A mixed isocyanide Mn(i) complex and its reduction to a metallate

Abstract

A stepwise ligand exchange starting from [Mn(CO)5Br] allows the synthesis of the heteroleptic isocyanide manganese(I) complex mer,trans-[Mn(CNp-FArDArF2)3(CNtBu)2Br] (DArF = 3,5-(CF3)2C6H3, tBu = tert-butyl). Subsequent reduction gave the first heteroleptic isocyanide manganese(−1) complex, [K(18-crown-6)][Mn(CNp-FArDArF2)3(CNtBu)2], exhibiting a five-coordinate, trigonal bipyramidal coordination sphere.