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'Complex Formation' in keywords Facet   Publication Year 1980  [X]
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1Author    JohannesC P M Lapidaire, WillemL. GroeneveldRequires cookie*
 Title    Dodecamethyl Bisimidotriphosphoramide (TRIPA) A Tridentate Ligand, Part II [1]  
 Abstract    In this article we describe the synthesis of TRIPA, dodecamethyl bisimidotriphosphor-amide (C12H36N7O3P3) and of its complexes with various lanthanide-nitrates. Five types of complexes have been isolated according to the compositions, X-ray diffraction patterns and IR spectra. 1. M(N03)3(TRIPA)3(acetone) M = La, Pr, Nd, 2. M(N03)3(TRIPA) M = Y, 3. M(N03)3(TRIPA)2(nitromethane) M = Er, Y, 4. M(N03)3(TRIPA)2(acetone) M = Sm, Gd, Dy, Er, Y (type I), 5. M(N03)3(TRIPA)2(acetone) M = Y (type II). The yttrium complexes, type I and II, are isomeric. IR spectra are given together with the NMR spectra. It is concluded that in all complexes the three TRIPA oxygens are coordinated, except in group 1. The nitrate groups in group 2 to 5 are involved in the coordination, particularly in the type 2 complex, where there are bidentate nitrate groups. There seems to be a difference in the conformation of the TRIPA molecules between the free ligand, the complexes in group 1, in group 2 and in group 3, 4, 5 Hygroscopic TRIPA can be easily confused with a stable mono-hydrate, TRIPA • H20. 
  Reference    Z. Naturforsch. 35b, 607—613 (1980); received October 15 1979/January 9 1980 
  Published    1980 
  Keywords    Complex Formation, Lanthanide-nitrates, Tridentate ligand, Phosphoryl Compound, TRIPA 
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 TEI-XML for    default:Reihe_B/35/ZNB-1980-35b-0607.pdf 
 Identifier    ZNB-1980-35b-0607 
 Volume    35