New polymeric structure of rhenium octahedral chalcocyanide complex: Ln3+-derived network with one-dimensional channels

A novel cyanobridged coordination polymeric complex with octahedral rhenium cyanocluster anion [Re6(μ3−Se)8(CN)6]4− and Nd3+ cation has been synthesised and structurally characterised. Its solid-state structure contains a channel-type polymeric network built from cluster anions and Nd3+ through ReCNNdNCRe interactions. For compound (H3O){Nd(DMF)3(H2O)3}[Re6Se8(CN)6], space group R3c, unit cell parameters are: a=32.514(5); c=25.255(5) Å, V=23122(7) Å3, Rf=0.0762. A pair of isomorphic complexes has been obtained with Ln=Pr3+,Ho3+.