Metal–Ligand Cooperation in Cp*Ir-Pyridylpyrrole Complexes: Rational Design and Catalytic Activity in Formic Acid Dehydrogenation and CO<sub>2</sub> Hydrogenation under Ambient Conditions
作者:Xiu-Fang Mo、Chao Liu、Ze-Wen Chen、Fan Ma、Piao He、Xiao-Yi Yi
DOI:10.1021/acs.inorgchem.1c02487
日期:2021.11.1
storage; however, FA dehydrogenation and CO2 hydrogenation are usually studied separately using different catalysts for each reaction. This report describes of the catalysis of [Cp*Ir(N∧N)(X)]n+ (Cp* = 1,2,3,4,5-pentamethylcyclopentadienyl; X = Cl, n = 0; X = H2O, n = 1) bearing a proton-responsive N∧N pyridylpyrrole ligand for both reactions. Complex 2-H2O catalyzes FA dehydrogenation at 90 °C with a TOFmax
CO 2 + H 2和FA/甲酸盐之间的相互转化是固定二氧化碳和可逆储氢的最有前景的策略;然而,FA 脱氢和 CO 2加氢通常分别使用不同的催化剂进行研究。该报告描述了 [Cp*Ir(N∧N)(X)] n + (Cp* = 1,2,3,4,5-五甲基环戊二烯基;X = Cl,n = 0;X = H 2 ) 的催化作用O, n = 1) 带有质子响应 N∧N 吡啶基吡咯配体用于两种反应。络合物2-H 2 O在 90 °C 催化 FA 脱氢,TOF最大值为 45 900 小时–1 . 在无碱条件下,其在水溶液中比在纯溶液中的催化活性更高。这些配合物还在碱的存在下催化 CO 2氢化,在大气压 (CO 2 /H 2 = 0.05 MPa/0.05 MPa) 和 25 °C 条件下,在水溶液和TOF 中的 TOF 值为 4.5 h –1甲醇/H 2中 29 h –1 的值O 混合溶剂。可能的机制是通过中间表征和