UV-Vis-NIR spectroelectrochemical study of tetrathiorhenate-bridged diruthenium complexes

摘要

The new compound (NEt4)[(acac)(2)RuS2ReS2Ru(acac)(2)] was characterized by cyclic voltammetry to reveal reversible reduction and oxidation behavior. While the redox products proved EPR silent, the UV-Vis-NIR spectroelectrochemistry showed shifted charge-transfer absorptions and a typical near-infrared intervalence (Ru-II -> Ru-III) band at lambda(max) = 1725 nm (epsilon = 1800 M-1 cm(-1)) for the one-electron oxidized intermediate. The results are discussed in comparison to those obtained for [(bPY)2RuS2ReS2RIOPYMC13. (C) 2014 Elsevier Ltd. All rights reserved.