Go toArchive
Browse byFacets
Bookbag ( 0 )
Facet   section ZfN Section B:Volume 045  [X]
Results  280 Items
Sorted by   
Publication Year
1990 (280)
121Author    Georg Ingram, Peter Jaitner, KarlEberhard SchwarzhansRequires cookie*
 Title    Synthese und Charakterisierung ruthenocen-und osmocenhaltiger Hetero-Oligometallocene Synthesis and Characterization of Hetero-Oligometallocenes Containing Ruthenocene and Osmocene  
 Abstract    Improved syntheses o f ruthenocene (Rue) and osm ocene (Osc) are described. These lithiated metallocenes (R ucLi,_3 and OscLi,_3) react with cobaltocenium-hexafluorophosphate (C oc+PF6~) to give the corresponding oligom etallocenes C oc+-R u c P F 6~ (1), l,l'-(C o c +)2-Ruc(PF6)2 (2), C oc+-O sc P F 6" (4), and l,l'-(C o c +)2-O sc (P F 6)2 (5). The products were charac­ terized by IR, MS, N M R and elemental analysis. 
  Reference    Z. Naturforsch. 45b, 781 (1990); eingegangen am 15. Dezember 1989 
  Published    1990 
  Keywords    Hetero-Oligometallocenes, Ruthenocene, Osmocene, Synthesis 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-0781.pdf 
 Identifier    ZNB-1990-45b-0781 
 Volume    45 
122Author    Joseph Grobe, Helm Ut Schröder, N. Orbert AunerRequires cookie*
 Title    Silaethene, XIV [1]  
 Abstract    Bildung und Reaktivität von l,l-Di-terf-butoxy-2-neopentylsilaethen ('BuO)2Si=C H N p Silaethenes, XIV [1] Form ation and Reactivity o f l,l-D i-ter/-butoxy-2-neopentyl Silaethene ('BuO)2Si = C H N p Generation o f ('BuO)2Si = C H N p, Reaction in Solution, Mechanisms The reaction o f ('BuO)2Si(Cl)Vi (3) with Li'Bu has been investigated in pentane or toluene (non-polar) and mixtures o f pentane or toluene with TH F (polar), respectively, in order to gain information about the influence o f substituents and the polarity o f the solvent on the reaction mechanism. In accord with earlier results, using M e2Si(Cl)Vi (1) [8] or 'Bu2Si(Cl)Vi (2) [5] as precursors, the course o f reaction in non-polar solvents is dominated by 1,2-elimination o f LiCl from the a-lithio intermediate R2Si(Cl)C H (Li)CH 2H'Bu yielding l,l,3,3-tetra(terf-butoxy)-l,3-disilacyclobutane (4) via the corresponding silaethene derivative. On the other hand, the presence o f small amounts (5% by volum e) o f TH F in the solvent system leads to a considerable decrease in the yield o f 4 and favours secondary reactions o f the a-lithio deriva­ tive by solvate formation giving chain com pounds like ('BuO)-,Si(X)CH2CH-/Bu (X = Cl, 'Bu) and ('B u 0)2Si(CH = C H 'B u)Si(0'B u)2C H 2C H 2'Bu (5b). M N D O calculations on the model com pounds Me-,Si = C H 2, Me-,Si = C H , • O H 2 and (H O)2Si = CH2, (H O)2Si = C H, O H 2, respec­ tively, show that for the gas phase molecules the form ation o f the dimethyl derivatives from the corresponding a-lithio intermediate is less endothermic than that o f the dihydroxy ana­ logues. Therefore, the differences observed in the product pattern o f the reactions o f 1 and 3, respectively, especially in polar systems, can only be explained by a combination o f substituent and solvent effects on the kinetics. 
  Reference    Z. Naturforsch. 45b, 785—7 (1990); eingegangen am 27. Dezember 1989 
  Published    1990 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-0785.pdf 
 Identifier    ZNB-1990-45b-0785 
 Volume    45 
123Author    CorneliusG. Kreiter, Wolfgang Michels, Reiner ExnerRequires cookie*
 Title    Gehinderte Ligandbewegungen in Übergangsmetallkomplexen, XXXVII [1]: Photoreaktion von Dekacarbonyldirhenium mit Phenylallen Hindered Ligand M otions in Transition Metal Complexes, XXXVII [1]: Photoreaction of Decacarbonyldirhenium with Phenylallene  
 Abstract    Decacarbonyldirhenium (1) and phenylallene (2) form upon U V irradiation four dinuclear complexes: Decacarbonyl-//-^l:l-(3,4-diphenyl-1,5-hexadien-2,5-diyl)-dirhenium (3), ennea-carb on yl-//V :3-(3-phenyl-2-propen-l,2-diyl)-dirhenium (4), octacarb on yl-//-h yd rid o-/iV 2-(3-phenyl-l,2-propadien-l-yl)-dirhenium (5) and octacarbonyl-/i-?72 2-(phenyl-l,2-propa-diene)-dirhenium (6). The thermolabile complex 4 looses CO and forms the phenylallene bridged compound 6. Similarly 5 is rearranged to 6 by transfer o f the hydrido ligand to the 3-phenyl-1,2-propadien-l-yl bridge. The formation o f 3 and 4 can be rationalized via pentacar-bonyl-phenylpropenediyl-rhenium radicals which dimerize to give 3 or add pentacarbonyl-rhenium radicals, loose CO and form 4. The crystal and molecular structure o f 3 was deter­ mined by X-ray structure analysis. In the solid state the molecule is present in the ± ap confor­ mation. In solution at 233 K the ± a p , +sc, and -s c conform ations are equally populated. By a hindered rotation around a CC single bond, the three conformers are interconverted with a rotation barrier o f J G * 25g = 52.3 ± 1 k J -m o L 1. 
  Reference    Z. Naturforsch. 45b, 793—8 (1990); eingegangen am 3. Januar 1990 
  Published    1990 
  Keywords    Decacarbonyldirhenium, Photoreaction, Phenylallene, Ligand Properties 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-0793.pdf 
 Identifier    ZNB-1990-45b-0793 
 Volume    45 
124Author    Dieter Sellmann, O. Laf Käppler, Falk Knoch, M. Atthias, MollRequires cookie*
 Title    Übergangsmetallkomplexe mit Schwefelliganden, XLIX* Außergewöhnliche Säure-Basenreaktionen an niedervalenten Ru-Nitrosyl  
 Abstract    Komplexen mit dem Thiolat-amin-Liganden 'S2N2HX '2_ (x = 1,2) und Mo-Komplexe mit den Liganden S2N2H2'2_ und /buS2N 2H 2'2-**, Synthese, Struktur und Reaktionen Transition M etal Complexes with Sulfur Ligands, XLIX* U nusual Acid Base Reactions of Low Valence Ruthenium Nitrosyl Complexes with the Thiolate-amine Ligands 'S ^ l^ H /2-(jc = 1,2) and M olybdenum Complexes with the Ligands 'S2N 2H 2'2-and 'buS2N 2H 2'2"**, Syntheses, Structure and Reactions Nitrosyl Thiolato Amine Complexes o f Ru and M o, Synthesis, Properties, X -R ay In order to find com plexes suited as model compounds for oxidoreductases catalyzing reac­ tions o f the biological nitrogen cycle, Ru-and M o-nitrosyl complexes with the 'S2N 2H 2'2~ and 'buS2N 2H 2'2~** ligand were synthesized. The reaction o f [R u(N O)(PPh3),C l3] with Li2-' S 2N 2H 2' yields the binuclear [Ru(NO)('S2N 2H ')]2 (1) and the mononuclear [R u(N O)(PPh3)('S2N 2H 2')]Cl (2). Form ation o f 1 is explained by HC1 and subsequent PPh3 elimination from 2; the coordi-natively unsaturated [R u(N O)('S2N 2H')] dimerize to give 1. 1 is also obtained a) when [R u(N O)2(PPh3)J is reacted with Li2-' S 2N 2H2', b) when 2 is treated with bases, e.g. N 2H 4, or c) when [Ru(NO)C1('S2N 2H 2')] is attempted to be recrystallized from D M SO or T H F /M eO H . The very labile [Ru(NO)C1('S2N 2H 2')] (5) forms when R u (N 0)C l3-3 H 20 is reacted with N a2-' S 2N 2H 2'. The structures o f 1 and 2 were determined by X-ray diffraction. They show six-coordinate R u11 centers with the thiolate S atom s in cis positions. The m ononuclear com plexes [R u(N O)(PM ePh2)('S2N 2H')] (3) and [R u(N O)(PM e3)('S2N 2H')] (4) were obtained by cleavage o f 1 with PM ePh2 or PM e3, respectively. The formally 14e configurated molybdenum chloro complexes [M oC l2('S2N 2H 2')] (6) and [M oC l2('buS2N 2H2')] (7) were obtained from the reaction o f [M oCl4(T H F)2] with 'S2N 2H 2'2~ and yields the cis configurated [M o(N O)2('S2N 2H 2')] (8) and [M o(N O)2('buS2N 2H2')] (9) respectively. 9 is also obtained from the reaction o f [M o(N O)2C12] with 'buFLS2N ,H ?'. [M o(NO)C13(C H 3CN),] and N a2-' S 2N ,H ,' react to give the M o111 com plex [M o(NO)Cl('S2N 2H 2')] (10). 
  Reference    Z. Naturforsch. 45b, 803 (1990); eingegangen am 6. Juni/18. September 1989 
  Published    1990 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-0803.pdf 
 Identifier    ZNB-1990-45b-0803 
 Volume    45 
125Author    Eva-M Aria Ehrenstorfer-Schäfers, N. Orbert Steiner, JaninaA. Ltm, Wolfgang BeckRequires cookie*
 Title    Metal Complexes of Biologically Important Ligands, LV [1] Binding of Steroidal Hormones through a-Amino Acid Ligands to Platinum(II) and Palladium(II)  
  Reference    Z. Naturforsch. 45b, 817 (1990) 
  Published    1990 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-0817.pdf 
 Identifier    ZNB-1990-45b-0817 
 Volume    45 
126Author    Sreelatha Channareddy, Gerald Linti, Heinrich NöthRequires cookie*
 Title    Contributions to the Chemistry of Boron, 204 [1] An Unusual [2+2]-Cycloaddition Reaction of Dicobalt Octacarbonyl  
  Reference    Z. Naturforsch. 45b, 828 (1990) 
  Published    1990 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-0828.pdf 
 Identifier    ZNB-1990-45b-0828 
 Volume    45 
127Author    Requires cookie*
 Title    /?-Acylvinyl-dicarbonyl-7^-cyclopentadienyl-eisen-Komplexe  
 Abstract    y?-Acylvinyl-dicarbonyl-7 5-cyclopentadienyl-iron Complexes R udolf Gom pper* und Eduard K ottm air In stitu t für O rganische C hem ie d er U n iv ersität M ünchen, K arlstraß e 23, D -8000 M ünchen 2 
  Reference    Z. Naturforsch. 45b, 833 (1990) 
  Published    1990 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-0833.pdf 
 Identifier    ZNB-1990-45b-0833 
 Volume    45 
128Author    N. Orbert, H. Ertkorn, F. Rank, H. KöhlerRequires cookie*
 Title    Bicyclo|3.2.1]octa-2,6-dienyllithium and -potassium Chemistry Solvation, Aggregation, and 119S n -7Li Coupling of Stannylated Derivatives  
  Reference    Z. Naturforsch. 45b, 848 (1990) 
  Published    1990 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-0848.pdf 
 Identifier    ZNB-1990-45b-0848 
 Volume    45 
129Author    J. O. Besenhard, H. P. Gansmann, H.Meyer Schering, A. G., G. Alvanotechnik, F. OrschungRequires cookie*
 Title    Bestimmung von Oberflächenoxiden auf Rußen durch potentiometrische Direkttitration in nichtwäßrigen Lösungsmitteln Determ ination of Surface Oxides on Carbon Blacks by Direct Potentiom etrie Titration in Non-Aqueous Solvents  
 Abstract    A norganisch-C hem isches In stitu t der U n iversität M ünster, W ilhelm -K lem m -Straße 8, D-4400 M ü n ster C arb o n Black, Surface Oxides, N on -A q u eo u s Solvents, P oten tio m etrie T itra tio n A n attem p t is m ade to q u antitatively determ ine acidic an d basic surface oxides on carb o n blacks and also to m o n ito r their acid and base strength d istrib u tio n by direct p o ten tio m etric titratio n s in non-aqueous m edia. In co n trast to direct titratio n procedures pro p o sed so far, o u r m eth o d allow s to distinguish clearly betw een several types o f acidic surface oxides o f different acid strength. T his is m ainly achieved by im provem ents o f the n o n -aq u eo u s titra tio n m edia. The to tal co n ten ts o f weakly and strongly acidic and also o f basic oxides determ ined by this very fast m eth o d is co m p arab le to results obtained by slow and laborious indirect titratio n s. 
  Reference    Z. Naturforsch. 45b, 857 (1990); eingegangen am 6. A pril 1990 
  Published    1990 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-0857.pdf 
 Identifier    ZNB-1990-45b-0857 
 Volume    45 
130Author    R.P M Üller3, J. Steinleb, H. P. BoehmRequires cookie*
 Title    Characterization of Photochemically or Electrochemically Reduced Blue Titanium Dioxide  
 Abstract    A n o rganische C hem ie d er U n iv ersität M ünchen, M eiserstraße 1, D-8000 M ünchen 2 
  Reference    Z. Naturforsch. 45b, 864 (1990) 
  Published    1990 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-0864.pdf 
 Identifier    ZNB-1990-45b-0864 
 Volume    45 
131Author    N. Orbert Sewald, Klaus BurgerRequires cookie*
 Title    ff-Trifluormethylsubstituierte or-Hydroxysäuren mit Alkinfunktionen in der Seitenkette a-Trifluorom ethyl Substituted a-H ydroxy Acids with Alkyne Functions in the Side Chain  
 Abstract    Trifluoromethyl Alkyne Hydroxy Acids, Trifluoro Pyruvates Trifluoromethyl substituted a-hydroxy acids with alkyne functions in the side chain are ob­ tained on reaction o f trifluoro pyruvates with alkynyl Grignard reagents and alkali metal salts o f alkynes, respectively. 
  Reference    Z. Naturforsch. 45b, 871—8 (1990); eingegangen am 16. Januar 1990 
  Published    1990 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-0871.pdf 
 Identifier    ZNB-1990-45b-0871 
 Volume    45 
132Author    WolfgangA H Errm Ann, JosefK. Felixberger, JosefG. Kuchler, Eberhardt HerdtweckRequires cookie*
 Title    Alkin-Komplexe des Rheniums in hohen Oxidationsstufen Alkyne Complexes of Rhenium in High Oxidation States  
 Abstract    The class o f ^-alkyne complexes o f metals in medium and high oxidation states has been extended by the type C H 3R e 0 2(R C = C R) (3a-i). Exchange o f alkyne for oxo ligands under reducing conditions has been employed as a new general synthesis. C om pounds 3 are thus ob­ tained by reaction o f methyltrioxorhenium(VII) (1) with the alkynes 2 a -i in the presence o f a ca. 1.1-fold molar amount o f polymer-bound triphenylphosphane as reducing agent ( 
  Reference    Z. Naturforsch. 45b, 876—8 (1990); eingegangen am 30. N ovem ber 1989 
  Published    1990 
  Keywords    M ethyloxorhenium Alkynes, Synthesis, Crystal Structures 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-0876.pdf 
 Identifier    ZNB-1990-45b-0876 
 Volume    45 
133Author    Michael Weis, FritzH. FrimmelRequires cookie*
 Title    Interaction between Monovalent and Multivalent M etals and Fulvic Acids A Streaming Current Detection Study  
 Abstract    The complexation reaction between metal cations o f different valence states (Al, Bi(III), Cr(III), Fe(III); Ca, Co(II), Cu(II), M n(II), N i(II), Pb(II), Zn; N a) and fulvic acids is investi­ gated by the streaming current detection technique. It can be shown that the metal com plexa­ tion capacity does not only depend on the nature o f the cation but also on the origin o f fulvic acids, which were isolated from anaerobic and aerobic landfill leachates. 
  Reference    Z. Naturforsch. 45b, 887—8 (1990); received December 15 1989 
  Published    1990 
  Keywords    Fulvic Acids, Metal Com plexation Capacity, Streaming Current D etection 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-0887.pdf 
 Identifier    ZNB-1990-45b-0887 
 Volume    45 
134Author    Irene Scheler, DietrichW. WabnerRequires cookie*
 Title    The Influence of High Concentrations of Fluoride on the Electrosynthesis of Peroxodisulfates at /?-Pb02 Anodes  
 Abstract    During electrolysis with /?-Pb02 anodes in acidic sulfate electrolytes high current efficiencies o f peroxodisulfate are obtained (60—70%) when high amounts o f fluoride (1 M o lT '1 to 3 M ol • I"1) are added to the electrolyte. This reaction is examined by means o f current efficien­ cy o f peroxodisulfate, rate o f ozone form ation, polarization curves, and impedance measure­ ments. The reason for the high current efficiencies is the formation o f fluorosulfonic acid in the electrolyte and its reaction with the OH-radical (from the discharge o f H 20) to form H S 0 4-radicals. 
  Reference    Z. Naturforsch. 45b, 892 (1990); received December 14 1989 
  Published    1990 
  Keywords    Peroxodisulfate, Lead-dioxide A nodes, Fluoride, Electrolysis, High Current Efficiencies 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-0892.pdf 
 Identifier    ZNB-1990-45b-0892 
 Volume    45 
135Author    Peter Hofmann, LuisA. Perez-M, M. Oya, E. Artin, O. Krause, G.Erhard Tto Kumberger, MüllerRequires cookie*
 Title    If^-Bis( Nickel(0)-01efin Complexes, Synthesis, Structure and Bonding, Bent d 10-M L2 Fragments  
 Abstract    di-r-butylphosphino)methanl(fra/is-stilben)nickel(0), Ni(dtbpm)(fra/is-PhCH=CHPh). Synthese und Molekülstruktur einer Vorstufe des 14-Elektronenfragments [Ni(dtbpm)] [?/2-Bis(di-r-butylphosphino)methane](/ra«5'-stilbene)nickel(0), Ni(dtbpm)(rram ,-PhCH = CHPh). Synthesis and M olecular Structure of a Precursor for the 14-Electron Fragm ent [Ni(dtbpm)] 
  Reference    Z. Naturforsch. 45b, 897—9 (1990); eingegangen am 12. Januar 1990 
  Published    1990 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-0897.pdf 
 Identifier    ZNB-1990-45b-0897 
 Volume    45 
136Author    N. Orbert Auner, Claudia SeidenschwarzRequires cookie*
 Title    Silaheterocyclen, VII Reaktionen des Dichlorneopentylsilaethens mit Aldehyden [ 1 ] Silaheterocycles, VII Reactions of Dichloroneopentylsilene with Aldehydes [1]  
 Abstract    Silaheterocycles, Reactions o f Cl2Si = CHCHTBu' with Aldehydes, Form ation o f Vinylsiloxanes D ichloroneopentylsilene, Cl2Si = C H C H 2Bu' (1), is produced from vinyltrichlorosilane (2) and LiBu' in «-pentane at -7 8 °C. The reactions o f 1 with aromatic aldehydes like benzalde-hyde and the 4-methoxy-or 4-fluoro-substituted derivatives, naphthalene-1-and -2-and 9-anthracenecarbaldehyde, furfurale and its S-analogous thiophene carbaldehyde yield 1,2-silaoxetanes by [2 + 2] cycloaddition with the carbonyl group. The same is true for the reactions o f 1 with pivaline-, butyr-and acetaldehyde. The silaoxetanes cannot be isolated; the form a­ tion o f dichlorovinylsiloxanes and the olefmic com pounds R -C H = C H -C H 2Bu' suggests that the cycloreversion o f the S i-O four-membered ring competes with an intramolecular isom eri­ zation, evidently via formation o f a zwitterionic intermediate R-CHOSiCl-^CHCFFBu'. The product formation by coupling reactions o f lithiated aldehydes and 2 is excluded by perform­ ing analogous reactions with the chlorosilanes M e2SiCl(R) (R = Cl, Me, Vi). 
  Reference    Z. Naturforsch. 45b, 909—0 (1990); eingegangen am 22. Dezember 1989 
  Published    1990 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-0909.pdf 
 Identifier    ZNB-1990-45b-0909 
 Volume    45 
137Author    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 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-0921.pdf 
 Identifier    ZNB-1990-45b-0921 
 Volume    45 
138Author    Requires cookie*
 Title    Tetraphenylphosphonium-hexachloroarsenat, PPh4[AsCl6]; Synthese und Kristallstruktur  
 Abstract    T etraphenylphosphonium H exach lo ro arsen ate, P P h 4[AsCl6]; Synthesis and C rystal Structure Joachim B ebendorf und U lrich M üller* 
  Reference    Z. Naturforsch. 45b, 927 (1990) 
  Published    1990 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-0927.pdf 
 Identifier    ZNB-1990-45b-0927 
 Volume    45 
139Author    Requires cookie*
 Title    Erdalkaliquadratate, VII [1] Eine neue Koordinationsvariante des Quadratatdianions in BeC40 4 * 3 H 20  
 Abstract    A lkaline-E arth S quarates, VII [1] A New C o o rd in atio n M ode o f the S q u arate D ianion in BeC40 4 • 3 H 20 C hristian R obl* und D aniela K inkeldey 
  Reference    Z. Naturforsch. 45b, 931 (1990) 
  Published    1990 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-0931.pdf 
 Identifier    ZNB-1990-45b-0931 
 Volume    45 
140Author    Lxxix*., PaulK. Iprof, W. Olfgang, A. H. Errm Ann, Jo Sef, G. K. Uchler, IanD. EgnanRequires cookie*
 Title    Mehrfachbindungen zwischen Hauptgruppenelementen und Übergangsmetallen, LXXIX*. Kristall-und Molekülstruktur von Trimethylstannylperrhenat Multiple Bonds between Main G roup Elements and Transition Metals  
 Abstract    A norganisch-chem isches In stitut der T echnischen U n iv ersität M ünchen, L ichtenbergstraße 4, D-8046 G arching bei M ünchen Herrn Prof. Dr. D. Babel zum 60. G eburtstag gew idm et Z. N aturforsch. 45b, 9 3 7 -9 4 2 (1990); eingegangen am 16. Ja n u a r 1990 Stannyl Perrhenate, Polym erie Z igzag-C hain, C rystal S tru ctu re T rim ethylstannyl perrhenate, (C H 3) 3S n 0 R e 0 3 (2), synthesized from dirhenium heptoxide and tetram ethyltin, has a zigzag-chain crystal stru ctu re. T his stru ctu re originates from c ate n a­ tion o f individual m olecules via the tin ato m to a p errh en ate g ro u p o f a n o th e r molecule. The tin atom thus forms the center o f a trig o n al-b ip y ram id al co o rd in atio n geom etry, w ith tw o oxy­ gen atom s adopting apical positions while three m ethyl g roups define the eq u ato rial plane. The R e -O -S n bonds alternate betw een linear and slightly bent. T he zigzag-aggregation o f the chain-structure results from the tetra h e d ra l [R eO J subunits. Ionic co n trib u tio n s to the R e -O -S n bonds are n o t evident from the stru ctu ral d a ta , n o r do d a ta obtain ed from solution indicate any ionization such as [(CH 3) 3S n]+[R e 0 4]~. Follow ing the synthesis o f the title com ­ p o und 2, the heavier congener triphenylplum byl p errh en ate (5) has been synthesized from R e20 7 and Pb(C 6H 5)4. 
  Reference    Z. Naturforsch. 45b, 937 (1990) 
  Published    1990 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-0937.pdf 
 Identifier    ZNB-1990-45b-0937 
 Volume    45 
Prev
...
6
7
8
9
10
...
Next