Anomalous reactions of the diamine Me2NCH2NMe2 with nickel(II) and cobalt(II)

Abstract

The diamine Me2NCH2NMe2 (tmmn) is capable of forming simple adducts with most metal(II) ions of the first transition series, but with nickel and cobalt a variety of additional products can be obtained from its reaction with the dihalides. The diamine may be monodentate or bidentate, it may (formally) lose a hydride to generate a cation, and each N–C bond may break, generating new products containing additional methyl groups or the ions (Me2NH2)+ or (Me2NCH2)+.