bluuebunny/crossref_metadata_2025_split huggingface dataset:
Zur Kenntnis der Verbindungen CaNi2As2, SrNi2As2 und Ca2,3Ni11,7As7 / On the Compounds CaNi2As2, SrNi2As2, and Ca2,3Ni11,7As7
Authors: Mewis Albrecht , Distler Astrid 
Published: February 2015

Abstract
Investigations of the systems Ca(Sr)-Ni-As resulted in the discovery of three ternary phases. CaNi2As2 and SrNi2As2 are isotypic and crys-tallize in the ThCr2Si2-structure (space group I 4/mmm) with the following constants:
CaNi2As2 a = 406.5(1) pm, c= 994.9(2) pm, SrNi2As2 a = 415.4(1) pm, c = 1029.0(2) pm.
Ca2.3Ni11.7As7 (a= 940.4(1) pm, c= 381.6(1)pm) crystallizes in a hexagonal lattice; a Zr2Fe12P7-structure is supposed.
Reactions with the Arylhydrazones of α-Cyanoketones: Utility of Arylhydrazonomesoxalonitriles for the Synthesis of Azoles and Azolines
Authors: Hafez Ebtisam Abdel Aziz , Khalifa Mohamed Ali Elsayed , Guda Sayed Kamel Ahmed , Elnagdi Mohamed Hilmy 
Published: February 2015

The arylhydrazonomesoxalonitriles derivatives 1 a - c were utilised for the synthesis of several new pyrimidine, pyridines, triazine and isoxazole derivatives.
Compound 1 a reacted with alkyl halides to yield the N-alkyl derivatives 12a, b. The latter reacted with hydrazines to yield the amidrazones 13 a, b.
Zur elektrochemischen Untersuchung von 1-Phenyl-5-mercaptotetrazolen / Electrochemical Investigation of 1-Phenyl-5-mercaptotetrazoles
Authors: Gürtler Oswald 
Published: February 2015

The reductive and oxidative half-wave potentials of some phenyl-substituted derivatives of 1-phenyl-5-mercaptotetrazole were evaluated in acetonitrile.
Linear relationships between measured half-wave potentials and substituent values given by Hammett as well as influences of substituents on the electrochemical reactivity of 1-phenyl-5-mercaptotetrazoles has been studied. Furthermore, a reduction scheme of these compounds in acetonitrile at the Hg-Elektrode was established.
Spektralreines Bis(phthalocyaninato)protactinium(IV) / Spectroscopically Pure Bis(phthalocyaninato)protactinium(IV)
Authors: Lux Franz , Beck Oskar F. , Krauß Heinz , Brown David , Tso Tze C. 
Published: February 2015

Abstract
Spectroscopically pure PaPc2 has been prepared by reaction between PaI4 · 4 CH3CN and o-phthalic acid dinitrile in 1-chloronaphthalene followed by sublimation at 5 · 10-3 Pa in a temperature profile with three clearly defined zones (520 °C/350 °C/room temperature). This procedure gives a product almost completely free of H2Pc impurity which is known to have been present in previously reported complexes of the type AnPc2. Thus, the trace of H2Pc in the substance could only be detected by derivative spectroscopy. X-ray powder diffraction shows the compound to be isostructural with ThPc2 and UPc2. The ligand spectrum is typical of AnPc2 complexes, f-f Bands observed in a solid state spectrum provide additional proof that the compound is PaIV Pc2.
Reaktion von Imidodiphosphorsäuretetraphenylester mit Quecksilber(II)-oxid und Phenylquecksilberhydroxid / Reaction of Imidodiphosphoric Tetraphenylester with Mercury (II) Oxide and Phenylmercuryhydroxide
Authors: Richter Horst , Fluck Ekkehard , Schwarz Wolfgang 
Published: February 2015

Abstract
Reaction of imidodiphosphoric tetraphenylester with HgO yields the twelve-membered ring system 1, the properties, NMR and X-ray structural data of which are reported. A reaction mechanism is suggested. Reaction product from imidodiphosphoric tetraphenyl-ester and C6H5HgOH is N-phenylmercury-bis(phosphoric diphenylester)-imide (2).
Neue ternäre Phosphor-und Arsenverbindungen mit Zr2Fe12P7-Struktur / New Ternary Compounds of Phosphorus and Arsenic with the Zr2Fe12P7-Structure
Authors: Mewis Albrecht 
Published: February 2015

Abstract The ternary compounds Mg2.5Ni11.5P7, Ca2.1Ni11.9P7 and Ca2.3Ni11.7As7 were structurally characterized. They are isotypic and crystallize in the Zr2Fe12P7-type (space group P6̅) with the following constants:
Mg2.5NI11.5P7, a = 907,9(1) pm, c = 355,7(1) pm,
Ca2.1Ni11.9P7, a = 910.3(1) pm, c = 367.6(1) pm,
Ca2.3NI11.7AS7, a = 940.4(1) p m , c = 381.6(1) pm.
Ba2ZnGe2S6O: Ein neues Oxidsulfid mit Tetraedergerüststruktur/On Ba2ZnGe2S6O. A New Oxide Sulfide with Tetrahedral Framework Structure
Authors: Teske Chr. L. 
Published: February 2015

Abstract
Ba2ZnGe2S6O was prepared for the first time and the crystal structure determined by using single crystal X-ray methods. The space group is D3
2d-P4̄21m, tetragonal (No. 113). Lattice constants: a = 963.59 ± 0.22; c = 645.06 ± 0.25 pm. The tetrahedral framework structure is described and discussed. Zn is linked only to sulfur. The oxygen belongs to the coordination sphere of Ge and Ba.
Electronic and Resonance Raman Spectra of Some New Mixed-Valence Compounds of Pt and Pd with a Metal-Halide Chain
Authors: Papavassiliou G. C. , Layek D. 
Published: February 2015

Abstract
The electronic and resonance Raman spectra of new mixed-valence compounds of the type M2ʹ[M(L)X3][M(L)X5], where Mʹ = K, NH4, M = Pt or Pd, L = NH3 or pyridine, and X = Cl, Br or I, have been studied. The single-crystal polarized reflectance spectra indicate the one-dimensional semiconductor behaviour. The polarized resonance Raman spectra confirm the --M(II)--X-M(IV)-X linear chain structure, which is in accordance with the X-ray results. The polarization of M-N bands can be explained by the Snyder's theory (1971).
Perfluormethyl-Element-Liganden, XXIII [1] Darstellung und spektroskopische Untersuchung von Mo(CO)5L-Komplexen (L = R2EER2ʹ , R2EEʹR; R, Rʹ = CH3, CF3; E = P, As; Eʹ = S, Se, Te)/Perfluoromethyl Element Ligands, XXIII [1] Preparation and Spectroscopic Investigation of Mo(CO)5L Complexes (L = R2EER2ʹ, R2EEʹR; R, Rʹ = CH3, CF3; E = P, As; Eʹ = S, Se, Te)
Authors: Grobe Joseph , Le Van Duc 
Published: February 2015

Abstract
Mo(CO)5L complexes (L = R2EER2ʹ, R2EEʹR; R, Rʹ = CH3 and/or CF3; E = P, As; Eʹ = S, Se, Te) have been prepared by reaction of Mo(CO)5THF with L at room temperature. The new compounds were characterized by analytical and spectroscopic (IR, NMR, MS) methods.
The Metal Chelates of Heterocyclic β-Diketones and their Derivatives, Part IV New Mixed Ligand Tetrakis Complexes of Lanthanides Derived from tris-Acetylacetonates and Some 4-Acyl Pyrazolones
Authors: Okafor Emmanuel Chukwuemeka 
Published: February 2015

Abstract
Some new mixed ligand tetrakis chelates derived from tris acetylacetonates of La, Ce, Pr, Nd, and Gd with other β-diketones, like 1-phenyl-3-methyl-4-benzoyl-pyrazolone-5 and 1-phenyl-3-methyl-4-acetyl-pyrazolone-5 have been synthesised. The compounds are characterised by elemental analyses and IR data. The UV spectral properties and the conductance in DMF have also been reported.
Übergangsmetallkomplexe von Diazenen, XV [1] Darstellung und Eigenschaften von Heterodimetallkomplexen des Typs LnM-(cis-RN=NR)-MʹLm Transition Metal Complexes of Diazenes, XV [1] Synthesis and Properties of Heterodimetal Complexes LnM-(cis-RN=NR)-MʹLm
Authors: Battaglia R. , Kisch H. , Krüger C. , Liu L.-K. 
Published: February 2015

Abstract
Complexes of type LnM(η2 - pentamethylenediazirine)MʹLm, LnM/MʹLm = (CO)5Cr/Mo(CO)5, (CO)5Cr/Fe(CO)4, (CO)5W/Fe(CO)4 and (CO)5Cr/Mn(CO)2
5η(-MeC5H4) were prepared from [MʹLm(THF)] or Fe2(CO)9 and (η1 -pentamethylenediazirine)MLn. The structure of the Cr/Mo complex was determined by X-ray analysis. The IR and UV-VIS data resemble those of the corresponding homodi-metal complexes.
Notizen: Darstellung, IR-Spektrum und Kristalldaten von [ReNCl3 · POCl3]4 · 2POCl3/Preparation, IR Spectrum and Crystallographic Data of [ReNCL · POCl3]4 · 2 POCl3
Authors: Liese Werner , Dehnicke Kurt , Walker Ingeborg , Strähle Joachim 
Published: February 2015

Abstract
The title compound is prepared by treating ReNCL with excess POCl3. The complex is isotypic with the corresponding tungsten complex [WNCl3 · POCl3]4 · 2 POCl3. The structure consists of Re4N4 eight-membered rings with alternating Re ≡ N-Re bonds. The IR spectrum was recorded and assigned.
Notizen: Regiospecific Synthesis of 1,2-Dialkylthio-7(alkyl-or aryl)thiocycloheptatrienes and 1,2-Dialkylthio-7-alkoxycycloheptatrienes
Authors: Cavazza Marino , Morganti Gioia 
Published: February 2015

Abstract
Hydride abstraction by trityl tetrafluoborate from a mixture of cyeloheptatriene[1,2]-and cycloheptatriene[3,4]-p-dithiine gave tropenylium[1,2]-p-dithiin tetrafluoborate. The latter was found to add either methoxide or various thiolates only at the tropenylium C-3, which constitutes the first entry to regiospecifically trifunctionalized cycloheptatrienes. In contrast, cycloheptatriene[1,7]-p-dithiine or various other cycloheptatrienes substituted at C-7 with either methylthio or t-butylthio groups were found to undergo alkylthiolate abstraction by trityl tetrafluoborate. This limits the usefulness of the above synthetic methods for polyfunctionalized cycloheptatrienes.
Rb6In2S6 und Rb4In2S5, zwei neue Thioindate mit isolierten und verknüpften [In2S6]6- Anionen / Rb6In2Se6 and Rb4ln2S5, Two NEW Thioindates with Isolated and Connected [In2S6]6- Anions Respectively
Authors: Deiseroth Hans-Jörg 
Published: February 2015

Abstract
The hitherto unknown title compounds were prepared by a disproportionation reaction starting from elementary rubidium and indium monosulfide. Rb4ln2S5 crystallizes in the triclinic system (P1̄) with the lattice constants a = 931.7(2); b = 1097.6(3);c = 761.2(2)pm; a = 111.32°(2); β = 94.70°(2); γ = 103.70°(2) (Z = 2) and Rb6In2S6 in the monoclinic system (C2/m) with the lattice constants a = 895.3(2); b = 1356.9(2); c = 791.8(2) pm; β = 101.53°(2) (Z = 2). The quasi molecular [In2Se6]6- group which is isoelectronic with the gas phase molecule In2Cl6 consists of two edge sharing InS4 tetrahedra and is the basic unit of Rb6ln2S6 as well as of Rb6In2S6. The formation process, structural relationships between the two compounds and their possible role in the phase diagram of the components Rb2S and In2S3 are discussed.
Darstellung und spektroskopische Untersuchungen von Me3SiOP(S)Cl2, Me3SiOP(S)Br2 sowie Me3SiOP(O)Br2 / Preparation and Spectroscopic Properties of Me3SiOP(S)Cl2, Me3SiOP(S)Br2 and Me3SiOP(O)Br2
Authors: Shihada Abdel-Fattah , Majed Rehab 
Published: February 2015

Abstract
Trimethylsilyl dichlorothiophosphate (Me3SiOP(S)Cl2) and trimethylsilyl dibromothio-phosphate (Me3SiOP(S)Br2) are prepared by reactions of (Me3Si)2S with P0Cl3 and POBr3, respectively. The reaction of POBr3 with Me3SiOCOCH3 in the mol ratio 1:1 gives Me3SiOP(O)Br2, a molar ratio of 1:3 leads to (Me3SiO)3PO. The vibrational spectra have been used to elucidate the structures of the compounds. It was found that -OP(S)Cl2 as well as -OP(S)Br2 are linked to the trimethylsilyl group through the oxygen atom.
Mesoionische 4nπ-Heterocyclen, I Mesoionische 4π-Fünfringheterocyclen und 8π-Heteropentalene. Entwicklung der Systeme und Untersuchungen am 1-Oxo-lH-pyrazolo [1.2-a] pyrazol-4-ium-3-olat-Typ / Mesoionic 4nπ-Heterocycles, I Mesoionic 4π Five-Membered Heterocycles and 8 π-Heteropentalenes. Development of the Systems and Investigations on the 1-Oxo-1H-pyrazolo[1,2-a]pyrazol-4-ium-3-olate Type
Authors: Friedrichsen Willy 
Published: February 2015

Abstract
4n π-Mesoionic heterocycles are -with one exception -a hitherto unknown class of compounds. In this paper the possible 4 π-five-membered mesoionic heterocycles, their ring anellated derivatives and the corresponding heteropentalenes are derived. Reactions of the 1-oxo-1H-pyrazolo[1,2-a]pyrazol-4-ium-3-olate system with tetrachloro-o-benzo-quinone are described.
Reaction of Dihydroxymethyl Radical with Molecular Oxygen in Aqueous Solution
Authors: Bothe Eberhard , Schulte-Frohlinde Dietrich 
Published: February 2015

Abstract
Dihydroxymethyl radical (1) was found to react with oxygen diffusion controlled (k = 4.5 x 109 M-1 s-1). The final products of the reaction are formic acid and 1/2 hydrogen peroxide. The precursor of H2O2 was shown to be O2
·- which is formed with G(O2
·-) = 6.3 (a value which includes the O2
·- formed by H atoms and oxygen (G(H) = 0.55)). If it is assumed that dihydroxymethylperoxyl radicals are formed as intermediates the rate constant of O2
·- formation must be ≥ 106 s-1 . A bimolecular reaction of two dihydroxy-methylperoxyl radicals forming tetroxides does not occur at the dose rates used. The rate constants for the establishment of the equilibrium

have been determined at pH 5.7 and 19 °C to be k3=1.9x 10-2 M-1 s-1 and k-3 = 1.5 X 10-6 M-1 s-1 in aqueous solution.
Inerte Amminkomplexe als mehrwertige Kationsäuren in wäßriger Lösung / Inert Ammine Complexes as Multivalent Cationic Acids in Aqueous Solution
Authors: Kretschmer Matthias , Labouvie Lutwin , Quirin Karl-W. , Wiehn Helmut , Heck Ludwig 
Published: February 2015

Acidity constants of ammine complexes of tetravalent platinum in aqueous solutions have been determined by a spectrophotometric method at very low ionic strengths and extrapolated to zero ionic strength. Temperature variations of pK-values (25 °C and 50 °C) yield thermodynamic parameters for two successive deprotonation steps of hexaammineplatinum(IV), pentaamminechloroplatinum(IV), and tris(ethylenediamine)pla- tinum(IV) complexes and for the deprotonation of pentaammineaquacobalt(III) ion.
The enthalpy changes for the first and second steps are similar and range from 50 to 75 kJ/mole while for the aqua ligand of Co(III) 33 kJ/mole are found. The very large dif­ference in the entropy changes (about 70 to 80 J/K mole for the first step and -10 to + 20 J/K mole for the second step) is interpreted by a model of solvation change. The primary hydration sphere of strongly oriented and immobilized water dipoles around the highly charged complex cation is transformed to a hydrogen-bonded solvation sheath when the electric field of the complex is weakened upon release of the first proton.
Die Oxidation von aminosubstituierten Cyclotri(λ3-phosphazanen) mit Schwefel / Sulfur Oxidation of Amino Substituted Cyclotri(λ3 -phosphazanes)
Authors: Zeiß Werner , Klehr Hubert 
Published: February 2015

Abstract
Without being able to stop the reaction on the first or second stage, trisamino substituted cyclotri(λ3 -phosphazanes) (2) can be shown to add always three mole equivalents of sulfur under very mild reaction conditions to give cyclotri(λ5 -phosphazanes) (3). Suggesting the reaction to be stereospecific, 3 shows the same 31P NMR pattern as the starting materials 2. From this result and from molecular models, 3a-c as well as 2a-c are assumed to have diequatorial axial-substitution, whereas the bicyclic 2d and 3d are likely to have their phosphorus substituents in a diaxial-equatorial position.
Some Observation on Nickel(IV) Periodate
Authors: Chaudhury M. , Roy A. , Ghosh B. P. , Nag K. 
Published: February 2015

Abstract
Variable temperature EPR spectra of KNiIO6 · 0.5 H2O have established that the paramagnetic behavior of this compound (~ 1 BM) is due to the presence of nickel(III) atoms which have occupied some nickel(IV) sites in the crystal lattices. Change of spectral pattern from rhombic (77 K) to isotropic (300 K) is due to a dynamic Jahn-Teller effect. Electrical conductivity measurement has shown it to be a poor semiconductor. KNiIO6 · 0.5 H2O on heating at 300 °C forms K2Ni2I2O9 which is stable in the temperature range 300-400 °C. Chemical reactivities and reflectance spectrum of this compound have indicated it to be K2Ni2
III2
VIO9.
Beiträge zur Chemie des Bors, 112 [1]Zur Kenntnis von 1.3.2-Dithiaborolen [2] / Contributions to the Chemistry of Boron, 112 [1]1,3,2-Dithiaboroles [2]
Authors: Goetze Richard , Nöth Heinrich 
Published: February 2015

Abstract
The NMR data of this new class of compounds indicate in comparison to 1,3,2-dithia-borolanes, that the heterocycle can be looked at as a 6 π-electron system. A high degree of analogy in the mass spectrometric fragmentation of dithiaborolanes and dithiaborols exists, however, the parent ion of 2-methyl dithiaborol is more stable than that of the saturated analogon.
Compounds of Complex Halo and Pseudohalo Acids of the Group II B Metals, Part HI [1]Spectral Studies of the Hgl-
3 Ion
Authors: Perlepes S. P. , Zafiropoulos Th. F. , Kouinis J. K. , Galinos A. G. 
Published: February 2015

Abstract
A study has been made of the Far-IR spectra (250-30 cm-1) of the complexes HHgI3 · 2 Py and HHgI3 · 2 An (Py = pyridine and An = aniline), in the solid state. Associated anionic structures are present in the two complexes.
The UV spectrum of the aniline complex, in three solvents, shows that the HgI3
- ion is the predominant anionic species in solution.
Synthesis of Some Pyrazolo [Diazepine, Pyrazole, Isoxazole and Pyrimidine] Derivatives and Related Compounds
Authors: Afsah El-Sayed , Amer Fathy A. , Soafan Momdouh 
Published: February 2015

Abstract
4-Arylidene-3-methyl-1-phenyl-2-pyrazolin-5-ones (1a-d) undergoes condensation with diethylmalonate, p-nitroacetophenone and/or 3-acetyl-pyridine under Michael condition to give compounds 2, 3 and 4, respectively. Treatment of 3 and 4 with hydrazine afforded the pyrazolodiazepines 7 and 8, respectively. Interaction of la with diethyl phenyl-malonate gave the Michael product 9, which undergoes hydrolysis, decarboxylation and cyclisation to give the indanone derivative (11). Condensation of 1c with hydrazine, hydroxylamine and urea gives compounds 12, 13 and 14, respectively. Cyclisation of the Michael compound 15 gives the benzopyranopyrazole (14). When 1c was subjected to Riemer-Tiemann reaction gives compounds 17 and 18. Acetic anhydride treatment of 18 gives the acetyl cresotic acid derivative (19).
AB2X2-Verbindungen im CaAl2Si2-Typ, VIII [1] / AB2X2 Compounds with the CaAl2Si2 Structure, VIII [1]
Authors: Klüfers Peter , Neumann Hermann , Mewis Albrecht , Schuster Hans-Uwe 
Published: February 2015

Abstract
Thirteen new compounds were synthesized. They are supposed to crystallize with the CaAl2Si2 type of structure (space group P3̅m1) with the following constants:
SrZn2P2 a = 410.0(0) pm, c = 710.1(1) pm,
SrCd2P2 a = 433.8(0) pm, c = 726.9(1) pm,
BaCd2P2 a = 440.2(0) pm, c = 755.7(1) pm,
BaCd2As2 a = 451.6(0) pm, c = 769.3(1) pm,
BaMg2P2 a = 436.7(1) pm, c = 758.0(3) pm,
EuZn2P2 a = 408.7(1) pm, c = 701.0(1) pm,
EuZn2As2 a = 421.1(1) pm, c = 718.1(1) pm,
EuZn2Sb2 a = 448.9(1) pm, c = 760.9(1) pm,
YbZn2As2 a = 416.0(1) pm, c = 696.1(1) pm,
YbZn2Sb2 a = 444.4(1) pm, c = 742.4(1) pm,
LuZnCuAs2 a = 407.1(1) pm, c = 663.4(1) pm,
YZnCuP2 a = 398.3(1) pm, c = 652.3(1) pm,
YZnCuAs2 a = 410.4(1) pm, c = 669.2(1)pm.
Über zwei Modifikationen von "Tl2Cl3"-valenzgemischten Thallium(I)-hexahalogenothallaten(III) Tl3 [TlCl6] / On Two Modifications of "Tl2Cl3"-Mixed Valence Thallium(I)-hexahalogenothallates(III)
Authors: Böhme Reinhild , Rath Jörg , Grunwald Bernd , Thiele Gerhard 
Published: February 2015

The mixed valence thallium chloride "Tl2Cl3" is polymorphous. Raman spectra and comparable lattice translations suggest similar structures of both modifications.
The crystal structure of the rhombic α-Tl2Cl3 crystallizing in yellow, needle-shaped crystals, has been determined from three-dimensional X-ray diffraction data. The unit cell with cell parameters a= 1474.8(5) pm, b - 2508.7(6) pm and c = 1267.6(2) pm contains 16 formula units distributed on 24 independent atom positions. The compound is a mixed valence thallium(I)-hexachlorothallate(III) Tl3[TlCl6] because three of the nine independent Tl atoms are surrounded octahedrally by CI atoms in distances of 250-265 pm, while the other Tl atoms have seven, eight or nine CI neighbours variing between 306 and 383 pm.
β-Tl3[TlCl6] forms pale yellow thin platelets and crystallizes monoclinic with cell parameters a = 2549.4(13) pm, 6 = 1469.9(8) pm, c = 1308.5(12) pm and β = 108.58°.
Synthesis of Some Diazepinones, Oxazepinones, Pyrimidoquinazolinones and Related Compounds from 1,4-Bis(ethoxycarbonyl)-2,5-diamino-1,4-cyclohexadiene
Authors: Amer Fathy A. , Afsah El-Sayed , Metwally Mohamed A. , El-Zimaity Mohamed T. 
Published: February 2015

Abstract
Interaction of o-phenylenediamine with 1,4-Bis-(ethoxycarbonyl)-2,5-diamino-1,4-cyclo-hexadiene (1) gave 2, which cyclised to the hexahydrobenzodiazepinone (3). On the other hand, interaction of 1 with o-aminophenol, gave compound 4 which on treatment with polyphosphoric acid gave the tetrahydrobis-benzooxazepinone (11). Treatment of 1 with phenylisothiocyanate and formamide afforded the dithiopyrimidoquinazolinone (8) and the tetrahydropyrimidoquinazolinone (9), while the interaction of 1 with benzenesulphonyl-chloride gave dibenzenesulphonamido-cyclohexadiene dicarboxylate (10). The structure of these compounds was established by chemical and spectroscopic methods.
Studies on Vitamin B12 and Related Compounds, 51 [1] Direct Syntheses of Alkylcobalamins from Alkanes and Vitamin B12r under "Oxidizing-Reducing" Conditions
Authors: Maihub Abdussalam , Xu Hui Bi , Schrauzer Gerhard N. 
Published: February 2015

Abstract
Syntheses of methylcobalamin from methane, and of n-alkylcobalamins from n-alkanes (C2→C10) and vitamin B12r are described. The compounds are formed under "oxidizing-reducing" conditions: Oxygen radicals (O2-, HOO·, and HO·) are generated from the reaction of O2 with reducing metal ions, notably V+3 (aq) and abstract hydrogen from the alkane substrates. The resulting alkyl radicals are captured by vitamin Bj2r with high efficiency to yield alkylcobalamins. The reactions take place at room temperature in mildly alkaline or acidic solutions. In addition to n-alkylcobalamins, the preparation of neopentylcobalamin from neopentane, of isobutylcobalamin from isobutane, and of several cycloalkylcobalamins from cycloalkanes, is also reported. Methyl radicals generated in D2O from CH4 under "oxidizing-reducing" conditions are reduced to yield CH3D.
8-Hydroxy-4-methoxy-monothiochinaldinsäure - eine weitere Thiosäure aus Pseudomonas [1]. / 8-Hydroxy-4-methoxymonothioquinaldic Acid - a Further Thioacid from Pseudomonas
Authors: Neuenhaus W. , Budzikiewicz H. , Korth H. , Pulverer G. 
Published: February 2015

Abstract
The structure elucidation of 8-hydroxy-4-methoxy monothioquinaldic acid -a meta-bolite from Pseudomonas fluorescens -is described.
Notizen: Darstellung und IR-Spektrum von OsO4 · 2 SbCl5 / Preparation and IR Spectrum of OsO4 · 2 SbCl5
Authors: Dehnicke Kurt , Lößberg Rainer 
Published: February 2015

Abstract
Osmiumtetroxide and antimony pentachloride form a donor acceptor complex, OsO4 · 2 SbCl5. According to the IR spectrum the complex contains OsOSb bridges. With VCl4, TiCl4, MOCl5 and osmiumtetroxide rapid ligand exchange reactions occur, forming VOCl3, TiOCl2 and several oxochlorides of molybdenum and OsCl4, respectively.
Notizen: Nachweis eines doppelt verbrückenden MoS4
2- -Liganden zwischen Fe-Zentren mit dem Resonanz-Raman-Effekt und einfache Darstellung von [(C6H5)4P]2[Cl2FeS2MoS2FeCl2] / Identification of a Doubly Bridging MoS4
2- Ligand between Fe-Centers by the Resonance Raman Effect and a Simple Preparation of [(C6H5)4P]2[Cl2FeS2MoS2FeCl2]
Authors: Müller Achim , Sarkar Sabyasachi , Dommröse Anne-Marie , Filgueira Roberto 
Published: February 2015

Abstract
A very simple preparation method for the complex [Cl2FeS2MoS2FeCl2]2- is described and Fe2+/MoS4
2- interactions are discussed. The Resonance Raman Effect is a sensitive probe for the doubly bridging MoS4
2- ligand.
Stoßaktivierungs-Massenspektren von C6H6M+ -und C7H7M+ - Fragment-Ionen aus Übergangsmetall-π-Komplexen /Collisional Activation Mass Spectra of C6H6M+ and C7H7M+ Fragment Ions from Transition Metal π-Complexes
Authors: Müller Jörn , Lüdemann Frerk 
Published: February 2015

Abstract
Comparative structure investigations of simple gaseous ions formed by electron impact of organometallic π-complexes have been carried out by use of the collisional activation (CA) technique. The CA mass spectra of C6H6M+ ions (M = V, Cr, Fe) arising either from benzene or from methylcyclopentadienyl metal compounds show significant differences indicating different structures of these fragments. Similar observations were made with C7H7M+ ions produced from benzyl or cycloheptatrienyl chromium tricarbonyl derivatives, although the metal-free ligand ions exhibit identical CA mass spectra. The C6H6V+ -ion arising from C5H5VC7H7 by a rearrangement fragmentation was shown to have the π-benzene vanadium structure.