Formation of Two-Dimensional Supramolecular Water Layer Containing (H₂O)₁₈ Morphology via Dianion Templating

Abstract

Fumaric sodium (Na 2 fum) reacts with CoCl 2 ·6H 2 O to form a one-dimensional (1D) coordination polymeric structure {[Co(bpp) 2 (H 2 O) 2 ]·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 1D polymeric chains behave as pillars to join these water sheets to make an overall three-dimensional supramolecular architecture by hydrogen-bonding interactions.