Syntheses and crystal structures of three new Zn(II) complexes constructed by homophthalate and diimine ligands

Three new zinc(II) complexes constructed by homophthalate (hpht) and dimine ligand; [Zn(phen)(hpht)(H2O)](n) (1), [Zn(2,2'-bpy)(hpht)](n) 2.5nH(2)O (2) and [Zn-2(4,4'-bpy)(hpht)(2)(H2O)(2)](n) nH(2)O (3), have been solvothermally synthesized and structurally characterized. X-ray single-crystal diffraction analyses reveal that 1 is 2D supromolecular framework formed by discrete dimers through hydrogen bonding and pi-pi interaction. 2 has a 2D layer structure formed by dimeric units through pi-pi interaction of 2,2'-bpy and phenyl ring of hpht, with water molecules as space fillers. 3 is an interesting 2D network which contains ladder-like double chains, and the 'ladders' are connected to each other by binuclear macrocyclic rings. (c) 2005 Elsevier B.V. All rights reserved.