Dynamic IR properties of Fe(CO) 3( η4-2,5-norbornadiene) and its radical anion

Abstract

A variable temperature specular reflectance cell for thin layer spectroelectrochemistry (SEC) in the infrared and UV–Vis regions was employed to study the reduction of neutral Fe(CO) 3( η 4-NBD) ( 1) (NBD=2,5-norbornadiene) to its radical-anion Fe(CO) 3( η 4-NBD) ( 1 − ). Together 1 and 1 − comprise an unusual case where a dynamic contribution to IR spectral features can be observed in one redox state ( 1), but not the other ( 1 − ).