INCLUSION AND INTERCALATION OF 4,4′-BIPYRIDINE IN A ZINC(II) AQUA PERCHLORATO COMPLEX [Zn(4,4′-bpy)(H2O)3(ClO4)](ClO4)·(4,4′-bpy)1.5·H2O

Abstract

A novel 4,4′-bipyridine's zinc(II) aqua perchlorato complex [Zn(4,4′-bpy)(H2O)3(ClO4)](ClO4)·(4,4′-bpy)1.5·H2O (where 4,4′-bpy = 4,4′-bipyridine) has been synthesized by self-assembly. The crystal structure consists of zinc ion chains [Zn(4,4′-bpy)(H2O)3(ClO4)] bridged by coordinated 4,4′-bpy molecules. Two chains related by a centre of inversion are interconnected by hydrogen bonds between coordinated water molecules and coordinated perchlorate anions to form a two-dimensional ‘ladder’ with cavities enclosing uncoordinated 4,4′-bpy molecules whereas other 4,4′-bpy molecules are intercalated in between the ‘ladder’ layers. All these 4,4′-bpy molecules are hydrogen bonded to coordinated water molecules as another kind of bridge to extend the structure into a three-dimensional network in the solid.