Effects of proton tunneling distance on CO 2 reduction by Mn terpyridine species.
Yuhang QingQianqian WuShuanglin HePing ZhangYing XiongYaping ZhangFang HuangFei LiLin ChenPublished in: Dalton transactions (Cambridge, England : 2003) (2023)
Herein, we report two manganese terpyridine dicarbonyl complexes, covalently attached to a proximal (1) or distal (2) amide moiety at the ortho position of the pendent phenyl ring as a proton relay. The isomer 1 achieves a turnover frequency (TOF) of 325 s -1 with a minor overpotential of ca . 200 mV. The performance ranks it among the most efficient molecular catalysts for CO 2 -to-CO conversion, and it is ca. 2 orders faster than isomer 2.