Second sphere control of CO2 reduction selectivity by iron porphyrins: The role of spin state

被引：2

作者：

Patra, Suman ^{[1
]}

Ghosh, Soumili ^{[1
]}

Samanta, Soumya ^{[1
]}

Nayek, Abhijit ^{[1
]}

Dey, Abhishek ^{[1
]}

机构：

[1] Indian Assoc Cultivat Sci, Sch Chem Sci, 2A Raja SC Mullick Rd, Kolkata 700032, West Bengal, India

来源：

JOURNAL OF ORGANOMETALLIC CHEMISTRY | 2025年 / 1023卷

关键词：

Selective carbon dioxide reduction; Iron porphyrin; Pendent phenanthroline; Spectro-electrochemistry coupled FTIR; Resonance raman spectroscopy; HYDROGEN-BOND DONORS; CARBON-DIOXIDE; ELECTROCHEMICAL REDUCTION; MOLECULAR CATALYSIS; PHOTOCHEMICAL REDUCTION; CONVERSION; COMPLEXES; FE;

D O I：

10.1016/j.jorganchem.2024.123439

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Iron porphyrins are reported to reduce CO2 selectively to CO. Hydrogen bonding interactions are reported to facilitate this 2e(-)/2H(+) reduction process. A series of iron porphyrins are reported here where hydrogen bonding distal super structure is introduced systematically. The results show that the selectivity for 2e(-)/2H(+) CO2 reduction changes dramatically from CO to HCOOH as hydrogen bonding interactions are introduced. The resonance Raman data of the Fe(II)-COOH intermediate, trapped at -80 degrees C, show that the spin state of this species changes from low spin to high spin as hydrogen bonding is introduced. The spin state of the Fe(II)-COOH intermediate seems to determine the selectivity of 2e(-)/2H(+) CO2 reduction in iron porphyrins.

引用

页数：5

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