One-dimensional copper polymers with pentadentate diazine ligands

One-dimensional copper(II) polymers [(CU4L2)(NO3)(4)]n (1) and [(Cu4L2)Cl-4](n) (2) (H2L = salicylaldehyde-2-pyridinecarboxyl-hydrazone) were achieved via self-assembly. The (CuCu)-Cu-... separations were ca. 2.90 and 4.75 angstrom for the phenoxide oxygen bridged pair and the N-N bridged pair with antiferromagnetic spin exchanges between Cu(II) ions. (c) 2005 Elsevier B.V. All rights reserved.