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1993 (1)
1978 (1)
1976 (1)
1Author    Iring Leichtweis, Reinhard Hasselbring, HerbertW. Roesky, M. Athias Noltemeyer, Axel Herzog, Herrn Prof, -Georg Hans, WagnerRequires cookie*
 Title    Synthesen und Strukturen sechsgliedriger Cyclometallaphosphazene von Tellur(IV) und Rhenium(VII) Syntheses and Structures of Six-Membered Cyclometallaphosphazenes Containing Tellurium(IV) and Rhenium(VII)  
 Abstract    The reactions o f the tridentate ligands (M e3S i),N C (4 -R Q H A)N P P h ,N S iM e, [(1): R = H, (2): R = C F 3] with Re2Ov yield the six-membered rings (4-R C 6H 4C N PPh2N R e 0 2IsI)2 [(3): R = H, (4): R = C F 3], The acyclic com pound M e3SiN C (4-C F3C6H 4)N P Ph2N R eÖ 2O SiM e3 (5) has been obtained by reaction o f 2 with Me^SiOReOy 2 reacts quantitatively with TeCl4 to form the metallacycle 4-C F3C6H4tN P P h 2N TeC lN • pyridine (6) • pyridine. The molecular structures o f 4 • CH 2C12 and 6 • pyridine • 0.5 toluene have been determined by X-ray diffraction. 
  Reference    Z. Naturforsch. 48b, 1234 (1993); eingegangen am 22. April 1993 
  Published    1993 
  Keywords    Inorganic Ring Systems, Tellurium, Rhenium 
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 TEI-XML for    default:Reihe_B/48/ZNB-1993-48b-1234.pdf 
 Identifier    ZNB-1993-48b-1234 
 Volume    48 
2Author    Ulrich Wannagat, Gerd EiseleRequires cookie*
 Title    Ringschlußversuche mit Phenylborsäure* Attempts for Synthesis of Inorganic Rings with Phenylboric Acid  
 Abstract    The inorganic ring systems BNC>2Si2 (B) and BC>3Si4 (E) were prepared for the first time via equations (1) and (5), system BC>3Si2 (C) enlarged by preparation of compound C 1 via eq. (4). Synthesis of a system BC>2Si2 (D) failed as well as preparation of five and seven membered building units VI and VIII. For bis(trimethylsiloxy)phenylborane (IX) detailed and additional information about preparation, properties and structure analysis is given. Compound VTI, CsH^NOSi, was obtained for the first time via eq. (7) and described in its properties. 
  Reference    Z. Naturforsch. 33b, 475—478 (1978); eingegangen am 28. Februar 1978 
  Published    1978 
  Keywords    Preparation, Properties, Inorganic Ring Systems, Structure 
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 TEI-XML for    default:Reihe_B/33/ZNB-1978-33b-0475.pdf 
 Identifier    ZNB-1978-33b-0475 
 Volume    33 
3Author    J.-P Faucher, J.-F Labarre, R. A. ShawRequires cookie*
 Title    Bonding in Cyclophosphazenes: Quantum and Experimental Support for DEWAR'S Island Model  
 Abstract    Quantum mechanical calculations for a number of cyclophosphazenes reveal that transannular bonding and antibonding interactions contribute considerably to the stability and conformation of these PN ring systems. Charge distributions are only in agreement with the island theory; the latter is confirmed by Faraday effect measurements. 
  Reference    (Z. Naturforsch. 31b, 677—679 [1976]; received July 27 1975) 
  Published    1976 
  Keywords    Transannular Bonding, Inorganic Ring Systems, CNDO/2 Calculation, Cyclophosphazenes, Dewar's Island Theory 
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 TEI-XML for    default:Reihe_B/31/ZNB-1976-31b-0677.pdf 
 Identifier    ZNB-1976-31b-0677 
 Volume    31