Fig. 2: Homogeneous Mn complexes applied in CO2 hydrogenation to FA33,34,35,36,37 and its dehydrogenation reactions38,39,40,41.

Hydrogenation reactions are shown on the left side of the figure under the green bar, and dehydrogenation is shown on the right under the pink bar. DBU: 1,8-diazabicyclo(5.4.0)undec-7-ene, DMOA: N,N-dimethyloctylamine, TEA: triethylamine, AA: α-amino acid, FA: formic acid, TONmax: turnover number, TTON: total turnover number.