ZfN: Search Results

1	Author	HansG. Kraft, BerndM. Rode	Requires 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

2	Author	FranzL. Dickert, Walter Gumbrecht	Requires 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

3	Author	JohannesC P M Lapidaire, WillemL. Groeneveld	Requires 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