摘要:
Two hexanuclear zinc(II) complexes, [Zn-6(L-1)(2)(mu(2)-OH)(2)(mu(2)-CH3COO)(8)]center dot CH3CN (1 CH3CN) and [Zn-6(L-2)(2-) (mu(2)-OH)(2)(mu(2)-CH3COO)(8)]center dot 4CH(3)CN (2 4CH(3)CN), where HL1 = 4-methyl-2,6-bis(cyclohexylmethyliminomethyl)- and HL2 = 4-phenyl-2,6-bis(1-naphthalylmethyliminomethyl)-phenol, have been synthesized and characterized by elemental analysis, FT-IR and fluorescence spectroscopic methods, and by X-ray diffraction analysis. In the asymmetric unit of complex 1, two of the three zinc atoms have pentacoordinate geometries and the other is tetrahedrally coordinated, whereas the three distinct Zn atoms in complex 2 adopt three different coordination environments, namely distorted octahedral. trigonal bipyramidal and tetrahedral. The fluorescence properties of the ligands and complexes have been investigated. (C) 2009 Elsevier Ltd. All rights reserved.