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1990 (280)
21Author    Requires cookie*
 Title    Hochdrucksynthese und Kristallstruktur von Kalium-und Rubidiumdiwolframat  
 Abstract    (VI), K2W 20 7 und Rb2W20 7 High-Pressure Synthesis and Crystal Structure o f Potassium and Rubidium Ditungstate(VI), K 2W20 7 und R b2W 20 7 
  Reference    (Z. Naturforsch. 45b, 107 [1990]) 
  Published    1990 
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 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-0107.pdf 
 Identifier    ZNB-1990-45b-0107 
 Volume    45 
22Author    Axel Gudat, Sabine Haag, R. Üdiger Kniep, Albrecht RabenauRequires cookie*
 Title    Ternäre Nitride des Lithiums mit den Elementen Cr, Mo und W Ternary Lithium Nitrides with Elements Cr, Mo and W  
 Abstract    M a x -P la n c k -In s titu t fü r F e s tk ö rp e rfo rs c h u n g , H e ise n b e rg stra ß e 1, D -7 0 0 0 S tu ttg a rt 
  Reference    (Z. Naturforsch. 45b, 111 [1990]) 
  Published    1990 
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 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-0111.pdf 
 Identifier    ZNB-1990-45b-0111 
 Volume    45 
23Author    Requires cookie*
 Title    Zur Reaktion von Ni8-Clustern mit Natriumamaigam  
 Abstract    Die Kristallstrukturen von {|N i8Hg(PPh)6(PPh3)4|-|N i8(PPh)6(PPh3)4|} und |Ni8S 6(PPh3)s| 
  Reference    (Z. Naturforsch. 45b, 121 [1990]) 
  Published    1990 
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 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-0121.pdf 
 Identifier    ZNB-1990-45b-0121 
 Volume    45 
24Author    Requires cookie*
 Title    Zur Reaktion von |MC12(PR 3)2]  
 Abstract    (M = Ni, Pd) mit E(SiM e3)2 (E = S, Se) Die Kristallstrukturen von |N i3S 2Cl2(PPh3)4], |Pd3S2Cl2(PPh3)4|, INi3Se2(SeSiM e3)2(P(C2H 4Ph)3)4l und [Pd3Se2(SeSiM e3)2(PPh3)4| 
  Reference    (Z. Naturforsch. 45b, 127 [1990]) 
  Published    1990 
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 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-0127.pdf 
 Identifier    ZNB-1990-45b-0127 
 Volume    45 
25Author    F. E. Kkehardt Hahn, Bernd Schneider, Friedrich-Wilhelm ReierRequires cookie*
 Title    Synthese und Kristallstrukturen von Dimethylgalliumdiphenylphosphinat und Diethylindiumdiphenylphosphinat Synthesis and Crystal Structures of Dimethylgalliumdiphenylphosphinate and Diethylindiumdiphenylphosphinate  
 Abstract    In s titu t fü r D ia g n o s tik fo rs c h u n g a n d e r F U B erlin u n d In s titu t fü r A n o rg a n isc h e u n d A n a ly tisc h e C h e m ie d e r T e c h n isc h e n U n iv e rsitä t B erlin, S tra ß e des 17. J u n i 
  Reference    Z. Naturforsch. 45b, 134 (1990) 
  Published    1990 
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 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-0134.pdf 
 Identifier    ZNB-1990-45b-0134 
 Volume    45 
26Author    Requires cookie*
 Title    Darstellung und Kristallstruktur zweier Polytelluride mit großen mehrfach geladenen Kationen Determ ination and Crystal Structure of Two Polytellurides with Large Double and Triple Charged Cations  
 Abstract    linkham m era und P. Böttcherb * a I n s titu t fü r A n o rg a n isc h e C h em ie, U n iv e rs itä t S tu ttg a rt, P fa ffe n w a ld rin g 55, D -7000 S tu ttg a r t 80 b I n s titu t fü r A n o rg a n isc h e C h e m ie (II), H e in ric h -H e in e -U n iv e rs itä t, U n iv e rs itä ts s tra ß e 1, D -4000 D ü s s e ld o r f 1 
  Reference    Z. Naturforsch. 45b, 141 (1990) 
  Published    1990 
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 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-0141.pdf 
 Identifier    ZNB-1990-45b-0141 
 Volume    45 
27Author    Joseph Grobe, M. Arianne Hegemann, Duc Le VanRequires cookie*
 Title    Reaktive E=C(p-p)/r-System e, XX [1]  
 Abstract    Synthese und Reaktivität der konstitutionsisomeren Perfluorphosphaalkene F3C P=C (F)C F3 und F5C2P = C F 2 Reactive E = C(p-p)7r-Systems, XX [1] Synthesis and Reactivity of the Isomeric Perfluorophosphaalkenes F 3CP = C (F)C F3 and F 5C2P = C F 2 
  Reference    Z. Naturforsch. 45b, 148 (1990) 
  Published    1990 
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 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-0148.pdf 
 Identifier    ZNB-1990-45b-0148 
 Volume    45 
28Author    Eberhard Herdtwecka, Jens Graulichb, Dietrich BabelRequires cookie*
 Title    Die Kettenstrukturen der ternären Eisen(III)fluoride Rb2FeF5 und (CH3N H ,)2FeF5 The Chain Structures of the Ternary Iron(III) Fluorides Rb2FeF 5 and (CH3N H 3)2F eF 5  
 Abstract    Crystal Structure, Chain. Pentafluoroferrate(III), Hydrogen Bonding Single crystals of the orthorhombic compounds Rb,FeF5 {a = 756.5(1), b = 581.0(1), c = 
  Reference    Z. Naturforsch. 45b, 161—169 (1990); eingegangen am 11. September 1989 
  Published    1990 
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 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-0161.pdf 
 Identifier    ZNB-1990-45b-0161 
 Volume    45 
29Author    Hansjörg GrützmRequires cookie*
 Title    Spaltung der Ylid-Bindung in Phosphor-Yliden: Photolyse von thiophosphoranylsubstituierten (Triphenylphosphoranyliden)methanen Cleavage of Ylidic Bonds in Phosphorus Ylides: Photolysis of Thiophosphoranyl-Substituted (Triphenylphosphoranylidene)methanes  
 Abstract    The thiophosphoranyl-substituted (triphenylphosphoranylidene)methanes 1, 6 a, b are cleaved photolytically (/ > 300 nm, 3 d, 0 °C) to yield triphenylphosphane and the thio-aza-phosphetanes 3 and 8 a, b, b', respectively. The formation of these heterocycles is explained in­ voking insertion o f the carbenes 2 and 7 a, b into the methine CH bond of one of the isopropyl groups. If 6a is irradiated for 16 h in the presence of the phosphanes P(NM e2)3, P(OMe)3 or P("Bu)3, the new ylides 9 a, b, c are obtained along with small quantities of 8 a. These results indicate a cleavage of the ylidic bond in 1 and 6a, b. The failure of attempted cyclopropana-tion reactions of olefins as well as the absence of the expected product o f a 1,2-H shift, 10, in the case of the photolysis of 6b leave doubts as to the occurrence of free carbenes. 
  Reference    Z. Naturforsch. 45b, 170—174 (1990); eingegangen am 26. Mai/23. August 1989 
  Published    1990 
  Keywords    Phosphorus Ylides, Photolysis, N M R Spectra, MS Spectra 
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 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-0170.pdf 
 Identifier    ZNB-1990-45b-0170 
 Volume    45 
30Author    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 
31Author    A. Heinrich, H.-L Keller, W. PreetzRequires cookie*
 Title    Oxidationsreaktionen an X"B6H6_W 2 , X = Cl  
 Abstract    , Br, I; n = 1 -6 und Kristallstrukturen von [(/i-C4H9)4N]B6I6 und |(/i-C4H9)4N|2B616 Oxidation Reactions on X"B(1H6_"2 , X = Cl, Br, I; n = 1 -6 , and Crystal Structures of [(a/-C4H9)4N]B6I6 and [(/?-C4H9)4N]2B6I6 Hexahalogenohexaborates(1 -) , Hexahalogenohexaborates(2-), Crystal Structure By cyclic voltammetry investigations in acetonitrile solution it has been shown, that the ha-logenohydrohexaborates X"B6H6_n2~, X = Cl, Br, I; n = 1 -6, undergo a one-electron oxida­ tion to form the corresponding radical anions. The reactions are completely reversible only for 
  Reference    Z. Naturforsch. 45b, 184—190 (1990); eingegangen am 27. Juni/28. September 1989 
  Published    1990 
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 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-0184.pdf 
 Identifier    ZNB-1990-45b-0184 
 Volume    45 
32Author    Fritz Preuss, Harald Becker, Thom As WielandRequires cookie*
 Title    terf-Butylimino-cyclopentadienyl-aIkylvanadium(V)-Verbindungen Darstellung und NMR-spektroskopische Untersuchungen ter/-Butylimino-cyclopentadienyl-alkylvanadium(V) Com pounds Synthesis and NM R Spectroscopic Studies  
  Reference    Z. Naturforsch. 45b, 191—198 (1990); eingegangen am 4. Juli 1989 
  Published    1990 
  Keywords    Cyclopentadienyl-alkylvanadium(V) Compounds, Preparation, 'H N M R Spectra, 51V N M R Spectra 
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 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-0191.pdf 
 Identifier    ZNB-1990-45b-0191 
 Volume    45 
33Author    Th Fetzer, A. Lentz, T. Debaerdemaeker, O. Abou-, El-W AfaRequires cookie*
 Title    Einkristallzüchtung und Röntgenstrukturanalyse des polymeren 1:1-Komplexes zwischen CuCl2 und Pyridazin Crystal Grow th in Gels and X-Ray Characterization of the Polymerie 1:1 -Complex of CuCl2 with Pyridazine  
 Abstract    Single crystals of Cu(pdz)Cl2 were grown by using gel methods with tetramethoxysilane as the gel-forming reagent. Thermal decomposition is interpreted. Crystal data for the com plex: monoclinic, space group C2/c with a -938.3(3) pm, b = 1242.9(3) pm, c = 675.7(4) pm, ß = 128.48(5)°. A crystal structure analysis reveals CuCl2 molecules connected by pyridazine in the form of zigzag-chains. Between these chains there are only Van-der-Waals-Interactions. 
  Reference    Z. Naturforsch. 45b, 199—202 (1990); eingegangen am 28. August 1989 
  Published    1990 
  Keywords    Pyridazine, Copper Complexes, Polymerie Complexes, Gel Crystallization 
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 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-0199.pdf 
 Identifier    ZNB-1990-45b-0199 
 Volume    45 
34Author    KlausP. Langhans, Othmar Stelzer, Jürgen Svara, Norbert WeferlingRequires cookie*
 Title    Synthese primärer und sekundärer Phosphane durch selektive Alkylierung von PH3 unter Phasentransferbedingungen Synthesis of Primary and Secondary Phosphines by Selective Alkylation of PH3 under Phase Transfer Conditions  
 Abstract    Primary phosphines, RPH^, may be synthesized selectively by alkylation of phosphine, PH3, with alkyl halides RX (R = Me, Et, «-Bu, 2-Bu, CI6H33, CH2= C H -C H 2, P h -C H 2, 2-P y-C H 2-C H 2; X = Cl, Br) and concentrated aqueous KOH as auxilliary base in dimethylsulfoxide as a solvent or in two phase systems employing phase transfer catalysts. Under more rigorous conditions second­ ary phosphines R2PH (R = Me, n-Bu, CH2=CH —CH2) are also accessible in good yields. Using l,3-dibromo(chloro)-propane or -butane diprimary phosphines H2P -(C H 2)2—C H R -P H 2 (R = H, Me) are obtained, while 1,4-dibromopentane in a high yield cyclization reaction leads to 2-methyl-phospholane (12) with a chiral C-atom in a-position. 
  Reference    Z. Naturforsch. 45b, 203—211 (1990); eingegangen am 9. August 1989 
  Published    1990 
  Keywords    Phosphine PH, Selective Alkylation, Primary and Secondary Phosphines, Phase Transfer Catalysis, DMSO 
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 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-0203.pdf 
 Identifier    ZNB-1990-45b-0203 
 Volume    45 
35Author    Heinrich Lang+, Dietm Ar SeyferthRequires cookie*
 Title    Synthese und Reaktivität von Alkinyl-substituierten Titanocen-Komplexen Synthesis and Reactivity of Alkyne Substituted Titanocene Complexes  
 Abstract    Alkynyltitanocene Chlorides, Dialkynyltitanocene Derivatives (//5-C5H 5)2TiCl2 (la) reacts with one equivalent of L i-C = C ~ S i(C H 3)3 to yield the mono alkynyl-substituted titanocene complex (^5-C5H 5)2T i(C l)[C =C -Si(C H 3)3] (2). The reaction of 2 with another equivalent of L i-C = C ~ S i(C H 3)3 gives the disubstituted compound (V5-C5H 5)2T i[C = C -S i(C H 3)3]2(3f). In general, complexes of the type (V-C5H4R)-,T i(C =C -R ')2 (R = H, C H 3, Si(CH3)3; R' = C6H 5, C2H 5, "C3H 7, "C4Hq, 'C4H9, Si(CH3)3), 3 -5 , can be prepared by the reaction of C5H4R)2TiCl2 (1) and two moles of E -C = C -R ' (E = BrMg, Na, Li; R, R' = see above) to give the compounds 3 -5 in yields of up to 95%. The reaction of 2 -5 with X 2 or HX yields the appropriate compounds (//5-C5H4R)2TiX2 (X = F, Cl, Br) and H -C = C -R ' o r X -C = C -R ' . 
  Reference    Z. Naturforsch. 45b, 212—220 (1990); eingegangen am 4. Oktober 1989 
  Published    1990 
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 Identifier    ZNB-1990-45b-0212 
 Volume    45 
36Author    Bernd Bachmann, Gerhard Baum+, JürgenH. Eck, Werner Massa+, Bernd ZieglerRequires cookie*
 Title    Cp'— X —Cp'-überbrückte |i-Cyclooctatetraen-und -trien-Zweikernkomplexe des Chroms sowie Vanadiums (Cp' = i/5-C5H4, X = CH2, SiMe2, GeMe2) Cooperative Effect in 7r-Ligand-Bridged Binuclear Complexes [1]  
 Abstract    VII. Kooperative Wirkung in Jt-Ligand-verbrückten Zweikernkomplexen [1] Binuclear C p '-X -C p '-B rid g ed «-Cyclooctatetraene and -triene Complexes of Chromium as well as Vanadium (Cp' = //5-C5H4, X = CH2, SiMe2, GeMe:) VII. .«-C yclooctatetraene, ^-C yclooctatriene, V anadocenophanes, Fluxional Behaviour. Metal Metal Interactions Synfacial binuclear ,«-Cot com plexes o f the general formula X (C p'M)2—M-Cot with Cp' —X —Cp' as an additional bridging group (M = V , Cr; Cot — cyclooctatetraene) can be 
  Reference    Z. Naturforsch. 45b, 221 (1990); eingegangen am 24. Juli 1989 
  Published    1990 
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 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-0221.pdf 
 Identifier    ZNB-1990-45b-0221 
 Volume    45 
37Author    WolfdieterA. Schenk, Ute Karl, MichaelR H Orn, Stefan MüssigRequires cookie*
 Title    Schwefelmonoxid als Ligand in kationischen Halbsandwich-Komplexen des Eisens und Rutheniums [1] Sulfur Monoxide as Ligand in Cationic Halfsandwich Type Complexes of Iron and Ruthenium [ 1 ]  
 Abstract    A n organ isch e C h em ie der U n iversität W ürzburg, Am H ubland, D -8700 W ürzburg 
  Reference    Z. Naturforsch. 45b, 239 (1990) 
  Published    1990 
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 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-0239.pdf 
 Identifier    ZNB-1990-45b-0239 
 Volume    45 
38Author    Requires cookie*
 Title    Eisen-und Cobaltkomplexe  
 Abstract    mit Schwefelliganden: Darstellung und Kristallstrukturen von [Me4N][FeCl{S2P(O M e)2} 2], [Me4N][CoCl{S2P(O M e)2}2|,[E t4N][FeCl{S2P(p-C6H 4M e)2}2], IEt4N]2IFeCl{S2P S(O M e)}2] und IFe{S2P(O M e)2}3] 
  Reference    Z. Naturforsch. 45b, 245 (1990) 
  Published    1990 
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 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-0245.pdf 
 Identifier    ZNB-1990-45b-0245 
 Volume    45 
39Author    Martin Feigel, Gerhard Lugert, Javier Manero, Matthias BremerRequires cookie*
 Title    Konformation von Anthranilsäurepeptiden, 3 [1]: Konformationen kleiner Anthranilsäure-Prolinpeptide im Kristall, in Lösung und eine semiempirische (AM I) Beschreibung der Prolin-Ramachandran-Hyperflächen Conformation of Anthranilic Acid Peptides, 3 [1]: Conformation of Small Anthranilic-Acid-Proline-Peptides in Crystal, in Solution and a Semi-empirical (A M I) Description of the Proline-Ramachandran Maps  
 Abstract    X-R ay, Peptide C onform ations, Proline, A M I Starting from rm -B utyloxycarbonyl(B O C)-A nthranilic-A cid(A bz) (1), BO C -A bz-P roline-M ethyl-Ester (2) is synthesized. The crystal structure of both com pounds are discussed. The conform ational features o f the crystal structures of 2 are compared with the conform ation in 
  Reference    Z. Naturforsch. 45b, 258 (1990); eingegangen am 7. August 1989 
  Published    1990 
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 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-0258.pdf 
 Identifier    ZNB-1990-45b-0258 
 Volume    45 
40Author    J. V. IiRequires cookie*
 Title    /C^ \ R \ 0 \ A  
  Reference    Z. Naturforsch. 45b, 267 (1990) 
  Published    1990 
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 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-0267_n.pdf 
 Identifier    ZNB-1990-45b-0267_n 
 Volume    45 
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