bluuebunny/crossref_metadata_2025_split huggingface dataset:
Bildung von Amidophosphaten und Amidophosphorsäure aus N-Methylcarbamoylphosphaten / Formation of Amidophosphates and Amidophosphoric Acid from N-Methylcarbamoyl Phosphates
Authors: Seel Fritz , Klein N. 
Published: February 2015

Abstract
The synthesis of various amidophosphates can be readily accomplished in aqueous solutions by the reaction of amines with solutions of sodium, potassium or ammonium N-methylcarbamoyl phosphate, prepared by the reaction of methylisocyanate with the corresponding hydrogen phosphates. Procedures for the synthesis of NH4[O3PNH3] and Ca[O3PNH2CH3]2 · 4 H2O are described in detail.
Synthese und Struktur von N2S3Cl+SbCI6 - / Synthesis and Structure of N2S3Cl+ SbCl6-
Authors: Isenberg Wilhelm , Homsy Nayla K. , Anhaus Jens , Roesky Herbert W. , Sheldrick George M. 
Published: February 2015

Abstract
N2S3Cl+ SbCl6- was prepared by chlorination of N4S4 · SbCls5 with elemental chlorine. The crystals are monoclinic, P21/c, with a = 1492.4(4), b = 1233.6(2), c = 1437.5(4) pm, β = 91.40(2)°, and R = 0.059 for 3663 observed reflections. There are two independent cations and anions in the asymmetric symmetric unit. The appreciable interionic interaction results in a high density of ρ = 2.642 g · cm -3 (calcd).
Thermoanalytische, IR-spektroskopische und quantenchemische Untersuchungen an Kristallmodifikationen des Trichlorphons / Thermo-analytical, IR-spectroscopical and Quantum-chemical Investigations on Crystal Modifications of Trichlorphone
Authors: Sohr Hans , Hanschmann Günter , Utschik Hermann 
Published: February 2015

Abstract
Several modifications of trichlorphone can be prepared by recrystallizing the raw substance from various solvents under special conditions. One of these modifications is obviously an optical isomer. The different thermo-analytical behavior of the modifications is probably due to the relative content of distinct dimer species. This interpretation is supported by quantum-chemical calculations and by analysis of infrared spectra.
Coordinative Interactions in Chelated Complexes of Silicon, Part III Crystal and Molecular Structure of 1-Trichlorosilyl-1,2,3,4-tetrahydro-1,10-phenanthroline
Authors: Klebe Gerhard , Bats Jan W. , Hensen Karl 
Published: February 2015

Abstract
The crystal structure of C12H11N2SiCl3 (monoclinic, P21/m, Z = 2, with a: 9.284(4), b: 7.226(2), c: 10.832(5) Å, β = 115.14(3)°) was refined to R(F) =0.035 from 1228 independent reflections. A trigonal bipyramidal, pentacoordinate silicon is observed. The chelated complex shows two different Si−N bonds, a coordinative bond (1.984(2) Å) between Si and N on the axial position and a Si−N single bond (1.737(3) A, equatorial plane), introduced by chemical reaction. The coordinative bond is 14.2% longer than the Si−N single bond. The lengthening of the coordinative bond in the present case is compared with distances in other extracoordinated silicon compounds.
Reaktionen des Hexaphenylcarbodiphosphorans, IV [1] Reaktionen des Hexaphenylcarbodiphosphorans mit Halogenverbindungen. Diphosphaallylkationen / Reactions of Hexaphenylcarbodiphosphorane, IV [1] Reactions of Hexaphenylcarbodiphosphorane with Halogen Compounds. Diphosphaallyl Cations
Authors: Bestmann Hans Jürgen , Oechsner Helmut 
Published: February 2015

Abstract
Hexaphenylcarbodiphosphorane (1) undergoes nucleophilic displacement reaction with halogen compounds 3 with formation of compounds 5 which can be regarded as salts of the diphosphaallylcation. 1 reacts with bromoacetic ester 11 as base, with proton abstraction and formation of a carbanion 12 which gives rise to formation of (E)-cyclopropan-tricarboxylicacid ester (13). In an analogous way, 1 attacks isothiocyanatoaceticacid ester (14) with formation of an ionpair 15 which undergoes a cycloaddition with a second molecule 14 forming 16, which can be converted into the mercaptothiazol derivative 17 by treatment with HCl.
In the Search for New Anticancer Drugs, III+ Phosphorylated Diaziridine Derivatives
Authors: Sosnovsky George , Lukszo Jan 
Published: February 2015

Abstract
Several N-diethoxyphosphoryl derivatives 7 of various diaziridines, and compounds 12, 15a, 15b, 18 and 20, structurally related to TEPA (1a) and spin labeled Thio-TEPA (1c) were synthesized.
Die Kristallstrukturell von CaHg(SCN)4 · nH2O (n = 2,3). Verwandtschaftsbeziehungen zwischen den Verbindungsklassen der Tetrathiocyanatomercurate(II) von Erdalkaliionen und 3d-Metallionen / The Crystal Structures of CaHg(SCN)4 · nH2O (n = 2, 3). Relations between Tetrathiocyanatomercurates(II) of the Alkaline-Earth-Ions and Ions of the 3d-Type
Authors: Brodersen Klaus , Hummel Hans-U. 
Published: February 2015

CaHg(SCN)4 · nH2O (n = 2(1), n = 3(2)) were isolated from an aqueous solution of Ca(NCS)2 · 4H2O and Hg(SCN)2· 1 is compared with the analogous MgHg(SCN)4 · 2H2O by means of powder patterns. The crystal structure of 2 has been determined. 2 is monoclinic, space group P21/c with a =9.469(4), b = 22.781(5), c = 6.587(4) Å, β = 93.6(3)°, Z = 4, dc = 2.46 g · cm-3.
The structure was refined to R = 7.42 and Rw = 4.96% for 1224 independent reflec­tions.
The species MHg(SCN)4 · 2H2O (M = Mg, Ca, Ni) contain nearly tetrahedral Hg(SCN)4 and octahedral M(OH2)2(NCS)4 groups which are joined by Hg-SCN-M bridges.
In contrast the structures of the other compounds MHg(SCN)4 · nH2O (M = Co, n = 0; M = Ca, Sr, n = 3) are based on the diamond net. There is tetrahedral coordination of all the metal atoms, M having 4 N and Hg 4 S nearest neighbours. In the hydrates the H2O molecules are situated additionally at the Ca and Sr atoms [*].
AB2X2 -Verbindungen mit CaAl2Si2-Struktur, IX [1] / AB2X2 Compounds with the CaAl2Si2 Structure, IX [1]
Authors: Mahan Ali , Mewis Albrecht 
Published: February 2015

Abstract
The compounds ZrCu2P2, YZnCuP2, LaZnCuP2, and CeZnCuP2 have been prepared and their structures have been determined. They are isotypic and crystallize trigonally in the CaAl2Si2-type structure (space group P3̄̄m 1) with the lattice constants:
ZrCu2P2 a = 381,2(1) pm, c = 617,1(2) pm,
YZnCuP2 a = 398,3(1) pm, c = 652,3(2) pm,
LaZnCuP2 a = 408,2(1) pm, c = 674,2(2) pm,
CeZnCuP2 a = 406,4(1) pm, c = 669,7(2) pm.
The compounds ALiCu2P(A=Y, Ce, Sm, Tb, Yb) crystalizze trigonally, too, in a very similar structure with the following lattice constants:
YLiCuP2 a = 398,5(1) pm, c = 657,0(2) pm,
CeLiCu2P2 a = 404,2 (1) pm, c = 671,8 (2) pm,
SmLiCu2P2 a=401,4 (1) pm, c = 663,4 (2) pm,
TbLiCu2P2 a = 399,4 (1) pm, c = 656,3 (2) pm,
YbLiCu2P2 a = 396,0 (1) pm, c = 648,4 (2) pm.
Oxidative Addition of Pseudohalogen to [P(OPh)3]4Ni
Authors: Bobadilla M. , Morán M. 
Published: February 2015

Abstract
The title compound reacts with cyanogen halides, XCN (X = Br or I) to give the complexes L2(X)(CN)Ni (L = P(OPh)3, X = Br or I). The oxidative addition of (SCN)2 and (SeCN)2 to the same compound results in the formation of L2Ni(XCN)2 (X = S or Se).
All the complexes have been characterized by elemental analysis, and IR, 1H NMR and electronic spectra.
The Molecular Structure of Selenium Dichloride, SeCl2, Determined by Gas Electron Diffraction
Authors: Fernholt Liv , Haaland Arne , Seip Ragnhild , Kniep Rüdiger , Korte Lutz 
Published: February 2015

Abstract
The electron diffraction pattern of the vapor from a sample of SeCl4 has been recorded with a reservoir and nozzle temperature of about 175 °C. The gas jet was found to consist of SeCl2 (80%) and Cl2 (20%). The bond distance in SeCl2 is ra(Se-Cl) = 2.157(3) Å, the valence angle <ClSeCl = 99.6(5)°.
Metallkomplexe mit biologisch wichtigen Liganden, XXVII [1] Palladium(II)-und Platin(II)-Komplexe mit Aminomonosacchariden / Metal Complexes with Biological Important Ligands, XXVII [1] Palladium(II) and Platinum(II) Complexes with Aminomonosaccharides
Authors: Thiel Gerhard , Beck Wolfgang 
Published: February 2015

Abstract
A series of dihalo palladium and platinum complexes X2PtL2 (X = Cl, I) with aminosugars L = 2-amino-2-deoxy-1,3,4,6-tetra-O-acetyl-β-D-glucopyranose, 1-O-methyl-2-amino-2-deoxy-4,6-O-benzyliden-a,β-D-glucopyranoside, 1-O-methyl-2-amino-2-deoxya-α,β-D-glucopyranoside, 6-amino-6-deoxy-1,2:3,4-di -O-isopropyliden-a-D-galactopyranose has been prepared and characterized by their IR, 1H and 13C NMR spectra. Monosaccharides and aminomonosaccharides have been attached to the complex via the carboxy group of α-amino acid PtII complexes to give esters or amides with the monosaccharides as the alcohol or amine components, respectively.
Azaborolinyl-Komplexe, XII [1] Gemischte η4 -1.2-Azaborolin-η5-cyclopentadienyl- und η5-1.2-Azaborolinyl-η5-cyclopentadienyl-Cobalt-Sandwich-Komplexe / Azaborolinyl Complexes, XII [1] Mixed η4-1,2-Azaboroline-η5-cyclopentadienyl-, and η5 -1,2-Azaborolinyl-η5-cyclopentadienyl Cobalt Sandwich Complexes
Authors: Schmid Günter , Höhner Uwe , Kampmann Detlef 
Published: February 2015

Abstract
Neutral 1-tert-butyl-2-methyl-Δ3-1,2-azaboroline and 2-methyl-1-trimethylsilyl-Δ3-1,2- azaboroline act as 4π electron donors in the mixed sandwich complexes 1-tert-butyl-2-methyl-η4-1,2-azaboroline-η5-cyclopentadienyl cobalt (1) and 2-methyl-1-trimethylsilyl-η4-1,2-azaboroline-η5-cyclopentadienyl cobalt (2), respectively. They are formed by the reaction of (C5H5)Co(C2H4)2 with the free ligands without any solvent and are isolated as green oily liquids. 1 and 2 can be transformed into mixed sandwich complexes with η5-1,2- azaborolinyl ring ligands by loss of a hydrogen atom of the CH2 group. This occurs at room temperature to give 1-tert-butyl-2-methyl-η5-1,2-azaborolinyl-η5-cyclopentadienyl cobalt (3) and 2-methyl-1-trimethylsilyl-η5-1,2-azaborolmyl-η5-cyclopentadienyl cobalt (4) in low yields. Mass, 1H, and 11B NMR spectra are discussed.
An Energy Rich Phosphate from 2 -Methylimidazole through Nonenzymatic Photophosphorylation * ‘ * * *
Authors: Saygin Omer , Decker Peter 
Published: February 2015

Abstract
Sensitized photooxidation of imidazoles in aqueous solution and in the presence of inorganic phosphate afforded organic phosphates with yields up to 30%. The major phosphorylated product of oxidation of 2-methylimidazole was isolated and identified as the monophosphate of 4,5-dihydroxy-2-methylimidazoline with pKa values of 2.0, 5.2, and 9.8. The compound is energy rich in aqueous solution and hydrolyses in alkaline or neutral solutions irreversibly (ΔHhyd = -9.8 kcal/mole). For the hydrolysis at pH 7 an activation-enthalpy of 25 kcal/mole and -entropy of 8 cal/deg.mole was observed. Be2+ ions catalyse the hydrolysis.
Olefin-, Aromaten-und Allylkomplexe des Vanadiums aus Vanadocen [1] / Olefine, Arene, and Allyl Complexes of Vanadium from Vanadocene [1]
Authors: Jonas Klaus , Wiskamp Volker 
Published: February 2015

Abstract
Vanadocene (Cp2V) was reduced with potassium metal in tetrahydrofuran (THF) to give a 1:1 adduct K[Cp2V] which has been isolated as [K(THF)(Et2O)][Cp2V]. The reactions of this compound with various molecules (L) capable of functioning as ligands were investigated. They cause the liberation of KCp and the formation of several new organovanadium compounds. The products of these reactions were: [K(THF)2.5][CpVC8H12] for L = butadiene (C4H6), [K(THF)1.5][CpVC6H5P(C6H5)2] for L = P(C6H5)3, CpV(C4H6)P(CH3)3 for L = mixture of C4H6 and P(CH3)3. Vanadocene was reacted with allyllithium to yield LiCp and [LiTMEDA][CpV(C3H5)2] (TMEDA = (CH3)2NCH2CH2N(CH3)2), which was transformed via allylbromide to CpV(C3H5)2. Structures and reactivities of these new organovanadium complexes are discussed.
Theoretical Study of the Orientation Dependence of Charge-Transfer Excitations in Quinhydrones
Authors: Vogler Helmut 
Published: February 2015

Abstract
The two longest wavelength electronic transitions of the quinhydrones 1 and the dependence of transition energies and intensities on the mutual orientation of hydro-quinone and p-benzoquinone is studied within semiempirical π-theory. The results are in good agreement with the experimental UV-VIS spectra of closely related cyclophane-quinhydrones. The study is extended to the yet unknown quadruple-layered systems 2 which consist of two quinhydrone moieties.
Übergangsmetallketen -Verbindungen, XVII [1]Darstellung eines anionischen η2 -Ketenylkomplexes / Compounds of Transition Metal Ketenes, XVII [1]Synthesis of an Anionic η2 -Ketenyl Complex
Authors: Sieber Werner J. , Eberl Karl , Wolfgruber Mathias , Kreißl Fritz R. 
Published: February 2015

Abstract
The η2-ketenyl compound

reacts with tetrabutylammonium cyanide forming an anionic η2 -ketenyl complex.
Chemie polyfunktioneller Moleküle, 74 [1]. Synthese, Umlagerung und Eigenschaften diphenylphosphinosubstituierter Uracile / Chemistry of Polyfunctional Molecules, 74 [1]. Synthesis, Rearrangement and Properties of Diphenylphosphino Substituted Uracils
Authors: Ellermann Jochen , Demuth Alfons A. M. 
Published: February 2015

Abstract
5-Bromo-uracil (2) with chloro-diphenylphosphine and triethylamine gives 5-bromo-N(1),N(3)-bis(diphenylphosphino)-uracil (3). In moist acetone, 3 is hydrolyzed to 5-bromo-N(1)-diphenylphosphino-uracil (4). 3 reacts with n-butyllithium under rearrangement and, with HCl, under elimination of a PPh2-group, forms C(5)-diphenylphosphino-uracil (7a). Recrystallization of 7 a from ethanol yields the ethanol-1:1-adduct 7b. Heating of 7a in dimethylsulfoxide with D2O yields the N(1),N(3)-dideutero-C(5)-diphenylphosphino-uracil (7c). All compounds were characterized by infrared, Raman, 1H, 31P NMR and mass spectra. 7a shows a very small antitumor activity.
Scalar Second-Kind Relaxation of 27Al, 69Ga and 71Ga Nuclei in Aluminium and Gallium Complexes
Authors: Tarasov V. P. , Privalov V. I. , Kirakosyan G. A. , Buslaev Yu. A. 
Published: February 2015

Abstract
Spin-spin and spin-lattice relaxation times of nuclei 69,71Ga, 27Al, 14N in anions [MClnBr4-n]-and the solvate complexes [M(CH3CN)6]3+, produced from dissolution of MCl3 and MBr3 in the mixture CH3CN + CH3NO2 (M = Ga, Al), are measured in the temperature range from -40 up to + 70 °C. It is shown that nuclear spins of 69,71Ga, 27Al relax in the anionic and cationic complexes by means of the second-kind scalar and quadrupole relaxation mechanisms (due to the relaxation of the nuclei 35,37Cl, 79,81Br, 14N). The complexes [MClnBr4-n]-and [M(CH3CN)6]3+ in the investigated solutions are inert and do not undergo exchange processes in the NMR time scale. The scalar spin coupling constants in [M(CH3CN)6]3+ are determined from the scalar contribution to the relaxation rate of 69,71Ga, 27Al, and the measured relaxation time of 14N in the solvate complex; the results are J(69Ga-14N) = 59 ± 5 Hz, J(71Ga-14N) = 74 ± 6Hz, J(27Al-14N) = 22 ± 2Hz.
Die elektrochemische Reduktion von Benzylidenmalonitrilen / The Electrochemical Reduction of Benzylidenemalononitriles
Authors: Abou-Elenien G. , Buecher B. , Ismail N. , Rieser J. , Wallenfels K. 
Published: February 2015

Abstract
The influence of different substituents on the electrochemical reduction of benzylidene-malononitriles in benzonitrile at platinium electrodes has been investigated using DC-voltametry, cycl. voltametry and coulometry.
γ-Radiolysis of 2′-Deoxycytidine-5′-phosphate in Deoxygenated Aqueous Solutions. OH Radical-Induced Alterations at the Sugar Moiety
Authors: Schuchmann Heinz-Peter , Wagner Rita , Sonntag Clemens von 
Published: February 2015

Abstract
In order to elucidate some aspects of the mechanism of radical-induced strand break formation in DNA, the γ-radiolysis of N2O-saturated aqueous solutions of 2′-deoxycytidine-5′-phosphate has been studied as a model system. At pH 4 it has been observed that upon OH attack at the sugar moiety phosphate (G ≈ 0.6) and cytosine (G = 1) are released and the following cytosine-free sugars are formed: 2,5-dideoxypentos-3,4-diulose, 1 (G = O.22), 2-deoxy-pentos-4-ulose, 2 (G = 0.18), 2-deoxy-pentos-4-ulose-5-phosphate, 3 (G=0.06), 2-deoxypentonic acid-5-phosphate and its lactone, 5 (G ≈ 0.5). Some 2-deoxyribose-5-phosphate, 4 is also formed.
Upon addition of H2O2 (up to 10-2 M) prior to irradiation, G(1) is drastically reduced without giving rise to another cytosine-free product. G(3) increases at the expense of G(2). G (4 + 5) also increase upon H2O2 addition. The formation of these products and the change of their G values as a function of H2O2 concentration are discussed in the light of well-documented radical reactions of carbohydrates and related compounds.
The precursor of 1 has been considered to be the radical at C-3′, that of 2 and 3 the radical at C-4′ and that of 5 the radical at C-1′. Product 4 is thought to arise from a radical-induced destruction of the cytosine moiety. These primary radicals which may undergo rearrangement, or eliminate phosphate, are readily oxidised by H2O2, a reaction which leads to the change of product distribution mentioned above.
Von Braun (BrCN) Reaction on Solasodine
Authors: Siddiqui Salimuzzaman , Siddiqui Bina S. , Faizi Shaheen 
Published: February 2015

Abstract
Solasodine on reaction with BrCN yielded two isomeric cyanamides in a ratio of 3:1, which have been characterised as C-22 configurational isomers, N-cyanosolasodine (22 R, 25 R) IIA and N-cyanosolasodine (22 S, 25 R) II B on the basis of 1H and 13C NMR studies. The same reaction with piperidine, yielded its cyanamide, the 13C NMR of which is also reported.
Derivate des 1.3-Benzdioxols, 50 [1]. Darstellung von 6.7-Dihydroxychromanmethylenethern / Derivatives of 1,3-Benzodioxoles, 50 [1] Preparation of 6,7-Dihydroxy-chromanes Fused to Cyclic Diethers
Authors: Dallacker Franz , Coerver Wim 
Published: February 2015

We describe the preparation of alkylsubst. benzodioxoles, -dioxane, -dioxepine and dioxocine 2a-e.
The can be subjected to a Vilsmeyer-formylation, yielding the aldehydes 3 a-e.
Treatment of 3 a-e with performic acid leads to the phenoles 4 a-e in a Baeyer-Villiger-Oxidation. Using Zincchloride as a catalyst the chromanes 5 a-j can be obtained by reaction of 4 a-e with either prenylbromide or phthylbromide.
Synthesis and Antiovulatory Activities in Rats of Analogs of the Luteinizing Hormone Releasing Hormone Having a Moiety of /?-(3-Quinolyl)-D-a-alanine in Positions 3 and 6
Authors: Folkers Karl , Bowers Cyril Y. , Kubiak Teresa , Stepinski Janusz 
Published: February 2015

Abstract
Analogs of the luteinizing hormone releasing hormone (LHRH) having a moiety (D-Qal-) of β-(3-quinolyl)-D-α-alanine were synthesized toward more effective inhibitors of ovulation. [N-Ac-pCl-D-Phe1,2, D-3-Pal3, D-3-Qal6, D-Ala10]-LHRH was the most effective, and had an antiovulatory activity of 40% at 1 μg/rat. D-3-Qal6 was as effective as D-Trp6 in combination with N-Ac-3⊿Pro1, pF-D-Phe2, D-Trp3. D-Arg6 was superior to D-3-Qal6) in combination with N-Ac-pCl-D-Phe1,2, D-Trp3 (or D-3-Pal3), D-Ala10. The introduction of D-3-Qal3, D-His3 and D-Arg3 in comparable analogs caused substantial loss of activities.
Mechanismus der autokatalytischen Primärreaktion bei der Formose-Reaktion / Mechanism of the Autocatalytic Primary Reaction Step in the Formose Reaction
Authors: Harsch Günther , Harsch Monika , Voelter Wolfgang 
Published: February 2015

Abstract
New insights into the autocatalytic primary reaction step of the formose reaction are obtained by using soluble calcium hydroxide bismethylene glycolate complexes for kinetic investigations in homogeneous phase. The reaction kinetics follows between 20% and 80% formaldehyde consumption a nonlinear rate equation. Specific co-catalytic activities are determined for the most important intermediates and end products of the formose reaction. By correlation of the kinetic results with solubility experiments, ultraviolet, 13C NMR spectroscopic measurements and rates of oxidation and acid formation, a mechanism for the autocatalytic primary reaction is given. The main catalytic effects for the formaldehyde activation are caused by calcium enediolate complexes in an autocatalytic cycle and competition with the Cannizzaro and oligomerisation reaction. Further, but less probable mechanisms are also discussed.
Produktverteilung und Mechanismus der Gesamtreaktion der Formose-Reaktion / Product Analysis and Mechanism of the Formose Reaction
Authors: Harsch Günther , Harsch Monika , Bauer Hermann , Voelter Wolfgang 
Published: February 2015

Abstract
By means of liquid chromatographic analysis, UV, 13C NMR and GC-MS spectroscopy it is possible to determine quantitatively the most important intermediate and final products of the formose reaction. As stable main products xylose, glucose and dendroketose, as stable side products ribose, lyxose, arabinose, mannose, dendroaldose, fructose and sorbose are identified. Instable intermediates are glycolaldehyde, glycerolaldehyde, dihydroxiacetone, erythrose, threose and pentuloses. Cannizzaro reaction, oligomerization and the primary formose reaction are catalyzed by a calcium hydroxide bismethylene glycolate complex.
Notizen: Oxidation of Tetraline by Dioxygen. Effect of Fe(acac)3 on the Thermal and Photoinitiated Reactions
Authors: Luňák Stanislav , Vašková Marie , Vepřek-Šiška Josef 
Published: February 2015

Abstract
The photochemical oxidation of tetraline by dioxygen is catalyzed by ferric acetylacetonate (iron(III) 2,4-pentadionate), the reaction rate increasing markedly with temperature. The rate-determining step of the photochemical oxidation is presumably a catalyzed thermal reaction.
Notizen: p-Tolytelluro-dimethylstiban - ein Molekül mit Tellur-Antimon-Bindung / p-Tolytelluro-dimethylstibane. A Molecule with the Tellurium-Antimony-Bond
Authors: Mont Wolf-Walther du , Severengiz Tevfik , Breunig Hans Joachim 
Published: February 2015

Abstract
Tetramethyldistibane reacts with equimolar amounts of di-p-tolylditelluride to yield quantitatively p-tolyltellurodimethylstibane, the first molecule with a Te-Sb bond. The compound has been characterised by elemental analysis and by NMR and mass spectra.
Asymmetrische Katalysen, 13 [1]. Chelat-Liganden und ihre Rhodium-Komplexe mit seitlichen Asymmetriezentren und ihre Anwendung in der enantioselektiven Katalyse / Asymmetric Catalyses. 13 [1]. Chelate Ligands and their Rhodium Complexes with Lateral Asymmetrie Centers and their Use in Enantioselective Catalysis
Authors: Brunner Henri , Rahman A. F. M. Mokhlesur 
Published: February 2015

Abstract
The chelate ligands 1-3 with lateral asymmetric centers at the nitrogen atoms were prepared and characterized. In the Rh complexes 4 and 5 the asymmetric centers directly interact with those coordination positions where during enantioselective catalysis pro-chiral substrates are converted into optically active products.
The compounds 4 and 5, as well as the in situ catalysts [Rh(COD)Cl]2/2 were used in the asymmetric hydrogenation of α-N[acetamino]cinnamic acid and in the asymmetric hydrosilylation of acetophenone with diphenylsilane. The low optical inductions obtained result from the catalyst loosing its chiral information during catalysis due to racemization or fragmentation.
Metallkomplexe mit Tetrapyrrol-Liganden, XXXI [1]. Neutrale und anionoide Bisporphinate des Gers und Praseodyms / Metal Complexes with Tetrapyrrole Ligands, XXXI [1]. Neutral and Anionoid Bisporphinates of Cerium and Praeseodymium
Authors: Buchler Johann W. , Kapellmann Heinz-Günter , Knoff Martina , Lay Kiong-Lam , Pfeifer Stefan 
Published: February 2015

Abstract
The preparation of the lanthanoid bisporphinates, bis[meso-tetra(p-tolyl)porphinato]-cerium(IV) [Ce(TTP)2**] and bis[meso-tetra(p-tolyl)porphinato]hydrogenpraseodymium-(III) [PrH(TTP)2] from Ce(acac)3 and Pr(acac)3 in boiling 1,2,4-trichlorobenzene is described. Ce(TTP)2 is a diamagnetic and rather inert CeIV derivative, PrH(TTP)2 is a paramagnetic PrIII complex and may be deprotonated to give the anion [Pr(TTP)2]- which is characterized by conductivity measurements, electrophoresis, and isolation of its tetra(n-butyl)ammonium or tetraphenylarsonium salt. The compounds are identified by UV/VIS, IR, 1H NMR, and mass spectra. The data are consistent with a sandwich-type square antiprismatic array of the two porphinate disks about the CeIV or PrIII ion as found earlier in the bis-phthalocyaninates U(Pc)2 or NdH(Pc)2.