SYNTHESIS AND OPTICAL LIGAND-TO-LIGAND CHARGE TRANSFER OF Zn(2,6-BIS(BENZIMIDAZOLYL)PYRIDINE)-(3,4-TOLUENEDITHIOLATE)

The complex Zn[(BzlmH)2Py](TDT) with (BzImH)zPy = 2,6-bis(benzimidazolyl)pyridine and TDT2- = 3,4-toluenedithiolate was prepared and characterized spectroscopically. The yellow colour of this compound is caused by an absorption band (λmax = 369 nm in ethanol), which is assigned to a ligand-to-ligand charge transfer transition from TDT2- to the (BzImH)2)2Py ligand.