Free radical studies by resonance Raman spectroscopy. Part 3.—4-Nitrobenzoate radical Dianion

Abstract

The free radical di-anion of 4-nitrobenzoate has been produced in aqueous solution by reduction of the parent compound with dithionite. Under steady-state continuous flow conditions the resonance Raman spectrum of the radical could be observed. This spectrum has been interpreted through normal coordinate analysis and molecular orbital calculations, comparisons with the spectrum of the parent being used to determine changes in the force field arising from the different electronic distributions in parent and radical.