The cyanocarbanion (C[C(CN)2]3)2− as monodentate ligand: Synthesis, structure and magnetic properties of [Mn2(bpym)3(tcpd)2(H2O)2] (tcpd2− = (C[C(CN)2]3)2− and bpym = 2,2′-bipyrimidine)

We report a new Mn(II) dinuclear complex [Mn2(bpym)3(tcpd)2(H2O)2] (1) involving the tcpd2− polynitrile anion as a terminal ligand with chelate and bis-chelate bipyrimidine ligands. The dinuclear units are held together by hydrogen bonds involving coordinated water molecules and two nitrile groups of the tcpd ligand, giving rise to a 2D structure overall.