1-Substituted butane-l,3-diones: acid dissociation constants and stabilities of manganese(II), cobalt(II), and copper(II) chelate complexes in aqueous dioxan (50% v/v)

Abstract

Values of the acid dissociation constants of seven 1-substituted butane-l,3-diones have been determined in 50%(v/v) aqueous dioxan at 25·0 °C. Stability constants of manganese(II), cobalt(II), nickel(II), and copper(II) complexes of 1-phenylbutane-1,3-dione, and nickel(II) complexes of 1-(4-methoxy-, 1-(4-methyl-, 1-(4-bromo-, and 1-(4-nitro-phenyl) derivatives of butane-1,3-dione have been obtained in the same solvent.