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 [Tb 2 (bpdc)(Pic) 2 (OH 2 ) 12 ](Pic) 2  · 4H 2 O · (CH 3 OH) 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.

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