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'Hydrogen bonding' in keywords Facet   Publication Year 1982  [X]
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1Author    Beatrix Milewski-Mahrla, Hubert SchmidbaurRequires cookie*
 Title    Synthese und Kristallstrukturen einiger Tetramethylstibonium-Hydrogendicarboxylate Synthesis and Crystal Structures of Some Tetramethylstibonium Hydrogendicarboxylates  
 Abstract    Reactions of pentamethylantimony (CH^sSb with carboxylic acids in the molar ratio 1:2 afford one equivalent of methane and essentially quantitative yields of crystalline tetramethylstibonium hydrogendicarboxylates. Six new compounds of this series have been synthesized using benzoic, o-phthalic, salicylic, 4-ethoxy-salicylic, oxalic, and malic acid, and characterized by analytical and spectroscopic data. An ionic structure with strong hydrogen bonds in the anionic components is proposed. The crystal structures of the hydrogen-dibenzoate (1), hydrogen-ortho-phthalate (2) and 4-ethoxy-hydrogen-salicylate (3) were determined by single crystal X-ray diffraction. The compounds can be described as having ionic lattices with some donor-acceptor inter-actions between the stibonium centers and the carboxylate oxygen atoms. The anions are characterized by strong hydrogen bonds O...H...O. Thus, the (CH^Sb-tetrahedron in 1 is distorted by two benzoate oxygen atoms (at 304(2) and 340(2) pm). The cation in 2 is largely undistorted and the anion has a bydrogenpbthalate hydrogen bond of d(O...H...O) = 232 pm. The cation-anion contact in 3 is as short as d(Sb-O) = 289 pm rendering the Sb atom pentacoordinate. 
  Reference    Z. Naturforsch. 37b, 1393—1401 (1982); eingegangen am 5. Juli 1982 
  Published    1982 
  Keywords    Pentamethylantimony, Tetramethylstibonium Salts, Hydrogendicarboxylates, Hydrogen Bonding, X-ray 
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 TEI-XML for    default:Reihe_B/37/ZNB-1982-37b-1393.pdf 
 Identifier    ZNB-1982-37b-1393 
 Volume    37