Wilkinson, Luke A., McNeill, Laura, Meijer, Anthony J. H. M. and Patmore, Nathan J. (2013) Mixed Valency in Hydrogen Bonded ‘Dimers of Dimers’. Journal of the American Chemical Society, 135 (5). pp. 1723-1726. ISSN 0002-7863

Dimolybdenum quadruply bonded compounds containing a pendant lactam functional group form self-complementary hydrogen bonded ‘dimers of dimers’ in the solid-state and CH2Cl2 solutions. Electrochemical studies in CH2Cl2 show two consecutive one-electron redox processes corresponding to oxidation of the Mo24+ cores. Spectroelectrochemical studies on the ‘dimers of dimers’ show no evidence of intervalence charge transfer bands in the mixed valence radical cations formed by one-electron oxidation, indicating that they are examples of proton-coupled mixed valency.

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