Synthesis, characterization, and intervalence charge transfer properties of a series of rhenium(I)-iron(III) mixed-valence compounds

A series of cyanide-bridged mixed-valence compounds of the form {[dmbRe(I)( CO)(3)](n)-Fe-III(CN)(6)}(3-n) were synthesized, and their MM'CT absorption s were modeled using Marcus-Hush theory. The hypsochromic shift of the MM'C T bands with increasing it is due to the increase in the redox potential of the Fe(III) center as more Re(I) species are bridged to it. The single-cry stal X-ray structure of the 3:1 (Re/Fe) species was also determined, and a solvent dependence was performed.