Ligand-to-metal ratio dependent assembly of two distinct 1D and 3D copper(II)-dicyanamide magnetic coordination polymers with a tripyridyltriazole co-tecton

Assemblies of Cu(II) chloride with dicyanamide (dca) anion and a tripyridyltriazole co-ligand 3,4-bis(2-pyridyl)-5-(3-pyridyl)-1,2,4-triazole (L223) under different ligand-to-metal ratios produce two coordination polymers {[Cu5(L223)4(dca)10](H2O)2}n (1) and [Cu(L223)(dca)Cl]n (2), displaying distinct 1D double-chain array and 3D chiral dia network, respectively. Weak antiferromagnetic exchanges are observed in both coordination polymers.