A bi-chain CoII coordination framework bridged by water molecules: magnetic properties and photocatalytic behavior

A new coordination framework, [Co₂(L)₂(bpy)₂(H₂O)]_n (1) (H₂L = (4-phenyl)-2,6-bis(4-carboxyphenyl)pyridine and bpy = 2,2′-bipyridine), has been prepared and structurally characterized. Complex 1 shows an interesting bi-chain substructure bridged by coordinated water molecules, which is further extended into a three-dimensional (3-D) supramolecular structure by π–π stacking interactions. Moreover, the magnetic properties and photocatalytic activity for degradation of methyl orange have been investigated.