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1997 (1)
1Author    VeraV. Ponomareva3, VictorV. Skopenkoa, KonstantinV. Domasevitcha, Joachim Sielerb, Thomas GelbrichbRequires cookie*
 Title    Synthesis and Crystal Structure of a Caesium Hydrogen Benzoylcyanoximate Complex with 18-Crown-6: Cs(18-Crown-6){H(L)2}  
 Abstract    The caesium hydrogen benzoylcyanoximate (L_) complex with 18-crown-6 of composition Cs(18-crown-6){H(L)2} has been prepared and studied by means of X-ray diffraction [mon­ oclinic, space group P2)/n, with a = 9.906(1), b = 18.387(3), c = 18.855(3)Ä, ß = 90.13(1)°, V = 3434.3(9) Ä, Z = 4; final R1 = 0.043 for the 6431 independent reflections used. The lattice consists of C s(18-crown-6)+ cations and complex hydrogen oximate anions {H(L)2}~, formed via strong hydrogen bonding between the oxygen atoms of nitroso-groups [O— O ca. 2.456(5)A], The caesium atom deviates by 1.492(3) A from the mean plane of the oxygen atoms of the macrocyclic ether (dominant orientation of disordered ligand, 60%) and adopts a typical "sunrise coordination" [C s-0 (ether) 3.040(9)-3.312(7) A], The hydrogen oximate groups are bonded to the metal center only on one side of the crown ether plane via the oxygen atoms of nitroso-groups and the nitrogen atoms of cyano groups (C s-0 ca. 3.040(9), 3.312(7) A; Cs-N ca. 3.469(5), 3.679(6) A). The coordination polyhedron of Cs+ can be described as a distorted bicapped tetragonal prism. 
  Reference    Z. Naturforsch. 52b, 901—905 (1997); received February 28 1997 
  Published    1997 
  Keywords    Caesium Macrocyclic Complexes, Crown Ether Complexes, Benzoylcyanoxime, X-Ray 
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 TEI-XML for    default:Reihe_B/52/ZNB-1997-52b-0901.pdf 
 Identifier    ZNB-1997-52b-0901 
 Volume    52