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1980 (1)
1979 (1)
1Author    Marianne Baudler, Thomas Pontzen, Josef Hahn, Hans Ternberger, Wolfgang FaberRequires cookie*
 Title    Beiträge zur Chemie des Phosphors, 96 [1] Darstellung und P-Kernresonanzspektrum von isotopen-substituiertem Trilithium-heptaphosphid, 6 Li3P7 Contributions to the Chemistry of Phosphorus, 96 [1] Preparation and 31 P NMR Spectrum of Isotopicly Substituted Trilithiumheptaphosphide, 6 Li3?7  
 Abstract    The Pv-skeleton of trilithiumheptaphosphide, Li3P7 (1), was proved to possess the earlier reported tricyclic structure [2] by complete analysis of the 31 P NMR spectrum of 6Li3P7 observed at — 60 °C. The 6 Li isotopic substitution was carried out to avoid the line broadening caused by the large quadrupole moment of the 7 Li isotope. The unambiguous elucidation of the LisP7 structure confirmed that the exchange process which causes all P atoms to become equivalent above room temperature is analogous to that in bullvalene. A comparison of the chemical shifts with those of (Me3Si)3P7 leads to the result that the P7-skeleton in LisP7 is noticeably compressed along its threefold axis, thus indicating a predominant ionic character. 
  Reference    Z. Naturforsch. 35b, 517—521 (1980); eingegangen am 29. Februar 1980 
  Published    1980 
  Keywords    Trilithiumheptaphosphide-6 Li3, 31 P NMR Spectroscopy, Fluctuating Molecule 
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 TEI-XML for    default:Reihe_B/35/ZNB-1980-35b-0517.pdf 
 Identifier    ZNB-1980-35b-0517 
 Volume    35 
2Author    Marianne Baudler, Hans Ternberger, Wolfgang Faber, Josef HahnRequires cookie*
 Title    Beiträge zur Chemie des Phosphors, 91 [1] Contributions to the Chemistry of Phosphorus, 91 [1] LiaP?, a Polyphosphide with Fluctuating Bonds: Synthesis from P2H4 and Conversion to P7H3  
 Abstract    Trilithiumheptaphosphide, LisP? • 3 solvents (monoglyme, THF) (1), was obtained as the final product in the reaction of diphosphane-4 with n-GjHgLi or LiPH2-1 was charac-terized by elemental analysis, IR, Raman and NMR spectroscopy as well as by the formation of the derivatives (MeaSijsP? and P7Me3 (3). Studying the temperature depend-ence of the 31 P NMR spectrum, all P atoms in the cage structure of 1 were found to become equivalent at + 80 °C. Thus trilithiumheptaphosphide is the first known poly-phosphide with fluctuating bonds. Silylation of 1 with MeßSiCl and subsequent solvolysis with MeOH leads to the corresponding hydride, P7H3 (2), which can be remetalated to the lithium salt 1. 2 was also characterized by its IR, Raman and mass spectra. 
  Reference    Z. Naturforsch. 34b, 1690—1697 (1979); eingegangen am 17. September 1979 
  Published    1979 
  Keywords    Trilithiumheptaphosphide, Heptaphosphane-3, Diphosphane-4, Fluctuating Molecule, Trimethylheptaphosphane -3 
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 TEI-XML for    default:Reihe_B/34/ZNB-1979-34b-1690.pdf 
 Identifier    ZNB-1979-34b-1690 
 Volume    34