bluuebunny/crossref_metadata_2025_split huggingface dataset:
Baldwin Rules for Ring Closure - a Re-examination of the Concept
Authors: Kansal V. K. , Bhaduri A. P. 
Published: February 2015

Abstract
The reaction of 5,5-diphenyl-γ-butyrolactone (3) with primary amines and ethyl γ-γ-diphenyl vinyl acetate with Aqu HBr in acetic acid served as examples for the exception to Baldwin rules for 5-exo-tet and 5-exo-trig ring closures. The structure of the reaction product of 3 with primary amines have been assigned on the basis of spectral data and conversion to γ-γ-diphenyl vinyl substituted acetamides, the authentic samples of which were prepared by an unambigous route of synthesis.
Cs2Sb8S13, ein neuer Formel-und Strukturtyp bei Thioantimoniten / Cs2Sb8S13 -A New Formula and Structure Type in the Group of Thioantimonites
Authors: Volk Klaus , Schäfer Herbert 
Published: February 2015

Cs2Sb8S13 has been prepared and its structure determined. It crystallizes in the triclinic system P1̄ with
a = 1543.7(5) pm, b = 1148.8(4) pm, c = 829.9(4) pm;
α = 71.89(5)°, β = 102.45(5)°, γ = 95.16(5)°.
SbS3-ψ-tetrahedra and SbS4-ψ-trigonal bipyramids are connected together to sheets, separated by Cs ions.
Neue elektrovalente ternäre Verbindungen des Kaliums mit Magnesium und Elementen der 5. Hauptgruppe / New Ternary Compounds of Potassium with Magnesium and Elements of the 5. Main Group
Authors: Vogel Rainer , Schuster Hans-Uwe 
Published: February 2015

Ternary Potassium Compounds, Crystal Data The compounds KMgP, KMgAs, KMgSb and KMgBi were prepared and their structures determined by powder and single crystal data. The compounds crystallize in a modified Cu2Sb type structure, space group P4/nmm-D4h
7. The cell parameters are:
KMgP: a = 444,6pm, c = 754,4pm, c/a = 1,69,
KMgAs: a = 454,6pm, c = 771,6pm, c/a = 1,69,
KMgSb: a = 481,2 pm, c = 820,2 pm, c/a = 1,70,
KMgBi: a = 488,1 pm, c = 838,2 pm, c/a = 1,72.
Reactions with the Arylhydrazones of some α-Cyanoketones
Authors: Kandeel Ezzat Mohemed , Sadek Kamal Usef , Elnagdi Mohamed Hilmy 
Published: February 2015

Abstract
The N-methylarylhydrazones of mesoxalodinitrile (3) and of ethyl cyanoglyoxalate (7) could be prepared via methylation of the corresponding phenylhydrazones 4 and 6 respectively. The hydrazones 3 and 8 reacted with hydrazine hydrate to yield the amidra-zone 1 and the hydrazide 2 b. The behavior of compounds 1 and 2 a, b towards a variety of reagents is reported. A variety of new α-arylhydrazononitriles were synthesised.
KHgAs (Sb) und KZnAs - Ternäre Verbindungen mit modifizierter Ni2In-Struktur/ KHgAs (Sb) and KZnAs - Ternary Compounds in a Modified Ni2In-Structure
Authors: Vogel Rainer , Schuster Hans-Uwe 
Published: February 2015

The compounds KHgAs, KHgSb and KZnAs were prepared and their structures determined by powder and single crystal data. The compounds crystallize in a modified Ni2In-type structure, space group P63/mmc-D4
6h. The cell parameters are:
KHgAs a = 450.6pm, c = 997.6pm, c/a = 2.21;
KHgSb a = 478.4pm, c = 1022.5pm, c/a = 2.14;
KZnAs a = 423.0pm, c = 1023.4pm, c/a = 2.42.
(H3O)[Al3(H2PO4)6(HPO4)2] · 4 H2O - ein 2
∞ Al-O-P vernetztes Phosphat mit Oxoniumionen enthaltenden Hohlräumen / (H3O)[Al3(H2PO4)6(HPO4)2] · 4 H2O - a 2
∞ Al-O-P Linked Phosphate with Hollows Containing Oxonium Ions
Authors: Brodalla Dieter , Kniep Rüdiger 
Published: February 2015

The crystal structure of (H3O)[Al3(H2PO4)6(HPO4)2] · 4 H2O contains layers consisting of AIO6 octahedra which share vertices with O2P(OH)2 and O3P(OH) tetrahedra. Within these layers there are vacancies (hollows) which are occupied by H3O+ species. Water molecules are fixed between neighbouring layers by hydrogen bonds.
The identity of some other related phosphates is discussed with respect to the crystal structure described in this paper.
Darstellung Diorganylamino-substituierter Carbodiphosphorane [1] / Synthesis of Diorganylamino Substituted Carbodiphosphoranes [1]
Authors: Appel Rolf , Baumeister Ulrich 
Published: February 2015

Abstract
Aminolysis of the P-chlorofunctional carbodiphosphorane Ph3P = C = PPh2Cl (1) affords the diorganylamino substituted phosphonium salts

(3a-e, R = alkyl), which can be dehydrohalogenated in good yield by NaH to give the neutral compounds Ph3P = C - PP2(NR2) (4a-e). The structure of the hitherto unknown amino-carbodiphosphoranes has been confirmed by 31P{1H} and 13C{1H} NMR data as well as by hydrolysis to give 5, hydrochlorination to 6b, e and methylation to 7a, e.
Produkte der Umsetzung des Pentacarbonyleisens mit N-substituierten Imidazolen / Products of the Reaction of Pentacarbonyl Iron with N-Substituted Imidazoles
Authors: Seel Fritz , Lehnert Rudi , Bill Eckhard , Trautwein Alfred 
Published: February 2015

Abstract
1-Methyl-, 1-ethyl-, 1,2-dimethyl-and 1,2,3,4-tetramethylimidazole react with pentacarbonyliron to yield [FeIm6][Fe(CO)8] (1), [FeIm6][Fe(CO)4]2 (2), [FeIm4][Fe(CO)4] (3) and Fe(Im)(CO)2 (4) (Im = substituted imidazole). The crystal and molecular structures of 1 and 2 have been determined by X-ray diffraction. For 1 and 2 agreement between calculated and measured Mössbauer absorption intensities was obtained by taking into account Debye-Waller-factors, which were derived from the X-ray diffraction experiments.
Gemischtvalente Oxovanadate, I Ein neuer Strukturtyp für die Verbindung BaV10O15/Oxovanadates with Mixed Valence, I A New Crystal Structure of BaV10O15
Authors: Beaulieu D. Chales de , Müller-Buschbaum Hk. 
Published: February 2015

Abstract
BaV10O15 was prepared by high temperature reaction of BaO and V2O3 in H2-atmosphere (T > 1800°). X-ray investigations of single crystals show a new structure type with octa-hedral coordination of V3+/V2+ (statistical distribution) and cuboctahedral surrounding of Ba2+ . Orthorhombic symmetry, space group D18
2h-Ccmb, a = 995,8; b = 1161,8; c = 941,0; Z = 4.
119Sn-NMR-Verchiebungen und Koordinationsverschiebungen von Halogenstannylenkomplexen/119Sn-NMR Shifts and Coordination Shifts of Halogenostannylene Complexes
Authors: Mont Wolf-Walther du , Kroth Heinz-Jürgen 
Published: February 2015

Abstract

119Sn NMR data of a number of base-stabilized stannylenes L (L = R3P-SnCl2, (THF)xSnCl2, (THF)xSnBr2 are compared with those of the corresponding tin ylid complexes M(CO)5L (M = Cr, W). 119Sn NMR coordination shifts are strongly dependent on the transition metal. Increasing the number of base ligands attached to transition metal-coordinated tin(II) leads to significant upfield shifts and to increasing coupling constants 1J(119Sn183W).
Synthese yon 2.2-Dihydro-1.4.2-diazaphosphol-4-enen [1]/Synthesis of 2,2-Dihydro-1,4,2-diazaphosphol-4-enes
Authors: Burger K. , Penninger S. , Tremmel S. 
Published: February 2015

Abstract
4,4-Bis(trifluoromethyl)-1,3-diazabuta-1,3-dienes below 0 °C react with P(III) compounds to give 2,2-dihydro-1,4,2-diazaphosphol-4-enes. IR, 1H, 19F, 31P NMR, and mass spectra data of the new heterocyclic compounds are discussed.
Schwingungsspektren der käfigstrukturierten Verbindungen P4S3, P4Se3, As4S3 und As4Se3 / Vibrational Spectra of the Cage Compounds P4S3, P4Se3, As4S3 and As4Se3
Authors: Bues W. , Somer M. , Brockner W. 
Published: February 2015

The vibrational spectra of the cage compounds P4S3, P4Se3 and AS4S3 have been recorded in the solid and the molten state. The vibrational spectra of crystalline As4Se3, which decomposes during melting, have been investigated. The frequencies wore assigned using the concept of group frequencies.
A new assignment of the Raman frequencies is proposed for P4S3 based on new po­larization data. The frequencies of the arsenic compounds are reported for the first time. The Raman spectra of the molten compounds suggest that the cage structure is retained in the molten state.
Darstellung von "Nitrenkomplexen" via Säureazide und Azidosäureester / Synthesis of "Nitrene Complexes" via Acid Azides and Azido Acid Esters
Authors: Korswagen Richard , Ziegler Manfred L. 
Published: February 2015

Abstract
The photochemical reaction of carboxylic acid azides and azido carboxylic acid esters, respectively, with η5 -C5H5Mo(CO)3CH3 in CH2Cl2 seems to be a general route to the nitrene bridged complexes η5-C5H5(O =)Mo-μ(O)-μ(NCOR)Mo(= O)-η5 -C5H5 and η5-C5H5(O =)Mo-μ(O)-μ(NCOOR)Mo (= O) - η5-C5H5.
Verteilung und Valenz der Kationen in Spinellsystemen mit Eisen und Vanadium, I Röntgenographische und Mößbauer-spektroskopische Untersuchung des Spinellsystems ZnV2O4-ZnFe2O4 / Distribution and Valence of the Cations in Spinel Systems with Iron and Vanadium, IX-ray Investigation and Mössbauer Spectra of the Spinel System ZnV2O4-ZnFe2O4
Authors: Riedel Erwin , Dützmann Till , Pfeil Norbert 
Published: February 2015

Abstract
The spinel system Zn[FexV2-x]O4 has been prepared by heating mixtures of ZnV2O4 and ZnFe2O4 at 1000 °C. The lattice constants increase linearly with x by 3.6 pm, the oxygen parameters are constant with a mean value u = 0.384s. The parameters of room temperature Mössbauer spectra show that in the whole series V(III) and Fe(III) are present.
Verteilung und Valenz der Kationen in Spinellsystemen mit Eisen und Vanadium, IIRöntgenographische Untersuchung, Seebeck Koeffizienten, Mößbauer-und IR-Spektren der Mischkristallreihen Fe2VO4-ZnV2O4 und Fe2VO4-ZnFe2O4 / Distribution and Valence of the Cations in Spinel Systems with Iron and Vanadium, IIX-ray Investigation, Seebeck Coefficients, Mössbauer and IR Spectra of the Solid Solutions Fe2VO4-ZnV2O4 and Fe2VO4-ZnFe2O4
Authors: Riedel Erwin , Pfeil Norbert 
Published: February 2015

Abstract
The spinel series Fe2VO4-ZnV2O4 and Fe2VO4-ZnFe2O4 have been prepared and investigated. The lattice constants and Mössbauer spectra lead to a distribution of cations which proves that Fe2VO4 is a partially inverse spinel with Fe(II) and Fe(III) on the tetrahedral site. The Seebeck effect is interpreted with a model of both tetrahedral and octahedral conduction based on charge hopping.
Zur Kenntnis farbiger ternärer und quaternärer Zintl-Phasen / Coloured Ternary and Quaternary Zintl-Phases
Authors: Eberz Ursula , Seelentag Werner , Schuster Hans-Uwe 
Published: February 2015

Abstract
Ternary and quaternary, mostly coloured compounds of Au, Pd and Pt, resp., with Li, Mg, Sc and Sn were prepared and structurally investigated. They crystallize in a "filled" Zinkblende type structure (space group F?3m) and can be characterized as ternary or quaternary Zintl-phases. Colours seem to depend on unfilled d-orbitals of Au, Pd or Pt.
Darstellung und Charakterisierung der Tetrabutylammoniumsalze der Tetrahalogenooxotechnetate(V), [TcOCl4]- und [TcOBr4]- / Preparation and Characterization of the Tetrabutylammonium Salts of the Tetrahalooxotechnetates(V), [TcOCl4]- and [TcOBr4]-
Authors: Preetz W. , Peters G. 
Published: February 2015

Abstract
The treatment of (TBA)TcO4 with conc. HCl or HBr at room temperature yields (TBA)[TcOCl4] or (TBA)[TcOBr4], which are nearly insoluble in acidic aqueous solutions, but well soluble in organic solvents. The vibrational spectra indicate C4v symmetry for the complex ions. (TBA)[TcOBr4] shows an unusual resonance Raman effect, as the progression of overtones runs with the B1 TcCL4 stretching vibration instead of the symmetric A1 mode. The coupling of B1 with the first overtone of νTcO gives more intense difference than combination bands.
Notizen: Ternäre Gamma-Messing Phasen in den Systemen Calcium-MIB(IIB)-Quecksilber / New Ternary Gamma-Brass Phases in the Systems Ca-MIB(IIB)-Hg
Authors: Ban Z. , Pušelj M. 
Published: February 2015

Abstract
A series of new ternary intermetallic compounds of the general composition Ca16M18
IB(IIB)-Hg18 (M = Zn, Cd, Hg, Cu, Ag and Au) has been identified. The X-ray powder diffraction patterns were indexed on a basis of primitive cubic unit cells.
From the X-ray data and density measurements it is concluded that these phases belong to the partially disordered (MIB(IIB) and Hg) gamma-brass structure type D83.
Elektrochemische Synthesen, IV Metallcarbonylverbindungen der Eisengruppe/Electrochemical Syntheses, IV Metal Carbonyl Compounds of the Iron Group Elements
Authors: Grobe Joseph , Schneider Bernd Heinz 
Published: February 2015

Abstract
The electrochemical synthesis of iron, cobalt, and nickel carbonyl compounds from metal acetylacetonates of oxidation state + II or + III and from metal anodes is described, solvent effects and the problem of cluster formation are discussed.
Elektrochemische Synthesen, V Phosphansubstituierte Metallcarbonyle der Eisengruppe/ Electrochemical Syntheses, V Phosphane Substituted Metal Carbonyls of the Iron Group Elements
Authors: Grobe Joseph , Schneider Bernd Heinz 
Published: February 2015

Abstract
The electrochemical synthesis of iron, cobalt, and nickel carbonyl derivatives with phosphane ligands from metal anodes is described.
Über Oxidpnictide: Zur Kenntnis von Ba2Mn2Sb2O und Ba2Mn2Bi2O/On Oxidpnictides: Preparation and Crystal Structure of Ba2Mn2Sb2O and Ba2Mn2Bi2O
Authors: Brechtel Erwin , Cordier Gerhard , Schäfer Herbert 
Published: February 2015

Abstract
The new oxide pnictides Ba2Mn2Sb2O and Ba2Mn2Bi2O crystallize in the hexagonal system (space group P63/mmc) with the following constants:
Ba2Mn2Sb2O: a = 471 ± 1 pm, c = 2004 ± 2 pm, c/a = 4.255,
Ba2Mn2Bi2O: a = 480.3 ± 0.5pm, c = 2009.7 ± 1.0pm, c/a = 4.184.
The Mn and Sb(Bi) atoms form corrugated hexagonal nets. These nets are bridged between the Mn atoms by O atoms to double layers separated by Ba atoms.
Strukturen und Schwingungsspektren des Tetramethylammonium -a -dodekawolframatosilikats und des Tetrabutylammonium-β-dodekawolframatosilikats / Structures and Vibrational Spectra of Tetramethylammonium a-Dodecatungstosilicate and Tetrabutylammonium β-Dodecatungstosilicate
Authors: Fuchs Joachim , Thiele Axel , Palm Rosemarie 
Published: February 2015

Abstract
Dodecatungstosilicates free of crystal water were prepared for the first time by using tetraalkylammonium as cation. The crystal structure of the tetramethylammonium a-dodeeatungstosilicate [N(CH3)4]4SiW12O40 (1) and tetrabutylammonium) β-dodecatungstosilicate, [N(C4H9)4]4SiWi2040 (2) were solved by X-ray diffraction. (1) crystallizes tetragonal in the space group 14̅ with lattice parameters a = 14.642 Å; c= 12.706 Å; (2) orthorhombic, space group P212121 with a = 29.277 Å, b = 22.181 Å and c = 15.381 Å. The differences between the two isomeric heteropolyanions are discussed, especially the distances and angles between the tungsten atoms.
Comparison of characteristic differences in the vibrational spectra permits the identification of the isomeric anions.
Über Cyanohalogenomercurate der Alkalimetalle / On Cyanohalogenomercurates of Alkali Metals
Authors: Thiele Gerhard , Brodersen Klaus 
Published: February 2015

The reactions between Hg(CN)2 and HgX2 in aqueous solutions of alkali halides MX (M = Na, K, Rb; X = CN, Cl, Br, I) lead to mixed cyanohalogenomercurates.
Several compounds gained by crystallisation from aqueous solutions were characterized with X-ray, spectroscopic and thermal methods. The crystal structures of NaHg(CN)2Cl · H2O, KHg(CN)2Cl · H2O and RbHg(CN)2Cl · H2O have been determined by X-ray structure analysis with three-dimensional data. The compounds can be characterized as double salts, because the structures consist of Hg(CN)2-units and isolated M+ and Cl- ions. The relationship between these structures and those of the non-hydrated compounds are discussed.
Synthese und Stabilisierung von (Benzoyl-und Pentafluorbenzoyloxy)diphenylphosphan und Vergleich mit den entsprechenden isomeren Aroyldiphenylphosphanoxiden / Synthesis and Stabilization of (Benzoyl-and Pentafluorobenzoyloxy)diphenylphosphane and Comparison with the Corresponding Isomeric Aroyldiphenylphosphane Oxides
Authors: Lindner Ekkehard , Wuhrmann Juan Carlos 
Published: February 2015

Abstract
(Benzoyloxy)-and (pentafluorobenzoyloxy)diphenylphosphanes RC(O)OPPh2 (2a, b) [R = C6H5 (a), C6F5 (b)] can be obtained by reaction of ClPPh2 (1) with NaO2CC6H5 and AgO2CCeF5, respectively [eq. (1)]. Oxidation of 2a with molecular oxygen yields (benzoyl-oxy)diphenylphosphane oxide (3a) [eq. (2)]. The complexes (OC)5CrPPh2OC(O)R (5a, b) are formed by the action of Na2OCC6H5 and AgO2CC6F5, respectively on (OC)5CrPPh2Cl (4) [eq. (3)]. The chemical and spectroscopical properties of the (aroyloxy)diphenylphosphanes (2 a, b) are compared with the corresponding aryldiphenylphosphane oxides.
(η3+ -Benzyl)(η4 -cyclooctadien)rhodium(I)-Komplexe / (η3 -Benzyl)(η4 -cyclooctadiene)rhodium(I) Complexes
Authors: Stühler Hans-Otto , Pickardt Joachim 
Published: February 2015

Abstract
Reactions of [(COD)RhCl]2 (2) (COD = 1,5-cyclooctadiene) with i-C3H7MgBr in ether and styrene or o-methylstyrene lead to formation of the complexes [(COD)Rh(η3 -7-methyl-benzyl)] (3) and [(COD)Rh(η3 -6,7-dimethylbenzyl)] (4), respectively. 4 was characterized by X-ray analysis. With β-methylstyrene or allylbenzene [(COD)Rh(η3 -7-ethylbenzyl)] (5) is formed; the latter case leads to precedent isomerisation of allylbenzene to β-methyl-styrene. On the other hand no η3 -benzylrhodium complexes could be isolated by reactions of 2 with a-methylstyrene, 2,4-dimethylstyrene, 2,6-dimethylstyrene or 2,4,6-trimethyl-styrene. The steric reasons for this behaviour are discussed.
A Fundamental Study of Quantitative Desulfurization of Sulfur Containing Amino Acids by Raney Nickel and its Character
Authors: Ohmori Shinji , Takahashi Kazuko , Ikeda Mikiko , Ubuka Toshihiko 
Published: February 2015

Abstract
The desulfurization of several naturally occurring sulfur-containing amino acids by Raney nickel was studied under various conditions. Raney nickel, which was prepared by treating Al-Ni alloy with 5 N NaOH at 60 °C for 30 min, and was not washed with water, was most active and desulfurized, in quantitative yield, methionine, homocysteine, homocystine, homocysteine sulfinic acid, S-(2-carboxy-n-propyl)-L-cysteine, cysteine, cystine, cysteine sulfinic acid and S-methylcysteine sulfoxide. Raney nickel prepared from 100 mg of Al-Ni alloy desulfurized quantitatively up to 40 μmol methionine at 60 °C for 30 min. The desulfurization occurred effectively in the pH range of 7 and 13, but not below 7. Methionine sulfone, cysteic acid, and homocysteic acid were not subject to the reaction. The Raney nickel was deactivated by H2S, and H2O2, or combustion. Desulfurization activity was not enhanced by hydrogen gas.
Sesquiterpenester der B-Reihe aus Euonymus europaeus L. [1] / Sesquiterpene Esters of Type B from Euonymus europaeus L. [1]
Authors: Romer A. , Thomas H. , Kreuels B. , Budzikiewicz H. 
Published: February 2015

Abstract
The structure of several esters of 8-epi-desoxymaytol has been elucidated.
Beiträge zur Chemie der Trifluormethylseleninsäure, Redoxprozesse im F3-O-SCFnCl3-n-System / Contributions to the Chemistry of Trifluoromethylseleninic Acid, Redox Processes in the F3CSe(O)OSCFnCl3-n System
Authors: Darmadi Alexius , Haas Alois , Tebbe Klaus 
Published: February 2015

Abstract
Reactions of F3CSe(O)OAg with FnCl3-nCSCl (n = 3, 2, 1) give the compounds F3CSeS(O2)CFnCl3-n. These decompose in the range of- 20 °C to 39 °C to F3CSeCFnCl3-n plus SO2. IR, NMR and mass spectra of the newly prepared compounds are presented.
Reactions of (η-C5H5)Co(CO)2 and (η-EtMe4C5)Co(CO)2 with Iodine and Cyanogen Halides, XCN (X = Br OR I)
Authors: Morán Moisés 
Published: February 2015

Abstract
Cyanogen Halides The title compounds react with iodine to give the iodinecarbonyl complexes (η-C5H5)Co(CO)I2 and (η-EtMe4C5)Co(CO)I2. The reactions of the same compounds with the cyanogen halides XCN (X = Br or I) give rise to the formation of mixed cyano-carbonyl complexes (η-C5H5)Co(CO)(CN)X and (η-EtMe4C5)Co(CO)(CN)X (X = Br or I) respectively. The compounds have been characterized by elemental analyses and IR and HNMR spectra.
5-Chlor-5-phenyl-1-oxa-4.6-dithia-5-stannocan, ein diplanarer Übergangszustand bei der Racemisierung der Wanne-Sessel- Konformation in einem 8-Ring [1] / 5-Chloro-5-phenyl-1-oxa-4,6-dithia-5-stannocane, a Diplanar Transition State for the Racemisation of the Boat-Chair Conformation in an Eight-Membered Ring [1]
Authors: Dräger Martin 
Published: February 2015

Abstract
The title compound has been synthesized from PhSnCl3 and the disodium salt of bis(2-mercaptoethyl)ether. The crystal structure has been determined and refined to R - 0.033. The conformation of the eight-membered heterocycle is slightly disordered and represents a diplanar form, which is generally considered the transition state near the saddle point of the energy surface between the two enantiomers of the boat-chair con-formation. The configuration around tin is a trigonal bipyramid with equatorial sulfur atoms, an equatorial phenyl group and with axial atoms Cl and O (transannular distance Sn···O 241 pm).
Metallorganische Lewissäuren, V [1] Reaktionen von Carbonyl-η5-cyclopentadienylmolybdä ntetrafluoroboraten (η5-C5H5)MO(CO)2(L)FBF3 (L=CO, PR3) mit Phosphanen und Alkenen / Organometallic Lewis Acids, V [1] Reactions of Carbonyl-η5-cyclopentadienyl Molybdenum Tetrafluoroborates (η5-C5H5)Mo(CO)2(L)FBF3 (L = CO, PR3) with Phosphanes and Alkenes
Authors: Sünkel Karlheinz , Ernst Herbert , Beck Wolfgang 
Published: February 2015

Abstract
Tetrafluoroborate complexes (η5 -C5H5)Mo(CO)2(PR3)FBF3 have been prepared by hydride abstraction from the corresponding hydrido compounds using Ph3CBF4. The tetrafluoroborate ligand in (η5 -C5H5)Mo(CO)2(L)FBF3 (L = CO, PR3) is easily sub-stituted by phosphanes, cis-and trans-butene(2), a-acetamidocinnamic acid and buta-diene. Nucleophilic addition of HNMe2 to the butadiene complex [(η5 -C5H5)Mo(CO)3 butadiene)]+BF4
- gives the β-aminoacyl chelate compound 7.
Struktur und Schwingungsspektrum des α-Undekawolframatophosphats Na2[N(CH3)4]4HPW11O39 · 7H2O / Structure and Vibrational Spectrum of the α-Undecatungstophosphate Na2[N(CH3)4]4HPW11O39 · 7H2O
Authors: Fuchs Joachim , Thiele Axel , Palm Rosemarie 
Published: February 2015

The crystal structure of the compound Na2[N(CH3)4]4HPW11O39 · 7H2O was solved by X-ray diffraction. It crystallizes in the space group C2/m with lattice parameters a= 23.895 Å, b = 11.417 Å, c = 28.930 Å, β= 126.0°.
The distances between the tungsten atoms and the kind of bridging by oxygen atoms prove the α-isomer. The differences between the vibration spectra of α-undecatungsto-phosphate and α-dodecatungstophosphate are discussed
Zum Bildungsmechanismus von Vanadium Nitrosyl-Komplexen aus Hydroxylamin:Reversible, intramolekulare Umwandlung eines Nitrosylliganden in einen Hydroxylamido(1 —)-Liganden / On the Mechanism of the Formation of Nitrosylvanadium Complexes from Hydroxylamine: Reversible, Intramolecular Conversion of Coordinated Nitric Oxide to a Hydroxylamido(1—) Ligand
Authors: Wieghardt Karl , Quilitzsch Udo 
Published: February 2015

Abstract
The kinetics and the mechanism of a reversible, intramolecular conversion of a coordinated nitrosyl ligand into a probably O,N-coordinated hydroxylamido(1-) ligand is reported for the complex anion [V(tha)(NO)(H2O)]- (tha = 1,1′,1″-nitrilo-tris-2-propanol). Mechanisms for the formation of nitrosyl complexes of the type {V-N=O}4 generated from hydroxylamine and complexes of vanadium in the oxidation states + V or + III, respectively, are proposed.
Organometallphosphin-substituierte Übergangsmetallkomplexe, XXVII [1] Reaktionen von Pentacarbonylmangan-und Pentacarbonylrheniumbromid mit Organoelement(rVb)phosphinen / Organometalphosphine-Substituted Transition Metal Complexes, XXVII [1] Reactions of Pentacarbonylmanganese-and Pentacarbonylrheniumbromide with Organoelement(IVb) Phosphines
Authors: Schumann Herbert , Neumann Heinrich 
Published: February 2015

Abstract
The reactions of pentacarbonyl manganese bromide and pentacarbonyl rhenium bromide with di(tert-butyl)trimethylsilyl phosphine, teri-butyl-bis(trimethylsilyl)-, -(germyl)-, -(stannyl) phosphine, as well as with tris(trimethylsilyl)-, -(germyl)-, and -(stannyl) phosphine result in the elimination of one CO ligand and the formation either of corresponding bromo-tetracarbonyl(organometalphosphine)manganese or -rhenium complexes or of corresponding octacarbonyl-bis(μ-organometalphosphido)dimanganese or -dirhenium complexes. The IR, NMR, and Mössbauer spectra are reported and discussed.