Structural Transition Between a (4,4)-Net and a CdI2-net in Cd(II) Compounds and Conversion from a Mixture to a Pure Substance

The coordination of a rigid triangular ligand 2,4,6-tris[4-(1H-imidazole-1-yl)phenyl]-1,3,5-triazine (TIPT) with Cd(II) ions afforded two compounds with structural motifs of a CdI2-type and a (4,4) network for anions OTf− (CF3SO3−) and OTs− (p-CH3C6H5SO3−), respectively, between which structural transition can be induced by anion exchange via solvent-mediated recrystallization process. Using this method, a pure substance can be obtained from a mixture under the excess of certain kind of anions.