摘要:
Two new coordination polymers, [Zn(bpndc)(4,4'-bpy)(1.5)](n)(.)0.5n(4,4'-bpy)-0.5nH(2)O (1) and [Zn(bpndc)(phen)(H2O)](n) (2) (H(2)bpndc=benzophenone-4,4'-dicarboxylic acid; 4,4'-bpy=4,4'-bipyridine; phen=1,10-phenanthroline) were synthesized by the hydrothermal reactions and characterized by single crystal X-ray diffraction, elemental analysis, IR spectrum and thermal analysis. In 1, 4,4'-bpy molecules link Zn(II) ions into one-dimensional ladders, and these ladders are bridged by bpndc(2-) ligands, resulting in an infinite two-dimensional rhombohedral network. Such rhombohedral grids interweave each other, forming a three-dimensional structure. In 2, Zn2O2 cores are interconnected by bpndc(2-) ligands to generate a one-dimensional centripede-like double-chain structure, and further assembled by O-H...O hydrogen bonds and pi-pi stacking interactions to form three-dimensional supramolecular network with one-dimensional channels. (C) 2004 Elsevier B.V. All rights reserved.