Anodic properties of diarylethene derivatives having organometallic piano-stool tags

The half-sandwich tamoxifen derivative, Mn(CO)(3)(eta(5)-C5H4(Et)C=C(C6H5)(2)), gives a radical cation which is charge-delocalized between the cymantrenyl and diphenylethene moieties and undergoes facile metal-carbonyl substitution reactions. Mn and Re complexes with finely tuned redox potentials can be obtained for cancer cell inhibition studies.