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'Caesium Macrocyclic Complexes' in keywords
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1999 (2)
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 
2Author    JuliaA. Rusanova3, PhilipJ. Squattritob, KonstantinV. Domasevitcha, Volodimirn KokozayaRequires cookie*
 Title    Structure of a Cs(18-crown-6)N(CN)2*H20 Complex: Assembly of the Dimeric 2:2 Anion Paired Encapsulate by Means of jz2-Bridging Water Molecules  
 Abstract    The new macrocyclic complex of composition Cs(18-crown-6)N(CN)2-H20 has been pre­ 
  Reference    Z. Naturforsch. 54b, 389—393 (1999); received October 23 1998 
  Published    1999 
  Keywords    18-Crown-6, Caesium Macrocyclic Complexes, Dicyanamide, Crystal Structure 
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 TEI-XML for    default:Reihe_B/54/ZNB-1999-54b-0389.pdf 
 Identifier    ZNB-1999-54b-0389 
 Volume    54 
3Author    JuliaA. Rusanova3 ', PhilipJ. Squattritob, VeraV. Ponomareva3, KonstantinV. Domasevitch3, VolodimirN. Kokozay3Requires cookie*
 Title    Wrap-around Encapsulated Cs(dibenzo-24-crown-8)+ Cations form Linear Coordination Polymers with Dicyanoargentate Anions Ag(CN)2~  
 Abstract    The new macrocyclic dicyanoargentate complex Cs(dibenzo-24-crown-8)[Ag(CN)2] has been prepared and studied by means of X-ray diffraction (monoclinic, space group P2)/a, with a = 12.730(3), b = 15.443(3), c = 15.323(3) Ä, V = 3005(1) A3, Z = 4, R \ = 0.041; wR2 = 0.048 for 5488 unique reflections with I > 3<r(I)). The lattice consists of complex Cs(db-24-crown-8)+ cations (as an example of the "wrap-around" structure) and [Ag(CN)2]~ anions forming a one-dimensional polymeric structure. The caesium atoms are coordinated with 8 oxy­ gen atoms of the macrocycle and two nitrogen atoms of the dicyanoargentate groups, bonding to the cation on both sides of the crown-ether. It is the first structure of a dibenzo-24-crown-8 complex with a large metal cation such as Cs+. 
  Reference    Z. Naturforsch. 54b, 1129—1132 (1999); received April 4 1999 
  Published    1999 
  Keywords    Dibenzo-24-crown-8, Caesium Macrocyclic Complexes, Dicyanoargentate, X-Ray Data, One­ dimensional Polymer 
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 TEI-XML for    default:Reihe_B/54/ZNB-1999-54b-1129.pdf 
 Identifier    ZNB-1999-54b-1129 
 Volume    54