bluuebunny/crossref_metadata_2025_split huggingface dataset:
Potentiometric Determination of Stability Constants of Trivalent Metal Ion Complexes with Di-p-tolyl-thiovioluric Acid
Authors: Mathur Pavan , Goel D. P. , Singh R. P. 
Published: March 2015

The consecutive formation constants of 1:1, 2:1, 3:1 chelate species formed by the interaction of di-p-tolyl-thiovioluric acid (D-p-TOTVA) with the tripositive lanthanons and yttrium cations were determined potentiometrically at 0.1 µ (NaClO4) at 30± 1°C, in 75% aqueous dioxan.
The 1:1 formation constants (log K1) for the complexes increase with the increase in the atomic number of the lanthanon (3), with a break at gadolinium.
The results indicate that the ligand bonds bidentately to heavier lanthanons (smaller ionic radii). However, definite dentate character of bonding to lighter (larger ionic radii) lanthanons could not be established.
Photoelektronenspektroskopie an den Alkalimetallen Rb und Cs und deren metallreichen Oxiden / Photoelectron Spectroscopy of the Alkali Metals Rb and Cs and their Metal Rich Oxides
Authors: Ebbinghaus G. , Braun W. , Simon A. 
Published: March 2015

The alkali metals Rb and Cs and their suboxides Cs11O3, Cs7O (≙ [Cs11O3]Cs10) and [Cs11O3]Rb7 have been investigated by UPS (HeI).
Extremely narrow O2p levels are observed, as well as significant differences in the binding energies of the 5p levels of chemically different Cs-atoms. From energy loss structures (surface plasmons) electron concentrations are determined.
The results are discussed in terms of structurally derived bonding models. The alkali metal suboxides are of importance in IR-sensitive Ag/Cs/O-photocathodes.
Neue intermetallische Verbindungen im anti-Ce2O2S-Strukturtyp. / New Intermetallic Compounds in the anti-Ce2O2S-Structure Type
Authors: Cordier Gerhard , Schäfer Herbert 
Published: March 2015

The new intermetallic compounds CaMn2Sb2, SrMn2Sb2 and CaMn2Bi2 have been prepared and structurally characterized. They are isotypic and crystallize trigonal in the anti-Ce2O2S-structure with the lattice constants:
CaMn2Sb2: a = 4.54(1), c = 7.48(1), c/a = 1.65.
SrMn2Sb2: a = 4.56(1), c = 7.70(1), c/a = 1.69.
CaMn2Bi2: a = 4.63(1), c = 7.64(1), c/a = 1.65.
Notizen: Elektrovalente temarnäre Phasen des Natriums bzw. Kaliums mit 2 B- und 5 B-Elementen / Ternary Phases of Sodium or Potassium with Elements of the 2 b- and 5 b-Group
Authors: Kahlert Holger , Schuster Hans-Uwe 
Published: March 2015

In the systems Na(K)-Zn(Cd)-As(Sb) we found the following phases: NaZnAs, NaZnSb,
KCdAs, KCdSb (tetragonal symmetry);
KZnAs, KZnSb (hexagonal symmetry);
NaCdAs, NaCdSb (orthorhombic symmetry)
Darstellung und Kristallstruktur von Ca3Al2Ge2, Sr3Al2Ge2 und Ba3Al2Ge2 / Preparation and Crystal Structure of Ca3Al2Ge2, Sr3Al2Ge2 and Ba3Αl2Ge2
Authors: Widera Axel , Eisenmann Brigitte , Schäfer Herbert , Turban Karlheinz 
Published: March 2015

Ca3Al2Ge2, Sr3Al2Ge2 and Ba3Al2Ge2 have been prepared and their structures determined. They crystallize orthorhombicly in an ordered variant of the Ta3B4 structure type with the following constants :
Ca3Al2Ge2: a = 4.08(1) Å, b = 18.54(2) Å, c = 4.58(1) A,
Sr3Al2Ge2: a = 4.22(1) Å, b = 19.21(2) Å, c = 4.86(1) A,
Ba3Al2Ge2: a = 4.34(1) A, b = 19.82(2) Å, c = 5.09(1) A.
Isomere und tautomere Formen substituierter 1.5-Diphenyl-3-phenylcarbamoylformazane / Isomeric and Tautomeric Forms of Substituted 1,5-Diphenyl-3-phenylcarbamoylformazanes
Authors: Kettrup Antonius , Grote Manfred 
Published: March 2015

The coupling of aryldiazonium salts to malonanilic acid gives formazanes with a phenylcarbamoyl group attached to the C-atom. One of these compounds has been 15N-labelled. IR and NMR spectroscopic investigations show that the formazanes exist in the solid state and in solution as mono- and bischelated isomers.
The influence of solvents on the rate of isomers and on the chemical shifts has been examined. Approximately linear relationships are given between the δ-values of NH-protons, parameters ET and Hammett σ-values.
Preparation and Properties of Some Mixed Amino-hydrazino-boranes
Authors: Christmas B. K. , Niedenzu K. 
Published: March 2015

The three compounds N-2-(1,3-dimethyl-1,3,2-diazaboracyclopentyl)-N′,N′-dimethylhydrazine, (-CH2-NCH3-)2B-NH-N(CH3)2,N,N-bis-2-(1,3-dimethyl-1,3,2-diazaboracyclopentyl) -N′,N′-dimethylhydrazine, [(-CH2-NCH3-)2B]2N-N(CH3)2, and N,N′-bis-2-(1,3-dimethyl-1,3,2-diazaboracyclopentyl)hydrazine,
(-CH2-NCH3-)2B-NH-NH-B (-NCH3-CH2-)2,
have been synthesized and characterized. The compounds can be viewed as mixed aminohydrazino-boranes; they exhibit relatively high chemical and thermal stability which appears to be due to the incorporation of the boron into the heterocyclic system.
Darstellung und Reaktionen des Tetramethylammonium-4.6-dimethyl-1.3.3.5.5-pentaoxo-1 λ63 λ65 λ62,4,6-perhydrotrithiatriazin-1-olats / Preparation and Reactions of Tetramethylammonium-4,6-dimethyl-1,3,3,5,5-pentaoxo-1 λ6, 3 λ6, 5 λ6,2,4,6-perhydrotrithiatriazin- 1 -olat
Authors: Wagner Diec-Lang , Wagner Hartmut , Glemser Oskar 
Published: March 2015

Reaction of 2,4,6-trimethyl-1,1,3,3,5,5-hexaoxo-1 λ6-,3 λ6-,5 λ6-,2,4,6-perhydrotrithiatriazin, (CH3NSO2)3 (2), with trimethylamin forms a tetramethylammonium salt
N(CH3)4⁺[(CH3NSO2)2(NSO2)]- (3).
From 3 a silver-salt can be obtained which reacts with ethyl-iodide to form a mixed alkylated covalent derivative of 2.
Vier- und fünfgliedrige Phosphorheterocyclen, XVIII [1.3.2.4]Diazadiphospheto[2.1-b : 4.3-b]bis[1.3.4.25λ]oxadiazaphosphole / Four- and Five-Membered Phosphorus Heterocycles, XVIII [1,3,2,4] Diazadiphospheto [2,1-b : 4,3-b′]bis[1,3,4,2λ5]oxadiazaphospholes
Authors: Schmidpeter Alfred , Luber Jörg , Criegern Thomas von 
Published: March 2015

The title compounds 3 a-g are obtained from acetyl- and benzoylhydrazine with PCl5, with methyl- and phenylchlorophosphoranes, and with phosphonic and thiophosphinic chlorides. The monomeric oxadiazaphosphole proposed as an intermediate has been trapped in one case by methyl isocyanate in a 2 + 2 cycloaddition.
Compounds 3 with Cl at P can undergo nucleophilic substitutions. HCl degrades 3 in a slow reaction after an initial addition to the intact tricyclic system.
Mössbauer-Spektroskopische Untersuchungen an der high/low spin Eisen(II)-Verbindung Cs2FeHFeL(CN)6 / Mössbauer Spectroscopic Investigation of the High/Low Spin Iron(II) Compound Cs2FeHFeL(CN)6
Authors: Griebler W. D. , Pebler J. , Schmidt K. , Babel D. 
Published: March 2015

Abstract
By Mössbauer spectroscopy the cubic compound CsFe(CN)3, α = 5.208 Å, is shown to contain high and low spin iron(II) in 1:1 proportion independant of temperature 4.2 ≦ T ≦ 600 K. This gives evidence of isomorphism with the elpasolite Cs2MgFe(CN)6. The quadrupol splitting of the high spin iron(II) spectra strongly depends on temperature and vanishes beyond 400 K. This behaviour is interpreted in terms of static Jahn Teller distortion in the low temperature range, also indicated by the splitting of the IR absorption associated with the Fe-N stretching frequency.
The data of Mössbauer and IR spectra, as well as of magnetic susceptibility measurements are given and discussed.
Verbesserte Synthesen von Vanadocenen und Chromocenen / Improved Syntheses of Vanadocenes and Chromocenes
Authors: Köhler Frank H. , Prössdorf Wolfram 
Published: March 2015

Abstract
In order to improve the poor yield of the vanadocene and chromocene syntheses VCl2 · 2 THF has been prepared by reduction of VCl3 · 3 THF with zinc and CrCl2 · THF by action of hydrogen chloride on chromium. The metal(II) chlorides have been reacted with sodium methylcyclopentadienide and perdeuterocyclopentadienide to give the corresponding vanadocenes and chromocenes in yields up to 68% and 85%, respectively. The products have been characterized by paramagnetic 13C, 1H, and 2H NMR the latter being newly introduced in the class of organometallic π-radicals.
Enhydrazine, XVIII Einige weitere Indazol-Derivate / Enhydrazines, XVIII1 Further Indazol Derivatives
Authors: Sucrow Wolfgang , Fehlauer Axel , Sandmann Udo 
Published: March 2015

Abstract
3-(3,4-Dimethoxyphenyl)-1-methyl-1,5,6,7-tetrahydro-4H-indazol-4-one (1) is reduced to 2 a. Dehydration of 2 a gives 3 which is hydrogenated to 4 or dehydrogenated to 5. Regiospecific bromination of 1 gives the bromoketones 6 or 7, the latter is transformed into the phenol 11 a or into the indazoloquinone 13 which is brominated to 14 and converted into the aminoquinone 15.
Über die Reaktionen von Na2[M2(CO)10] (M = Cr, Mo, W) mit InX3 (X = Cl, Br, I) und über die Kristall- und Molekülstruktur von Cr(CO)5InBr · THF / On the Reactions of Na2[M2(CO)10] (M = Cr, Mo, W) with InX3 (X = Cl, Br, I), and the Crystal and Molecular Structure of Cr(CO)5InBr · THF
Authors: Behrens Helmut , Moll Matthias , Sixtus Eduard , Thiele Gerhard 
Published: March 2015

The complexes (OC)5M-InX · THF are formed by the reactions of the disodium decacarbonyl dimetallates of VI b metals with InX3:
[xxx]
The structure of Cr(CO)5InBr · THF, which crystallizes in the space group Pbca-D15
2h has been determined by X-ray diffraction.
NaBeAs(Sb) – Ternäre Phasen im „aufgefüllten“ NiAs(Ni2In)-Typ / NaBeAs(Sb) – Ternary Phases in a „Filled“ NiAs(Ni2In)-Structure
Authors: Tiburtius Christoph , Schuster Hans-Uwe 
Published: March 2015

NaBeAs and NaBeSb crystallize in a modified Ni2In-type-structure, space group P 63/mmc–D6h
4. Preparation and structure determination with powder and single crystal data are described. The bonds and the structure are discussed in comparison with corresponding compounds of the formula AMeIIX. The lattice constants are:
NaBeAs: α = 3,820(5), c = 8,948(9), c/α = 2,34;
NaBeSb: α = 4,144(5), c = 9,320(9), c/α = 2,25.
Notizen: Zur Darstellung und Struktur von KSbSe2 / On the Preparation and Structure of KSbSe2
Authors: Dittmar Günter , Schäfer Herbert 
Published: March 2015

KSbSe2, prepared by heating a mixture of the elements in a silica tube, crystallizes triclinic with the following constants
a = 1248.1(5) pm, α = 103.16(5)°,
b = 644.5(5) pm, β = 99.27(5)°,
c = 645.0(5) pm, γ = 99.44(5)°.
There are SbSe2
--chains, formed by Ψ-tri-gonal bipyramids, which are connected by sharing edges.
Über Tetraphenylphosphonium-Isopolywolframate / Tetraphenylphosphonium-Isopolytungstates
Authors: Grase Roger , Fuchs Joachim 
Published: March 2015

From acidified sodium tungstate solutions mixtures of polytungstates are precipitated by addition of tetraphenylphosphonium ions. By separation with selective organic solvents five different polytungstates were obtained two of them represent a novel polyanion type. Their base to acid ratio is 2:11 respectively 1:6. The other three compounds were identified analytically and by their vibrational spectra as hexatungstate, [P(C6H5)4]2W6O19, as decatungstate, [P(C6H5)4]4Wio32, as well as dodecatungstate, [P(C6H5)4]5H3W12O40, with “Keggin-structure”.
The preparation of these compounds is reported and their IR, Raman and UV spectra are discussed.
Darstellung und Komplexverhalten von neuen Acrylsäurecopolymeren sowie deren Kopplung mit Insulin / Preparation and Complexation Behaviour of New Acrylic Acid Copolymers and their Coupling with Insulin
Authors: Biedermann Hans-G. , Eiband Manfred , Guntner Hans , Kolb Helmut 
Published: March 2015

Acrylic acid copolymers with styrene, acryloylchloride, acryloylpyrrolidinone, acryloyloxypyridine, acryloylsuccinimid and acryloyltriazole are prepared and coupled with insulin.
Metal complexes with BaCl2, Cu(CH3COO)2, La(NO3)2, Pb(NO3)2 and Hg(NO3)2 of the acrylic acid acryloylpyrrolidinone and of the acrylic acid acryloylsuccinimid copolymer are formed and characterized.
The Crystal Molecular Structure of the Adduct of 2,2,2-Trifluoro-4,4,5,5-tetrakis(trifluoromethyl)-l,3,2A 5 -dioxaphospholane with Trimethylphosphine. A Strong P → P Coordinate Bond
Authors: Sheldrick W. S. , Gibson J. A. , Röschenthaler G.-V. 
Published: March 2015

Abstract
The adduct of 2,2,2-trifluoro-4,4,5,5-tetrakis(trifluoromethyl)-1,3,2 A 5 -dioxaphospholane with trimethylphosphine crystallises in the orthorhombic space group Pbcm, Z = 4, with a - 11.018(2), b - 12.978(4), c= 11.607(2) Å at -120 °C. The perfluoropinacolyl ring system lies in a crystallographic plane of symmetry. This ring conformation and the very long endocyclic C-C bond and average C-CF3 distances of respectively 1.59(1) and 1.59(1) A are presumably a consequence of very short F···F steric contacts. The P→P bond distance of 2.234(5) is very short for a coordinate bond being only 0.01-0.03 A longer than that typically observed for a a-bond. The tr-bond lengths to the hexacoordinate phosphorus are influenced by the nature of the Zrans-bond in the octahedron.
Thermal Analysis of the Cadmium and Manganese Hydrogen Orthoarsenate Monohydrates (M HAsO4 · H2O, where M = Cd, Mn)
Authors: Nabar M. A. , Dalvi A. P. 
Published: March 2015

Abstract
The dehydration decomposition of cadmium and manganese hydrogen orthoarsenate monohydrates was studied by static isothermal and differential thermoanalytical methods. It was found that the dehydration decomposition takes place in a single stage forming the respective diarsenate, the peak minimum temperature being 458 K for the cadmium and 466 K for the manganese salt.
Metal(II) Complexes of 1,2,5-Oxadiazole
Authors: Driessen W. L. , Everstijn P. L. A. 
Published: March 2015

Abstract
A series of new coordination compounds is reported with 1,2,5-oxadiazole (ODZ) as the ligand, viz. [M(ODZ)3](SbCl6)2 with M = Mg(II), Mn(U), Fe(II), Co(II), Ni(II), and Zn(II). The metal ions are in a regular octahedral environment of six nitrogen atoms. The ligands function as bidentate bridges between the metal ions.
Montanin-D, a New Furanoid Diterpene of Clerodane Type from Teucrium montanum L.
Authors: Malakov Peter , Papanov Georgi , Mollov Nikola M. , Spassov Stefan L. 
Published: March 2015

Abstract
A new furanoid diterpene of clerodane type, Montanin-D [1], is isolated from the bitter fraction of the arial parts of Teucrium montanum L., spread in Bulgaria. Its structure is established on the basis of spectral evidance and chemical transformations.
Massenspektrometrische Untersuchungen zur Genese von [M—Me] [M-Et] [C7H7]+ und [C7H8]+ aus n-Butyl- und n-Pentylbenzol: Zeitabhängige Nachbargruppeneffekte, Isomerisierungen und kompetitive Wasserstoff-Umlagerungen / Mass Spectrometric Investigations on the Formation of [M-Me] [M-Et] [C7H7]+ und [C7H8]+ from w-Butyl and w-Pentyl Benzenes: Time Dependent Neighbouring Group Participation, Isomerization and Competitive Hydrogen Rearrangements
Authors: Wesdemiotis Chrysostomos , Schwarz Helmut , Borchers Friedrich , Heimbach Heinz , Levsen Karsten , Wesdemiotis Chrysostomos , Schwarz Helmut 
Published: March 2015

Abstract
The details of the elimination of CH3· and C2H5· from the molecular ions of n-butyl and n-pentyl benzenes as well as the formation of C7H7+ and C7H7+ -have been established using a combination of different mass spectrometric techniques. Among these techniques are field ionization kinetics (FIK), collisional activation (CA), unimolecular decomposi-tion of metastable ions (MI), kinetic energy release determinations (Tkin)> appearance potential measurements (AP) as well as high resolution mass spectrometry. The appli-cation of these methods and the investigation of nine 13 carbon and eleven deuterium labelled n-butyl and n-pentyl benzenes clearly demonstrate that 1) the loss of methyl and ethyl from terminal positions of the alkyl chains are accompanied by an interaction with the phenyl ring and 2) the regioselectivity of these processes is time dependent. Contrary to previous conclusions it is shown that hydrogen transfer in the formation of C7H8+ -occurs via five-, six-and seven-membered transition states. The time dependence of the hydrogen exchange reaction preceding the alkene eliminations is discussed in detail.
Reactions of t-Butyl Peresters, XVI Reactions of Diakyl t-Butylperoxy Phosphates and Alkyl t-Butylperoxy Alkylphosphonates with Cycloalkenes in the Presence of Copper Ions
Authors: Sosnovsky George , Karas Gary 
Published: March 2015

Abstract
The reactions of dialkyl t-butylperoxy phosphates (1) and alkyl t-butylperoxy alkylphosphonates (2) with cyclohexene in the presence of a catalytic

amount of copper (I) bromide at 80 °C in benzene afforded the corresponding phosphates (3) and phosphonates (4) in 50 to 70% yield. The analogous reaction of 1 (R = i-C3H7) with cycloheptene also gave the corresponding phosphate (8, n = 3)

in 71% yield. However, phosphorylated cyclopentene (8, n = 1) and cyclooctene (8, n - 4) derivatives could not be isolated because of their thermal instability, and only the corresponding 1,3-cyclopentadiene and 1,3-cyclooctadiene were obtained in 92 and 38% yields, respectively. Thermal decomposition of 3 and 4 in the absence of a solvent at 110-115 °C gave 1,3-cyclohexadiene in 70 to 90% yield. For identification purposes, compounds 3 and 4 were prepared from the corresponding imidazole derivatives 5 and 6 and 2-cyelohexen- l-ol (7).

A mechanism is proposed for the copper ion catalyzed reaction of 1 and 2 with cycloalkenes.
Notizen: Redistribution Reactions of Monoorganothallium Compounds
Authors: Pohl Udo , Huber Friedo 
Published: March 2015

Abstract
Disproportionation of monoorganothallium acetate RT1X2 (X = CH3COO) does not become evident at room temperature since equilibrium concentrations of disproportionation products, R2TIX or TIX3 are too small to be detected, e.g. by NMR spectroscopy (solvent: CD3COCD3/ CH3OH; R = C6H5, CHs). (CH3O)3P, which had been used in the synthesis of Aryl2TlY (Y = CF3COO) from ArylTlYa [1], continuously removes TIX3 from the equilibrium and effects disproportionation of ArylTlX2. In the same way disproportionation of an AlkylTlX2 compound (Alkyl = CH3) could be accomplished for the first time. The exchange of the organic groups is rate determining.
Notizen: N- (Dimethylaminosulfonyl)-hydroxylamin, (CH3)2NSO2NHOH / N-(Dimethylaminosulfonyl )hvdroxylamine, (CH3)2NSO2NHOH
Authors: Oettle Johannes , Brink Klaus , Morawietz Gerd , Backhaus Michael , Boldhaus Michael , Bliefert Claus 
Published: March 2015

Abstract
N- (Dimethylaminosulfonyl)hydroxylamine is obtained from the reaction of dimethylaminosulfonyl chloride with hydroxylamine. This very weak acid has been characterized by IR, 1H NMR, and mass spectra. The alkaline hydrolysis is reported.
Notizen: Tetrakis - difluorooxoschwefelimidatometallate( II), [M(NSOF2)4]2-, (M = Hg, Co, Pd) / Tetrakis-difluorooxosulfurimidatometallates( II), [M(NSOF2)4]2-, (M = Hg, Co, Pd)
Authors: Eisenbarth Rainer , Sundermeyer Wolfgang 
Published: March 2015

Abstract
Tetrakis-difluorooxosulfurimidato-metallates (II), [M(NSOF2)4]2-, (M = Hg, Co, Pd) are prepared from Hg(NSOF2)2, CoCl2 and Pd(CH3COO)2, respectively, by reaction with (C6H5)4PNSOF2 or (C6H5)4AsNSOF2.
Perantimonidogallate und -indate: Zur Kenntnis von Ca5Ga2Sb6 , Ca5In2Sb6 und Sr5In2Sb6 / Ca5Ga2Sb6, Ca5In2Sb6 and Sr5In2Sb6 : the First Perantimonidogallate and -indates
Authors: Cordier Gerhard , Schäfer Herbert , Stelter Michael 
Published: March 2015

The new compounds Ca5Ga2Sb6, Ca5In2Sb6 and Sr5In2Sb6 crystallize in the orthorhombic system (space group: Pbam, No. 55) with the lattice constants:
Ca5Ga2Sb6: a = 1402.1(5) pm, b = 1210.6(4) pm, c = 445.2(2) pm;
Ca5In2Sb6: a = 1425.6(5) pm, b = 1213.3(4) pm, c = 457.2(2) pm;
Sr5In2Sb6: a = 1474.9(5) pm, b = 1269.6(4) pm, c = 466.0(2) pm.
In the structures there are anionic E(III)2E(V)6-strings, compensated by the alkaline earth ions. The compounds belong to the Zintl phases
Structure of Dibromo(1,2-diaminoethane)palladium(IV)-bis(1,2-diaminoethane)- palladium(II) Tetrakisperchlorate, [Pd(en)2Br2][Pd(en)2](ClO4)4
Authors: Martin R. , Keller H. J. , Müller B. 
Published: March 2015

Orthorhombic [Pd(C2H8N2)2Br2][Pd(C2H8N2)][ClO4]4, C8H32Br2Cl4N8O16Pd2, Mr = 890.42, crystallizes in space group Iba2, a = 9.651(2), b = 13.951(8), c = 10.771(2) Å, Z = 2, V = 1412.80 Å3, dc = 2.05 g cm-3, R = 0.0564 for 1545 unique reflections. Data collection: MoKα, λ = 0.71069 Å, room temperature.
The structure is a typical Wolffram’s Salt Analogue (WSA) with infinite stacks of planar [Pd(en)2]2+,4+ complex cations bridged by bromides. The ligands are three-dimensionally ordered. Intra-chain and inter-chain hydrogen bridges link the ligands with the perchlorate counter ions which occupy statistically two different orientations. Diffuse sheets appear together with Bragg reflections for 1 odd layers indicating a thermally activated motion of the bromides in chain direction. This model was confirmed with temperature dependent Weissenberg work
Structure and Reactivity of Aromatic Polymers/Ruthenium Catalysts
Authors: Ciardelli Francesco , Pertici Paolo 
Published: March 2015

Previously prepared (J. Mol. Catalysis 11, 353 (1981)) polystyrene/ruthenium systems have been examined by EXAFS, TEM, IR and Raman spectroscopy. A structure based on small metal clusters bound to the polymer by single ruthenium-arene binding is proposed. The general validity of the approach has been confirmed by preparing a similar product when starting with poly-1- vinylnaphthalene in the place of polystyrene.
Both systems are active for the hydrogenation of a large variety of unsaturated groups such as olefinic double bonds, mononuclear aromatic hydrocarbons, ketones, nitriles, nitroaromatic compounds and oximes. Catalytic activity, chemio- and stereoselectivity are discussed in terms of the proposed structure.
Preparation and Reactions of η3 -Allylcarboxylatoruthenium
Authors: Sano Kenji , Yamamoto Takakazu , Yamamoto Akio 
Published: March 2015

Abstract
Reactions of (1,5-cyclooctadiene)(1,3,5-cyclooctatriene)ruthenium(0) with 3-butenoic acid in the presence of tertiary phosphines, PR3 , afford η3 -allylcarboxylatoruthenium(II) complexes formulated as (PR3)2[xxx](1 (PR3 = PPh3), 2 (PR3 = P(C6H4-p-OCH3)3). The reaction of 1 with carbon monoxide gives the complex (PPh3)2(CO)[xxx] while reaction with Br 2 or I 2 leads to ring closure of the organic ligand to afford 2-butenolide.
Acetate Peroxyl Radicals, ·O2CH2 CO2
-: A Study on the γ-Radiolysis and Pulse Radiolysis of Acetate in Oxygenated Aqueous Solutions
Authors: Schuchmann Man Nien , Zegota Henryk , Sonntag Clemens von 
Published: March 2015

Abstract
Hydroxyl radicals from the radiolysis of N2O/O2 (4:1 v/v)-saturated aqueous solutions have been reacted with acetate ions (10-2M). As measured by pulse radiolysis, the resulting ·CH2CO2
- radicals react with oxygen yielding the corresponding peroxyl radicals, ·O2CH2CO2
- (k = 1.7 x 109 M-1s-1).
These peroxyl radicals decay bimolecularly (2k = 1.5 x 108 M-1s-1) giving rise to the products (G values in brackets) glyoxylic acid (2.7), glycolic acid (0.7), formaldehyde (1.4), carbon dioxide (1.4), organic hydroperoxide (0.7) and hydrogen peroxide (2.5). Oxygen is consumed with a G value of 5.3. Aided by data from pulse radiolysis it is concluded that the intermediate tetroxide formed upon the bimolecular decay breaks down by various routes to yield:
(i) hydrogen peroxide and two molecules of glyoxylic acid (ca. 27%);
(ii) oxygen, glycolic acid and glyoxylic acid (ca. 25%);
(iii) hydrogen peroxide and two molecules of formaldehyde, carbon dioxide and OH- (25%).
These reactions do not involve free radicals as intermediates;
(iv) There is some O⨪
2 (G ≈ 0.5) formed in the decay of the peroxyl radicals, which is attributed to the decay of intermediate oxyl radicals (tetroxide → O2 + 2 ·OCH2CO2
-) by 1,2-H shift, oxygen addition and HO2
· elimination, a reaction sequence which gives rise to glyoxylic acid (10%); (v)
The reaction of O2
⨪ with the organic peroxyl radical yields the hydroperoxide (13%).
Reaction (iii) is a novel peroxyl radical reaction.