Synthesis, molecular, and crystal structures of 3d transition metal cyanocyclopentadienides [M(MeOH) n (H2O)4– n {C5(CN)4X}2] (M=Mn, Fe, Co, Ni, Cu, Zn; X=H, CN, NH2, NO2)

Abstract

Abstract The reaction of the 3d transition metal dichlorides MCl2 (M=Mn, Fe, Co, Ni, Cu, Zn) with the silver salts of substituted tetracyanocyclopentadienides Ag+ [C5(CN)4X]− (X=CN, H, NH2 NO2) gives the complexes [M(MeOH/H2O)4{C5(CN)4)X}2]. Nine of these complexes were characterized by X-ray diffraction and it shows that they all are mononuclear with an octahedral M(N)2(O)4 coordination sphere. In the structures, extensive hydrogen bonding leads to dense three-dimensional network structures.