Formation of one-dimensional metal–water chain containing discrete water octamers

Abstract

Discrete water octamers containing 1D metal–water chains have been observed in the complex of [Tb2(bpdc)(Pic)2(OH2)12](Pic)2·4H2O·(CH3OH)2 (Pic=picrate, bpdc=2,2′-bipyridine-3,3′-dicarboxylate) (1). The water clusters are trapped by the cooperative association of coordinate interactions as well as hydrogen bonds. The intermolecular interaction is robust enough to really act as a ‘supramolecular glue’ to assemble the binuclear coordination complex and picratol into three-dimensional arrays.