyclisations of 1,4‐bis‐nucleophiles with the tetrahydroazepin‐2‐one 1 and γ‐butyrolactone 2 gave imidazoline 9, 12, oxazolidines 3, 10, 13, 15 and thiazolidine 4 as a mixture of two diastereoisomers in various proportions. The structure and the relative configurations of these heterocycles were established by X‐ray diffraction analysis and by comparison of 19F‐ and 13C‐NMR data.
Improved Catalysts for the Iridium‐Catalyzed Asymmetric Isomerization of Primary Allylic Alcohols Based on Charton Analysis
Authors: Mantilli Luca , Gérard David , Torche Sonya , Besnard Céline , Mazet Clément
Published: September 2010

An improved generation of chiral cationic iridium catalysts for the asymmetric isomerization of primary allylic alcohols is disclosed. The design of these air‐stable complexes relied on the preliminary mechanistic information available, and on Charton analyses using two preceding generations of iridium catalysts developed for this highly challenging transformation. Sterically unbiased chiral aldehydes that were not accessible previously have been obtained with high levels of enantioselectivity, thus validating the initial hypothesis regarding the selected ligand‐design elements. A rationale for the high enantioselectivities achieved in most cases is also presented.
Atomic‐Level Elucidation of the Initial Stages of Self‐Assembled Monolayer Metallization and Nanoparticle Formation
Authors: Keith John A. , Jacob Timo
Published: September 2010

The development of high‐performance molecular electronics and nanotech applications requires deep understanding of atomic level structural, electronic, and magnetic properties of electrode/molecular interfaces. Recent electrochemical experiments on self‐assembled monolayers (SAMs) have identified highly practical means to generate nanoparticles and metal monolayers suspended above substrate surfaces through SAM metallizations. A rational basis why this process is even possible is not yet well‐understood. To clarify the initial stages of interface formation during SAM metallization, we used first‐principles spin‐polarized density functional theory (DFT) calculations to study Pd diffusion on top of 4‐mercaptopyridine (4MP) SAMs on Au(111). After distinguishing potential‐energy surfaces (PESs) for different spin configurations for transition metal atoms on the SAM, we find adatom diffusion is not possible over the clean 4MP–SAM surface. Pre‐adsorption of transition‐metal atoms, however, facilitates atomic diffusion that appears to explain multiple reports on experimentally observed island and monolayer formation on top of SAMs. Furthermore, these diffusions most likely occur by moving across low‐lying and intersecting PESs of different spin states, opening the possibility of magnetic control over these systems. Vertical diffusion processes were also investigated, and the electrolyte was found to play a key role in preventing metal permeation through the SAM to the substrate.
ChemInform Abstract: Ab initio Calculation of Inner‐Sphere Reorganization Energies of Inorganic Redox Couples.
Authors: EBERSON L. , GONZALEZ‐LUQUE R. , LORENTZON J. , MERCHAN M. , ROOS B. O.
Published: September 2010

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Ab initio Study on the Structure of Dinitrogen Tetroxide: Is There a D2d Conformer?
Authors: LIU R. , ZHOU X.
Published: September 2010

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Theoretical Prediction of a Polycyclic Modification of Polythiazyl. A New Molecular Superconductor?
Authors: JONES W. H. , BARDO R. D.
Published: September 2010

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Monomeric YCl3 ‐ Planar or Pyramidal?
Authors: MARSDEN C. J. , SMART B. A.
Published: September 2010

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Two Families of Centered Zirconium Cluster Phases with M1,2M′Cl6× Zr6Cl12Z Compositions.
Authors: ZHANG J. , CORBETT J. D.
Published: September 2010

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Dy10.14Mn12.86C18, Yb10.09Mn12.91C18 and Other Rare Earth Manganese Carbides with a Structure Derived from that of α‐Mn.
Authors: KAHNERT G. E. , JEITSCHKO W.
Published: September 2010

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Complex Formation in Pyrosulfate Melts. Part 4. Density, Potentiometry, Calorimetry, and Conductivity of the Systems Cs2S2O7‐V2O5, Cs2S2O7‐ Cs2SO4, and Cs2S2O7‐Cs2SO4‐V2O5 in the Temperature Range 340‐550 . degree.C.
Authors: FOLKMANN G. E. , HATEM G. , FEHRMANN R. , GAUNE‐ESCARD M. , BJERRUM N. J.
Published: September 2010

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Catalytic Activity and Structural Analysis of Polymer‐Protected Au/Pd Bimetallic Clusters Prepared by the Successive Reduction of HAuCl4 and PdCl2.
Authors: HARADA M. , ASAKURA K. , TOSHIMA N.
Published: September 2010

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Sol‐Gel Ru/SiO2‐Catalysts: Theoretical and Experimental Determination of the Ru‐in‐Silica Structures.
Authors: LOPEZ T. , GOMEZ R. , NOVARO O. , RAMIREZ‐SOLIS A. , SANCHEZ‐MORA E. , CASTILLO S. , POULAIN E. , MARTINEZ‐MAGADAN J. M.
Published: September 2010

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Isomorphous Substitution and the Generation of Catalytic Activity in VPI‐5.
Authors: KRAUSHAAR‐CZARNETZKI B. , DOGTEROM R. J. , STORK W. H. J. , EMEIS K. A. , VAN BRAAM HOUCKGEEST J. P.
Published: September 2010

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Identification of New Hydrogen Species Adsorbed on Ruthenium Sulfide by Neutron Spectroscopy.
Authors: JOBIC H. , CLUGNET G. , LACROIX M. , YUAN S. , MIRODATOS C. , BREYSSE M.
Published: September 2010

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Oxides of Nitrogen. Their Formation, Transformation, and the Possibilities of Capture.
Authors: MOCEK K. , STEJSKALOVA K.
Published: September 2010

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Phosphorus(V) Nitrides: Preparation, Properties, and Possible Applications of New Solid State Materials with Structural Analogies to Phosphates and Silicates.
Authors: SCHNICK W.
Published: September 2010

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: A New Class of Phosphate Compounds: Introduction of Nitrogen in the Tetrahedral Phosphorus Environment
Authors: MARCHAND R. , CONANEC R. , GUEGUEN E. , LAURENT Y.
Published: September 2010

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.