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'Henicosaphosphide Anion Crystal Structure' in keywords
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1988 (1)
1Author    Gerhard Fritz, Hans-Werner Schneider, Wolfgang Hönle, Hans Georg, SchneringRequires cookie*
 Title    Zur Chemie und Strukturchemie von Phosphiden und Polyphosphiden, 49 [1] Bildung und Struktur des Henicosaphosphids [Li(12-Krone-4) 2 ]3P2i(THF) 2 Chemistry and Structural Chemistry of Phosphides and Polyphosphides, 49 [1] Formation and Structure of the Henicosaphosphide [Li(12-Crown-4) 2 ] 3 P 21 (THF) 2  
 Abstract    The reaction of Li 3 P 7 (DME) 3 with crown ether 12-crown-4 and (CHT)Cr(CO) 3 yields a reddish oil, from which red crystals of [Li(12-crown-4) 2 ] 3 P 21 (THF) 2 (1), red crystals of Li 2 P 16 (12-crown-4) x (THF) 2 as well as a not yet identified yellow substance separates. From this mixture crystals of 1 could be isolated. [Li(12-crown-4),] 3 P,,(THF), (1) crystallizes in the space group P2,/a with a = 3021.1(6) pm, b = 1901.5(4) pm, c = 1603.0(4) pm, ß = 95.98(3)° and Z = 4 formula units in the unit cell. The structure is characterized by isolated ^[P 2 I 3 ~] trianions and Li(12-crown-4) 2 cations. The trianion has approximately the symmetry mm2. The bond distances d(P-P) range from 213.9 pm to 226.8 pm and are differentiated by their function in the skeleton. The bond angles /3(P-P-P) are in the range 86.1° to 107.7° and image clearly the influence of the repulsion of the non-bonded electron pairs of the strained anion. The curvature of the trianion is approx. 0.8 nm" 1 and is three times larger than the curvature evaluated from structural models. 
  Reference    Z. Naturforsch. 43b, 561—566 (1988); eingegangen am 15. Januar 1988 
  Published    1988 
  Keywords    Henicosaphosphide Anion Crystal Structure, Molecular and Polymer Trianion, Heptaphospha-Nortricyclene, Heptaphospha-Norbornane 
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 TEI-XML for    default:Reihe_B/43/ZNB-1988-43b-0561.pdf 
 Identifier    ZNB-1988-43b-0561 
 Volume    43