Hydrogen-bonded supramolecular structures constructed from trinuclear copper units

Four copper complexes with similar trinuclear copper units, [Cu-6(Bmshp)(2)(SO4)(2)(H2O)(7)]center dot 2H(2)O (1), [Cu-3(Bmshp)(ClO4)(2)(H2O)(4)]center dot 5H(2)O (2), [Cu-3(Bmshp)(DMF)(4)(H2O)(2)]center dot H2O center dot 2DMF center dot 2ClO(4) (3) and [Cu-3(H(2)Bcshp)(ClO4)(2)(H2O)(4)]center dot 3H(2)O (4) (H(4)Bmshp = 2,6-bis[(3-methoxysalicylidene)hydrazinocarbonyl]pyridine, H(6)Bcshp = 2,6-bis[(3-carboxylsalicylidene)hydrazinocarbonyl]pyridine), were synthesized and characterized by elemental analysis, IR and single crystal X-ray diffraction analysis. Due to the different anions, solvents and ligands used in the syntheses, complexes 1-4 exhibit diverse supramolecular structures constructed from the corresponding trinuclear copper units via H-bonds.