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. 2020 Apr 2;59(8):5564–5578. doi: 10.1021/acs.inorgchem.0c00263

Scheme 4. Cathodic Pathway of [Re(3,3′-DHBPY)(CO)3(PrCN)]+ in PrCN.

Scheme 4

First 1e–-reductive deprotonation at R1 followed by the ETC pathway at the onset of R2′ that produces the corresponding radical of the parent complex, [Re(3,3′-DHBPY•–)(CO)3(PrCN)]. The ultimate 2e–-reductive double deprotonation at R2′ is triggered by the concomitant reduction of the ETC product, resulting in 6-coordinate [Re(3,3′-DHBPY-2H+)(CO)3(PrCN)]2– and its reduced trianionic form isolelectronic with [Re(BPY)(CO)3(PrCN)]−.