The M(bipy)32+ cations in the isomorphous structures of [M(bipy)3][M′(dca)3]2, [dca = dicyanamide, N(CN)2−; M = Fe, M′ = Mn 1, Fe 2 or M = Ni, M′ = Mn 3] are contained within hexagonal windows of anionic 2D (6,3) M(dca)3− sheets; weak antiferromagnetic coupling is observed between metal centres within the anionic networks of all three compounds.
