Anodic properties of diarylethene derivatives having organometallic piano-stool tags.

The half-sandwich tamoxifen derivative, Mn(CO)3(η5-C5H4(Et)CC(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.