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DOI: 10.1039/A706834D (Paper) Reference Section for: J. Chem. Soc., Dalton Trans., 1998, 959-966

Heterotrinuclear complexes containing d- and f-block elements: synthesis and structural characterisation of novel lanthanide(III)– nickel(II)–lanthanide(III) compounds bridged by oxamidate

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Takayuki Sanada, Takayoshi Suzuki and Sumio Kaizaki

Abstract

The reaction of lanthanide(III) ions with a tripodal ligand HB(pz)3– [= hydrotris(pyrazol-1-yl)borate] and a ‘complex ligand’ [NiL]2– [L = tdo4– or edo4–, where H4tdo = trimethylenebis(oxamide) and H4edo = ethylenebis(oxamide)] in aqueous solution produced the novel 3d–4f heterotrinuclear complexes [NiL{Ln[HB(pz)3]2}2] [abbreviated as Ni(tdo)Ln2 (Ln = Eu, Tb or Yb) and Ni(edo)Ln2 (Ln = Sm to Lu)]. The crystal structures of Ni(tdo)Yb2 and Ni(edo)Lu2 have been determined by X-ray diffraction method. The Ni atoms in both have a square-planar environment and the Ln atoms have eight-co-ordinated square-antiprismatic co-ordination geometries.

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