Abstract
The iron solution chemistry of the FeCl
3-gallocyanine system has been investigated by pH titration, UV visible spectroscopy and Mössbauer spectroscopy. Iron reduction was found in the pH range 2–5 and photo-reduction of the iron(III) present was also noted. Due to the instability of the species present in solution, the use of gallocyanine as a spectrophotometric indicator in iron systems is not encouraged. The iron-gallocyanine system was proposed as a potential model of the photosensitive anti-cancer drug, Bleomycin.