Formation of two-dimensional supramolecular water layer containing (H2O)18 morphology via dianion templating

Fumaric sodium (Na(2)fum) reacts with CoCl2 center dot 6H(2)O to form a one-dimensional (ID) coordination polymeric structure {[Co(bpp)(2)(H2O)(2)]center dot fum-8H(2)O}(n) (1) in the presence of 1,3-bis(4-pyridyl)propane (bpp) from water at room temperature. An unprecedented two-dimensional (6,3) net topology of hydrogen-bonded water layers results from free water molecules through templating with fum. The I D polymeric chains behave as pillars to join these water sheets to make an overall three-dimensional supramolecular architecture by hydrogen-bonding interactions.