Co-ordination complexes containing multidentate ligands. Part 12. Nickel(II)–bismuth(III) co-ordination in nickel(II) complexes of tris(o-dimethylarsinophenyl)bismuthine and tris(3-dimethylarsinopropyl)bis-muthine

Abstract

Two potentially quadridentate chelating ligands containing bismuth atoms have been synthesised: tris(o-dimethyl-arsinophenyl) bismuthine (L¹) and tris(3-dimethylarsinopropyl)bismuthine (L²). Reaction of L¹ with nickel(II) salts produces the essentially square-pyramidal [NiL¹X]⁺(X = Cl, Br, or I) and [Ni₂L¹₃][ClO₄]₄ species, whilst L² forms the trigonal-bipyramidal [NiL²(OH₂)][ClO₄]₂. The resulting structures are discussed in terms of the structures of the ligands.