Bis(tetrathiafulvalene)-calix[2]pyrrole[2]- thiophene and its complexation with TCNQ

The synthesis of a rare example of a calix2]pyrrole2]thiophene derivative incorporating two tetrathiafulvalene units is described along with its X-ray crystal structure. Complexation studies between the bis(tetrathiafulvalene)-calix2]pyrrole2]thiophene and 7,7,8,8-tetracyano-p-quinodimethane (TCNQ) were carried out in solution using absorption and ESR spectroscopies as well as in the solid state using X-ray crystallography and IR spectroscopy.