The reaction of coarse-grain manganese powder with diiodotrimethylphosphorane to form [Mn(PMe3)I2]n, which reacts with trace quantities of molecular oxygen to form the mixed (+2/+3) oxidation state complex [Mn2(PMe3)3I5]PMe3

Abstract

Coarse-grain unactivated manganese powder reacts with Me₃Pl₂ in diethyl ether to form the polymeric [Mn(PMe₃)I₂]_n complex, I, which reacts with trace quantities of dioxygen to form dinuclear [Mn₂(PMe₃)₃I₅]·PMe₃, II, the first mixed oxidation state (+2/+3) manganese complex which contains phosphine ligands; both I and II react with an excess of dioxygen to form the monomeric [Mn(PMe₃)₂I₃].