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1983 (1)
1980 (1)
1979 (1)
1Author    HansG. Kraft, BerndM. RodeRequires cookie*
 Title    The Compounds Mg(Hacac)2(C104)2 and Ca(Hacac)2(C104)2  
  Reference    Z. Naturforsch. 34b, 886—887 (1979); eingegangen am 25. Januar/15. März 1979 
  Published    1979 
  Keywords    Preparation, Complex Formation, Acetylacetone 
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 TEI-XML for    default:Reihe_B/34/ZNB-1979-34b-0886_n.pdf 
 Identifier    ZNB-1979-34b-0886_n 
 Volume    34 
2Author    FranzL. Dickert, Walter GumbrechtRequires cookie*
 Title    Komplexbildung und Ligandenfluktuation im System Co (II) / [18] Krone-6 Complex Formation and Ligand Fluctuation in the System Co(II)/[18]crown-6  
 Abstract    The ligand properties of [18]crown-6 towards Co(II) ions were studied by iH and 13 C NMR spectroscopy in nitromethane and nitromethane/methanol. The complexes [Co([18]crown-6)] ++ and mer-[Co([18]crown-6)(CH30H)3] ++ which were detected in solu-tion show ligand fluctuations on the NMR time scale. For the mixed complex a crown ether rotation occurs. Additionally, a synchronous process between the movement of the macrocyclic ligand and the dissociation reaction of methanol from the metal ion is observed. 
  Reference    Z. Naturforsch. 38b, 934—937 (1983); eingegangen am 28. März/27. April 1983 
  Published    1983 
  Keywords    Crown Ether, Complex Formation, Ligand Fluctuation, NMR Spectroscopy 
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 TEI-XML for    default:Reihe_B/38/ZNB-1983-38b-0934.pdf 
 Identifier    ZNB-1983-38b-0934 
 Volume    38 
3Author    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