Spectrophotometric studies of complex formation in solution between heptamolybdate(6–) and manganese(II), cobalt(II), or copper(II) ions

Abstract

The reaction between the isopolyanion [Mo₇O₂₄]^6– and the bivalent transition-metal ions Mn²⁺, Co²⁺, and Cu²⁺ has been studied spectrophotometrically. It is suggested that 1 : 1 complexes are formed in solution. The probable formulation and ligand-field spectra of the 1 : 1 complexes are discussed. The formation constants of the complexes are small, 260–1 000 dm³ mol^–1.