Synthesis of cationic pentacarbonyl, fac- and mer-tricarbonyl, and cis-and trans-dicarbonyl complexes of manganese(I)

Abstract

The complexes [Mn(CO)₅(OClO₃)] and fac-[Mn(CO)₃(OCMe₂)₃][ClO₄] obtained by the reaction of [Mn(CO)₅Br] with Ag[ClO₄] in dichloromethane or acetone solution are suitable precursors for the synthesis of cationic complexes of the type [Mn(CO)₅L][ClO₄] and of the types fac-[Mn(CO)₃L₃][ClO₄] and cis-[Mn(CO)₂L₄][ClO₄](L = a Group 5B ligand) which, when L is a strong π acceptor, isomerize under reflux to mer-[Mn(CO)₃L₃][ClO₄] or, respectively, to trans-[Mn(CO)₂L₄][ClO₄].