A 3D architecture constructed by saturated Dawson polyoxoanions and transition-metal coordination complexes [Cu I7(Bpy) 6(BpyEt) 2

Abstract

A novel organic–inorganic hybrid compound: K 2(H 3O)[Cu I 7(Bpy) 6(BpyEt) 2][P 2W 18O 62] 2·6H 2O 1 (bpy = 4,4′-bipyridine; BpyEt + = N-ethylbipyridine cation) was hydrothermally synthesized and structurally characterized by routine techniques and single-crystal X-ray diffraction analysis. The compound is a 3D architecture constructed by saturated Dawson polyoxoanions and transition-metal coordination complexes (containing N-ethylated bpy) [Cu I 7(Bpy) 6(BpyEt) 2], in which the [P 2W 18O 62] 6− (P 2W 18) clusters are modified by five Cu I N coordination polymeric chains. The striking feature of the structures is that there are three kinds of coordination geometries for copper I ions, which are responsible for the formation of polymeric structures. It is also interesting that N-ethylated bpy was firstly in the high dimensional POM framework.