Ligand-to-metal ratio dependent assembly of two distinct 1D and 3D copper(II)-dicyanamide magnetic coordination polymers with a tripyridyltriazole co-tecton
摘要:
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 (L-223) under different ligand-to-metal ratios produce two coordination polymers {[Cu-5(L-223)(4)(dca)(10)](H2O)(2)}(n) (1) and [Cu(L-223)(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. (C) 2012 Elsevier B. V. All rights reserved.