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161Author    Matthias Moll, Behrens* Werner Helmut, Günther Popp, WolfPeter Liehr, FehlhammerRequires cookie*
 Title    Über das [C7H7Fe2(CO)5]--Anion (C7H7 = Cycloheptatrienyl) About the [C7H7Fe2(CO)5]--Anion (C7H7 = Cycloheptatrienyl)  
 Abstract    The extremely unstable anionic complex [C7H7Fe2(CO)6]~ (C7H7 = cycloheptatrienyl) which decomposes in polar solvents under CO elimination to give [C7H7Fe2(CO)s]~ can be prepared by deprotonation of C7H8Fe2(CO)6 (C7H8 = cycloheptatriene) with NaN(SiMe3)2 in CßHe-The NMR spectra of [C7H7Fe2(CO)5]~ show the highly fluctional character of this anion in solution. The X-ray structural parameters of Ph4As[C7H7Fe2(CO)5] (space group P2i/n) can be interpreted in terms of a rotation of the tub shaped C7H7 ring against the CO bridged Fe2(CO)5 fragment in the solid state. Consequently, each iron atom is alternatingly rj 3 -or ^-coordinated to the allyl anion and the diene part, respectively, of the anionic 8n system of the cycloheptatrienyl ring. 
  Reference    Z. Naturforsch. 38b, 1446—1453 (1983); eingegangen am 7. Juni 1983 
  Published    1983 
  Keywords    Cycloheptatrienyl Pentacarbonyl Diferrate, IR Spectra, NMR Spectra, X-Ray 
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 TEI-XML for    default:Reihe_B/38/ZNB-1983-38b-1446.pdf 
 Identifier    ZNB-1983-38b-1446 
 Volume    38 
162Author    Ulrich Schubert, Klaus Ackermann, Gertraud Kraft, Barbara WörleRequires cookie*
 Title    Hydrido-Silyl-Komplexe, IV [1] Strukturelle Änderungen in Hydrido-Silyl-Komplexen  
 Abstract    infolge Si-H-Wechselwirkung; Strukturvergleich von (^CH3C5H4)(CO)2Mn(H)SiCl3 und trans-(n-CH3C5H4)(CO)2Mn(SiCl3)2 Hydrido Silyl Complexes, IV [1] Structural Changes in Hydrido Silyl Complexes Due to Si-H Interaction; Comparison of the Structures of (7t-CH3CöH4)(CO)2Mn(H)SiCl3 and *ra7is-(7r-CH3C5H4)(CO)2Mn(SiCl3)2 The main difference between the structures of MeCp(CO)2Mn(H)SiCl3 (1) and MeCp(CO)2Mn(SiCl3)2 (2) is that in 1 the SiCl3 ligand is tilted relative to the Mn-Si vector, due to Mn-H-Si three-center two-electron bonding. Mn-Si: 225.4(1) in 1, 232.0(2) pm in 2. Comparison of the structures of MeCp(CO)2Mn(H)SiR3 complexes shows that the Mn-Si distance and the tilt angle of the SiR3 group increases as Si-H interaction increases. A stereochemical pathway of the oxidative addition of HSiR3 to the CpMn(CO)3 fragment is suggested. 
  Reference    Z. Naturforsch. 38b, 1488—1492 (1983); eingegangen am 17. Mai 1983 
  Published    1983 
  Keywords    Silyl Metal Complexes, Three-Center Bonding, Si-H Interaction, X-Ray 
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 TEI-XML for    default:Reihe_B/38/ZNB-1983-38b-1488.pdf 
 Identifier    ZNB-1983-38b-1488 
 Volume    38 
163Author    KlausR. Pörschke, RichardM. Ynott, Carl Krüger, M. J. Rom, Herrn ProfRequires cookie*
 Title    Tris(phosphan)-Nickel(0)-Ethen  
 Abstract    Komplexe (dmpe)(PR3)Ni(C2H4). Molekülstruktur des (dmpe)(P0 3)Ni(C2H4) Tris(phosphane)-nickel(0)-ethene Complexes (dm pe)(PR 3)Ni(C2FI4). M olecular Structure of (d m p e)(P 0 3)Ni(C2F[4) Synthesis and properties of tris(phosphane)(ethene)nickel(0) complexes (dmpe)(PR3)Ni(C2H 4) (R = CH3 (4), c-C6H u (5), and C6H5 (6)) are reported. In solution. 4—6 are thermolabile and undergo ligand exchange reactions affording tetrakis(phosphane)nickel(0) and bis(phosphane)-(ethene)nickel(O) complexes. 1H , 13C, and 31P NMR data of 4 —6 confirm the tetrahedral geo­ metry around nickel. For 6 , the crystal and molecular structure has been determined by X-ray crystallography. 
  Reference    Z. Naturforsch. 39b, 1076—1081 (1984); eingegangen am 1. März 1984 
  Published    1984 
  Keywords    Ethene, Nickel(O), Phosphanes, NMR Characterization, X-Ray 
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 TEI-XML for    default:Reihe_B/39/ZNB-1984-39b-1076.pdf 
 Identifier    ZNB-1984-39b-1076 
 Volume    39 
164Author    KlausR. Pörschke, Richard Mynott, Klaus Angermund, ++, Carl KrügerRequires cookie*
 Title    Neue Bis(phosphan)-nickel(0)-alkin-Komplexe New Bis(phosphane)-nickel(0)-alkyne Complexes  
 Abstract    (Me 3 P)2Ni(C 2 H4) (5) and (dmpe) 2 Ni2(C 2 H4)3 (6) react with various alkynes including ethyne (acetylene) and 1-alkynes to form the crystalline compounds (Me 3 P) 2 Ni(C 2 RR'), (dmpe)Ni(C 2 RR'), and (dmpe)2Ni 2 (C 2 R2) 2 (R.R' = H, Me, Ph). Structural assignments were made on the basis of : H, I3 C, and 31 P NMR data. The crystal and molecular structure of (dmpe)Ni(C 2 Ph 2) (17) has been determined by X-ray crystallography. 
  Reference    Z. Naturforsch. 40b, 199—209 (1985); eingegangen am 15. Oktober 1984 
  Published    1985 
  Keywords    Alkynes, Nickel(O), Phosphanes, NMR Spectra, X-Ray 
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 TEI-XML for    default:Reihe_B/40/ZNB-1985-40b-0199.pdf 
 Identifier    ZNB-1985-40b-0199 
 Volume    40 
165Author    Henri Brunner, Walter Meier, Joachim Wächter, Heike Pfisterer, ManfredL. ZieglerRequires cookie*
 Title    Synthese von PR3 (R = Ph, OMe) substituierten Cubanclustern vom M2M'2S4-Typ und Molekülstruktur von (C5Me5)2Cr2Co2{P(OM e)3 }2(iM 3-S)4 Synthesis of PR3 (R = Ph, OMe) Substituted Cubanlike Clusters of the M2M'2S4-Type and Molecular Structure of (C5Me5)2Cr2Co2{P(OMe)3}2(u3-S) 4  
 Abstract    The reaction o f the cubane cluster (C 5M e5)2Cr2C o2(CO)2S4 with PR3 (R = Ph, O M e) re­ 
  Reference    Z. Naturforsch. 40b, 923 (1985); eingegangen am 16. März 1985 
  Published    1985 
  Keywords    H eterom etallic Cubane Cluster, Sulfur B ridged, CO -Substitution, X-Ray 
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 TEI-XML for    default:Reihe_B/40/ZNB-1985-40b-0923.pdf 
 Identifier    ZNB-1985-40b-0923 
 Volume    40 
166Author    Michael Zettlitzer, Heindirk Tom Dieck, Lutz StampRequires cookie*
 Title    Reactions of N-Silated Endiamines, I Transition Metal Complexes of l,3-Diaza-2-sila-4-cyclopentenes  
 Abstract    1,3-Diaza-2-sila-4-cyclopentenes 1 (D ISC), which are electron-rich and easily oxidizable ole­ fins, form strongly coloured, but poorly soluble 1:1 adducts with cuprous halides, while silver trifluoromethylsulfonate oxidizes 1. Much more soluble and again strongly coloured complexes of stoichiometry LPdX2, (L)15PdX2 and L 2PdX2 are formed from 1 and palladium halides. The well-crystallizing adduct (PdCl-,-L)o 3a was chosen for an X-ray structure analysis (monoclinic, space group P 21c; a = 10.215(3), b = 14.681(3), c -23.642(5) A , ß = 101.31(2)°; Z = 8 ; R = 0.054), which revealed an almost planar D ISC ligand in an oblique ?z2(C=C)-coordination relative to the 7r-plane. Structural data and rather peculiar spectroscopic properties encourage a comparison of 3a with complexes, in which an electron-rich olefin is split to give a bis(carbene) ligand system. The electronic reasons for the splitting of electron-rich olefins at d8 metals are discussed under symmetry considerations. 
  Reference    Z. Naturforsch. 41b, 1230—1238 (1986); eingegangen am 12. Februar/9. Juni 1986 
  Published    1986 
  Keywords    Endiamines, Palladium Complexes, X-Ray, Electron-Rich Olefins, Carbene-Type Complexes 
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 TEI-XML for    default:Reihe_B/41/ZNB-1986-41b-1230.pdf 
 Identifier    ZNB-1986-41b-1230 
 Volume    41 
167Author    D. Ieter, F. Enske, PaulM. Aue, K. Urt, M. Erzw EilerRequires cookie*
 Title    Zur  
 Abstract    Reaktion von (f/5-C5H 5)F e(C O)2Br mit Se(SiM e3)2 D ie Kristallstruktur von [S e{F e(C O)2(C5H 5)} 3]2[Fe4Se4Br4] R eaction of (^ -C s H ^ F e ^ O ^ B r with Se(SiM e3) 2 T he C rystal S tructure of [Se {F e (C O)2 (C 5 H 5) } 3 ]2 [Fe4Se4 B r4] 
  Reference    Z. Naturforsch. 42b, 928 (1987); eingegangen am 17. Februar 1987 
  Published    1987 
  Keywords    Synthesis, X -Ray, Crystal Structure of [Fe4Se4B r4]2~-Cluster 
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 TEI-XML for    default:Reihe_B/42/ZNB-1987-42b-0928_n.pdf 
 Identifier    ZNB-1987-42b-0928_n 
 Volume    42 
168Author    Joachim FuchsRequires cookie*
 Title    Kristallstrukturen und Schwingungsspektren zweier  
 Abstract    isomerer Oktadekawolframatodiarsenate, (NH4)6As2W180 62 • #iH20 C rystal S tructures and V ibrational Spectra of Tw o Isom ers of O ctadecatungsto-diarsenate (N H 4)6A s2W 18 0 6 2 • mH20 H o lg er N eu b e rt Six possible structures of A s2W ,80 626~ are discussed, and an exact nom enclature is proposed. The structures of the isomeric title compounds (I and II) were determ ined by X-ray diffraction. I crystallizes in space group P I with lattice param eters a = 12.965(4), b = 14.803(5), c = 18.515(6) Ä; a = 96.280(23)°, ß = 91.420(25)°, y — 115.320(25)°. The anion has the configuration first observed in K6P2W ,80 62-14 H 20 (D awson-structure). II was not known until now. It crystal­ lizes in the trigonal space group R 3 with lattice param eters a — b — 37.857(32). c = 13.108(13) Ä; a — ß = 90°, y = 120°. The structure of this anion differs from the D awson-structure by the 60° rotation of both polar groups of three W 0 6-octahedra (/3-type), followed by the 60° rotation of one of the two new AsWyO,,-units. Both rotations are about the 3-fold axis. The anion is centrosym m etric. Vibrational spectra and preparation of the isomers are described. 
  Reference    Z. Naturforsch. 42b, 951—958 (1987); eingegangen am 4. März/11. Mai 1987 
  Published    1987 
  Keywords    T ungstoarsenates, Isomers, X-Ray, V ibrational Spectra, Preparation 
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 TEI-XML for    default:Reihe_B/42/ZNB-1987-42b-0951.pdf 
 Identifier    ZNB-1987-42b-0951 
 Volume    42 
169Author    W. Milius, A. RabenauRequires cookie*
 Title    The Crystal Structure of CuSe 2 Cl  
 Abstract    The crystal structure of CuSe2Cl has been deter-mined by single-crystal X-ray diffraction. CuSe2Cl crystallizes monoclinically in space group P2,/c with the lattice parameters a = 768.3(9) pm, b = 462.5(5) pm and c = 1455.2(3) pm, ß = 135.2(4)°, Z = 4. The structure could be shown to be isotypic with CuTe2Cl. 
  Reference    Z. Naturforsch. 43b, 243—244 (1988); received October 21 1987 
  Published    1988 
  Keywords    Copper Chalcogen Halides, Crystal Structure of CuSe2Cl, X-Ray 
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 TEI-XML for    default:Reihe_B/43/ZNB-1988-43b-0243_n.pdf 
 Identifier    ZNB-1988-43b-0243_n 
 Volume    43 
170Author    Bruno Lunelli, Magda MonariRequires cookie*
 Title    Molecular and Crystal Structure of Two Cyclobuten-3,4-dione Derivatives: The Dithallium Salt of 1,2-Dicyanimino-(T12CMCB) and the l,2-Diiodocyclobuten-3,4-dione (I2 CB)  
 Abstract    The crystal and molecular structure o f the dithallium salt of the 1,2-dicyanim inocyclobuten-3,4-dione dianion and o f 1,2-diiodocyclobuten-3,4-dione. determined by X-ray diffraction, are re­ ported and discussed. Results o f FT-IR and calorimetric m easurem ents are also presented. 
  Reference    Z. Naturforsch. 44b, 169 (1989); received March 18/May 30 1988 
  Published    1989 
  Keywords    M olecular Structure, C yclobutendiones, Radical Precursors, X-Ray 
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 TEI-XML for    default:Reihe_B/44/ZNB-1989-44b-0169.pdf 
 Identifier    ZNB-1989-44b-0169 
 Volume    44 
171Author    PeterG. Jones, Anke Meyer, Reinhard Schmutzler, FrauM. Prof, BeckeRequires cookie*
 Title    Uber die Darstellung neuer spirocyclischer N,N'-Dimethylsulfamid-substituierter Phosphorverbindungen und N,N'-DimethyIsulfamid-verbrückter Diphosphorverbindungen The Preparation of New Spirocyclic N,N'-Dimethylsulphamide-Substituted Phosphorus Compounds, and of Some N,N'-Dimethylsulphamide-Bridged Diphosphorus Compounds  
 Abstract    The reactions of 4-chloro-l,3,5,7-tetramethyl-2,2,6,6-tetraoxa-2,6-dithia-l,3,5,7-tetraaza-4x:'-phosphaspiro[3.3]heptane (1) with trimethylsilyl compounds and sodium azide led to a series of spirocyclic N,N'-dimethylsulphamide-substituted phosphoranes (2—5). The nature of the penta-aza-spirophosphorane (4) was confirmed by an X-ray crystal structure determination (C2/c, a = 991.8(4), b = 1185.6(6), c = 1224.9(5) pm ,ß= 108.64(3)°, Z = 4, R = 0.041 for 1065 unique observed reflections); a crystallographic twofold axis passes through phosphorus and the nitrogen atom of the NMe2 group. The geometry at phosphorus is to a good approximation trigonal bipyramidal. The azido-spirophosphorane (5) undergoes Staudinger-type reactions with phosphorus(III) com­ pounds (PPh3, dppm) to form the mixed-valence phosphorus compounds 6—8 . The reaction of N,N'-dimethylsulphamide or N,N'-dimethyl-N,N'-bis(trimethylsilyl)-sulphamide with dichloro-phosphines RPC12 (R = Me, Ph) in a molar ratio 1:2 leads to the formation of the acyclic N,N'-dimethylsulphamide-bridged diphosphorus compounds 9 and 10, respectively. The spectro­ scopic properties (and, for 4, the X-ray crystal structure) of the products are compared with those of analogous urea-bridged phosphorus compounds. 
  Reference    Z. Naturforsch. 45b, 175 (1990); eingegangen am 26. Juni/7. September 1989 
  Published    1990 
  Keywords    Spirophosphoranes, NN'-Dimethylsulphamide, X-Ray, Staudinger Reactions, Diphosphorus Compounds 
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 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-0175.pdf 
 Identifier    ZNB-1990-45b-0175 
 Volume    45 
172Author    N. Ullrich, C. Stegmair, H. Keller, E. Herdtweck, F. R. KreißlRequires cookie*
 Title    Darstellung und Struktur kationischer i^-Thiocarbenkomplexe von Molybdän und Wolfram Synthesis and Structure of Cationic //2-Thiocarbene Complexes of Molybdenum and Tungsten  
 Abstract    The reaction o f dim ethyl(m ethylthio)sulfonium tetrafluoroborate [(CH-,)-,S-SCH3][BF4] with //;'-cyclopentadienyl(dicarbonyl)carbyne com plexes o f molybdenum and tungsten Cp(CO)2M = C -R (M = M o. W; R = C H ,, C6H 5, C6H4C H 3) lc , 2 a ~ d results in an electrophilic attack o f the SCH, moiety at the metal carbon triple bond, providing orange to red, diam ag­ netic, cationic //--thiocarbene com plexes [Cp(CO):M = C(R)$CH,J[BF4] 3c, 4 a ~ d in high yields. The new com pounds were identified by X-ray structure analysis, N M R , IR and mass spectra. 
  Reference    Z. Naturforsch. 45b, 921 (1990); eingegangen am 9. November 1989 
  Published    1990 
  Keywords    Cationic ^-T hiocarbene Complexes, M olybdenum Tungsten, X-Ray 
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 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-0921.pdf 
 Identifier    ZNB-1990-45b-0921 
 Volume    45 
173Author    N. Orbert, K. Uhna, Michael Schulten3, Roland Boeseb, Dieter BläserbRequires cookie*
 Title    Synthese und Struktur von l,3?6,8-Tetra-terf-butylcarbazol  
 Abstract    The synthesis o f 1,3,6,8-tetra-/er/-butylcarbazole (2) by the reaction o f carbazole with tert-butyl chloride in the presence o f aluminium chloride is reported. The X-ray structures o f 2 and its diethyl ether adduct are compared. The gap formed by the ter/-butyl groups in 1,8-position has been calculated and compared with that o f the supermesithyl substituent. 
  Reference    Z. Naturforsch. 46b, 1503—1508 (1991); eingegangen am 4. April 1991 
  Published    1991 
  Keywords    l, 3, 6, 8-Tetra-?m -butylcarbazole, Synthesis, X-Ray 
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 TEI-XML for    default:Reihe_B/46/ZNB-1991-46b-1503.pdf 
 Identifier    ZNB-1991-46b-1503 
 Volume    46 
174Author    Dieter Sellmann, Stefan Fünfgelder, Falk Knoch, M. Atthias, MollRequires cookie*
 Title    Übergangsmetallkomplexe mit Schwefelliganden, LXXVI* Redox-und Additionsreaktionen von Nickelkomplexen mehrzähniger Thioether-Thiolat-Liganden. Röntgenstrukturanalysen von (N M e4)2 [Ni('S2')2 l und INi('S4-C 3 /)(PM e3)]** Transition M etal Complexes with Sulfur Ligands, LXXVI* Redox and Addition Reactions of Nickel Complexes with M ultidentate Thioether-Thiolato Ligands. X-Ray Structure Determinations of (N M e ^ fN ^ 'S ^ j] and [Ni('S4-C 3')(PM e3)]*  
 Abstract    In order to elucidate specific properties o f nickel sulfur com plexes, redox and addition-elim-ination reactions o f [Ni('OS4')]2, [N i('N HS4')]2, [Ni('S5')], [Ni('S4-C 5')]2 and [Ni('S4-C 3')] were investigated ('OS4'2-= 2,2'-bis(2-m ercaptophenylthio)diethylether(2-), 'N HS4'2~ = 2,2'-bis(2-m ercaptophenylthio)diethylam ine(2-), 'S5'2-= 2,2'-bis(2-mercaptophenylthio)diethylsul-fid e (2 -), 'S4-C 5'2-= 1,5-bis(2-m ercaptophenylthio)pentane(2-), 'S4-C 3'2-= l,3-bis(2-m er-captophenylthio)propane(2-)). Cyclovoltammetry proves the complexes to be redox inactive between -1 .4 and +0.8 V vs. N H E. A bove +0.8 V the complexes are irreversibly oxidized, below -1 , 4 V desalkylation takes place and [Ni('S2')2]2" is formed. An X-ray structure analysis was carried out o f (N M e4)2[Ni('S2'):>], which shows a planar anion with the Ni center in a nearly perfect square planar coordination. Distances and angles are practically identical to those in the [Ni('S2')2] m onoanion. The complexes coordinate only phosphines as coligands, but thioether donors simulta­ neously decoordinate and, dependant o f reaction temperature, m ono-or trisphosphine com ­ plexes are formed. [Ni('S4-C 3')(PM e3)] was characterized by X-ray structure analysis and ex­ hibits a square pyramidal coordination geometry. 
  Reference    Z. Naturforsch. 46b, 1601—1608 (1991); eingegangen am 13. Mai 1991 
  Published    1991 
  Keywords    Nickel Sulfur Complexes, Redox and Addition Reactions, X-Ray 
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 TEI-XML for    default:Reihe_B/46/ZNB-1991-46b-1601.pdf 
 Identifier    ZNB-1991-46b-1601 
 Volume    46 
175Author    Peer Berges, Volker Mansei, G. Ünter KlarRequires cookie*
 Title    Elementorganische Verbindungen mit ö-Phenylenresten, XXIII [1]  
 Abstract ethoxy-5,7,12,14-tetrathia-5,7,12,14-tetrahydropentacen -2.3-Dichlor-5,6-dicyan-l,4-benzochinon (1/2) Organometalloidal Com pounds with o-Phenylene Substituents, XXIII [1],7,12,14-tetrathia-5,7,12,14-tetrahydropentacene -2.3-Dichloro-5,6-dicyano-1,4-benzoquinone (1 /2) The title com pound is prepared by com bining hot solutions o f the components. X-ray anal­ ysis shows hexam ethoxytetrathiatetrahydropentacene to act as a bifunctional donor, each o f its dimethoxybis(organylthio)benzene units being in contact with a dichlorodicyanoquinone molecule. In the crystal stacks o f the type D A 2 ,D A 2, with an alternating arrangement o f d o­ nor and acceptor molecules are formed. In the com plex the donor has a m -conform ation (boat form) in contrast to its pure form where the /ra/w-conformation (chair form) is found. 
  Reference    Z. Naturforsch. 47b, 211 (1992); eingegangen am 26. August 1991 
  Published    1992 
  Keywords    Hexamethoxytetrathiatetrahydropentacene, Bifunctional D onor, D ichlorodicyanoquinone, Crystal Structure, X-Ray 
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 TEI-XML for    default:Reihe_B/47/ZNB-1992-47b-0211.pdf 
 Identifier    ZNB-1992-47b-0211 
 Volume    47 
176Author    R. Castro, M.L D Urá, J.A G Arcía-Vázquez, J. Rom, A. Sousa, A. C. Astiñeiras, W. Hiller, J. SträhleRequires cookie*
 Title    Direct Electrochemical Synthesis of Pyrimidine-2-thionato Complexes of Zinc(II) and Cadmium(II): The Crystal Structure of (l,10-Phenanthroline)bis(pyrimidine-2-thionato)cadmium(II)  
 Abstract    Zn(pymt)2 and Cd(pymt)2 complexes have been obtained by electrochemical oxidation o f anodic zinc or cadmium in acetonitrile solutions o f pyrimidine-2-thione (Hpymt). W hen 2,2'-bipyridine (bipy) or 1,10-phenanthroline (phen) was added to the electrochemical cell, the ad-ducts [M (pymt)2(bipy)], or [M(pymt)2(phen)] (M = Zn or Cd) were obtained. Crystals o f [Cd(pymt)2phen] are orthorhombic, with a = 9.882(2), b = 12.491(1), c = 16.513(2)A, space group P 2,2,2, and Z = 4. The cadmium atom has distorted octahedral geometry, and one ni­ trogen atom o f each pyrimidine-2-thiolato ligand is not coordinated. 
  Reference    Z. Naturforsch. 47b, 1067 (1992); received January 27 1992 
  Published    1992 
  Keywords    X -Ray, Cadmium Complexes, Pyrimidine-2-thione, Zinc Complexes 
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 TEI-XML for    default:Reihe_B/47/ZNB-1992-47b-1067.pdf 
 Identifier    ZNB-1992-47b-1067 
 Volume    47 
177Author    Hans Schum, Gert Adm, PaulT. BeurskensbRequires cookie*
 Title    Zum Koordinationsverhalten von Alkinen gegenüber dem [C5H5(P(OCH3)3)2Fe]+-Fragment: Bildung und Struktur carbonylfreier Halbsandwichkomplexe mit Alkin-und Vinylidenliganden Coordination Properties o f Alkynes towards the [C5H 5Fe(P(O C H 3)3)2]+ Fragment: Form ation and Structure o f Carbonylfree Halfsandwich Complexes with Alkyne and Vinylidene Ligands  
 Abstract    The alkyne containing halfsandwich complexes [C5H 5(P(O CH 3)3)2Fe(HC = CC6H 5)]PF6 (Ilia) and [C5H 5(P (0C H 3)3)2Fe(C H 30 2CC = C C 0 2C H 3)]PF6 (Illb) are accessible by thermal acetonitrile substitution from [C5H 5(P(OCH3)3)2Fe(N C C H 3)]PF6 (I) in the presence o f the al­ kyne. U pon standing in solution, Ilia isomerizes to give the isomeric phenylvinylidene com ­ plex [C5H 5(P(O CH 3)3)2Fe(C = C(C6H5)H)]PF6 (IV). The spectroscopic data are presented to­ gether with a discussion o f the X-ray structure determinations o f III b and IV. 
  Reference    Z. Naturforsch. 47b, 1125—1133 (1992); eingegangen am 22. Januar 1992 
  Published    1992 
  Keywords    C yclopentadienyliron-Phosphite Complexes, Alkyne Complexes, Alkyne-Vinylidene Isomerisation, X-Ray 
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 TEI-XML for    default:Reihe_B/47/ZNB-1992-47b-1125.pdf 
 Identifier    ZNB-1992-47b-1125 
 Volume    47 
178Author    JörgN. Euhausen+, Karl-Ludwig Stork, ElisabethP. Otthoff, W. Olfgang, TremelRequires cookie*
 Title    Synthese und Struktur von Nb0 89Fe0 93Te2 und Ta0,77Fe0990Te2 Synthesis and Structure of N b0 89Fe093Te2 and Ta077Fe090Te2  
 Abstract    N b0g9Fe093Te2 and T a0 77Fe0 90Te2 were prepared by chemical transport reactions. The crys­ tal structures of both com pounds were determined using X-ray single crystal methods. The structures of the layer com pounds N b0g9Fe093Te2 (P mna, Z = 2, a = 7.951(1) Ä, b = 7.241(1) Ä, c = 6.233(1) Ä) and T a077Fe0 90Te2 (P mna, Z = 2, a = 7.890(2) Ä, b = 7.252(2) Ä, c = 6.192(1) Ä) are based on a hexagonal close packing of Te atoms. Approximately one-half of the octahedral holes in this packing are occupied by N b (Ta) atoms, about one-quarter of the tetrahedral holes are occupied by Fe atoms. The relationship to the NiAs structure type is discussed. 
  Reference    Z. Naturforsch. 47b, 1203—1212 (1992); eingegangen am 21. April 1992 
  Published    1992 
  Keywords    Synthesis, X-Ray, M etal-Rich Layer Compounds, Early Transition Metal Tellurides 
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 TEI-XML for    default:Reihe_B/47/ZNB-1992-47b-1203.pdf 
 Identifier    ZNB-1992-47b-1203 
 Volume    47 
179Author    Harald Maelger, Falk Olbrich, Jürgen Kopf, Dirk Abein, Erwin WeissRequires cookie*
 Title    Synthese und Struktur der Basenaddukte von Kupfer(I)-Halogeniden mit Dimethylsulfid und Tetrahydrothiophen Synthesis and Crystal Structure of Lewis Base Adducts of Copper(I)-Halides with Dimethylsulfide and Tetrahydrothiophene  
 Abstract    Copper complexes o f the general formula [(CuX)a(L)J" with L = tetrahydrothiophene (THT) or dimethylsulfide (D M S) and X = Cl, Br or I are formed by direct reaction o f copper(I)halides with the corresponding ligands. All com pounds have been characterized by 
  Reference    Z. Naturforsch. 47b, 1276—1280 (1992); eingegangen am 20. Februar 1992 
  Published    1992 
  Keywords    X-Ray, Lewis Base Adducts, Copper(I)-Halides, Thioethers, Synthesis 
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 TEI-XML for    default:Reihe_B/47/ZNB-1992-47b-1276.pdf 
 Identifier    ZNB-1992-47b-1276 
 Volume    47 
180Author    Jörg Münzenberg, HerbertW. Roesky, M. Athias Noltemeyer, Susanne Besser, Regine Herbst-IrmerRequires cookie*
 Title    Synthese und struktureller Vergleich einiger TeIlur(IV)-Iminate Syntheses and Structural Com parison of Some Tellurium(IV) Iminates  
 Abstract    T e -N compounds with Ph;SN and Ph2CN ligands were synthesized by treating TeCl4, TeF4, and ArTeCl3 (Ar = p-M eO C6H4) with the corresponding silylated ligand precursors 1 and 5. The l25Te N M R spectra of the com pounds Cl3TeN SPh2 2, Cl2Te(NSPh2)2 3, ArTe(Cl2)NSPh2 4, Cl2Te(N CPh2)2 6, F2Te(N CPh2)2 7 and ArTe(Cl2)N C Ph2 8 have been deter­ mined. The X-ray structures of the com pounds 2 -Pyridin, 3 and 8 show Cl-bridged dimers in the solid state, while 6 and 7*0.5 MeCN are monomeric. In the diphenylsulfiminates 2-Pyridin and 3 short T e -N bond distances are found. 
  Reference    Z. Naturforsch. 48b, 199—208 (1993); eingegangen am 3. September 1992 
  Published    1993 
  Keywords    Diphenylsulfiminates, Diphenylketiminates, X-Ray, , 25Te N M R Spectra 
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 TEI-XML for    default:Reihe_B/48/ZNB-1993-48b-0199.pdf 
 Identifier    ZNB-1993-48b-0199 
 Volume    48