Crystal structure of the mononuclear complex [Mn(mesalim)(2)Cl] and electrochemical studies of manganese complexes of the ligand Hmesalim

摘要

The complex [Mn(mesalim)(2)Cl] (1), (Hmesalim = methyl salicylimidate) has been synthesized and fully characterized. The manganese(III) complex is formed by the reaction of the ligand Hmesalim with manganese(II) chloride. Complex 1 is mononuclear and crystallizes in the space group P (1) over bar. Electrochemical studies were performed for complex 1, as well as for the related complexes [Mn(mesalim)(2)(OAc)(MeOH] . MeOH (2) and [Mn-2(etsalim)(4)(Hetsalim)(2)](ClO4)(2) (3), (Hetsalim = ethyl salicylimidate). The complexes display intricate oxidation-reduction behaviour, and coulometric analyses in combination with electrochemical analyses have been used to understand the electron transfer mechanisms occurring at the electrodes. (C) 2004 Elsevier B.V. All rights reserved.