We have studied electron transfer between cytochrome c and the chiral transition-metal complex pair Λ- and Δ-[Co(Ox)3]3− (Ox2− = oxalate) via strong ion-pair formation. Chirality was found in both ion-pair formation and electron transfer, with the Λ enantiomer the more strongly bound and faster reacting. Investigations of the chirality using electron-transfer theory combined with quantum-chemical and statistical-mechanical calculations showed that chirality is solely in inter-reactant interaction and electronic overlap.
Nazmutdinov, R. R., Bronshtein, M. D., Zinkicheva, T. T., Hansen, N. S., Zhang, J., & Ulstrup, J. (2016). Chiral Selectivity in Inter-reactant Recognition and Electron Transfer of the Oxidation of Horse Heart Cytochrome c by Trioxalatocobaltate(III). Inorganic Chemistry, 55(18), 9335-9345. https://doi.org/10.1021/acs.inorgchem.6b01489