Polyterthiophene-bearing pendant organomolybdenum complexes: electropolymerization of erythro-[Mo2(μ-C5H5)2(CO)4{μ-η2∶η2-C(R)C[C4HS(C4H3S-2)2-2,5]}]

Terthiophenes bearing pendant organomolybdenum complexes, erythro-[Mo2(η-C5H5)2(CO)4{µ-η2∶η2-C(R) C[C4HS(C4H3S-2)2-2,5]} (R = H 1a or Ph 1b) were prepared by reaction of [Mo2(η-C5H5)2(CO)4] with 3′-alkynyl-2,2′∶5′,2″-terthiophenes. The molecular structures of 1a and 1b were identified by spectroscopic methods and X-ray diffraction. Cyclic voltammetry of 1a and 1b showed deposition of electroactive polymeric films on the electrode surface. The absorption spectra of 1a, 1b and their polymer films are presented.