Anion exchange properties of a two-dimensional coordination framework of cadmium(II) with 1,3-bis(imidazol-1-ylmethyl)-5-methylbenzene

A novel 2D coordination polymer, {[Cd(dimb)2(MeOH)2](ClO4)2}n where dimb = 1,3-bis(imidazol-1-ylmethyl)-5-methylbenzene, was synthesized by treatment of Cd(ClO4)2·6H2O with the dimb ligand in methanol solution. The complex was characterized by X-ray crystallography; the coordination geometry around Cd(II) is a slightly distorted octahedron with an N4O2 donor set. The results of IR and elemental analysis show that the perchlorate anion can be partially exchanged by the tetrafluoroborate anion and indicate that the framework has anion exchange properties.