CO2 reduction or HCO2- oxidation? Solvent-dependent thermochemistry of a nickel hydride complex

Bianca M Ceballos; Charlene Tsay; Jenny Y Yang

doi:10.1039/c7cc02511d

CO₂ reduction or HCO₂^- oxidation? Solvent-dependent thermochemistry of a nickel hydride complex

Chem Commun (Camb). 2017 Jun 29;53(53):7405-7408. doi: 10.1039/c7cc02511d.

Authors

Bianca M Ceballos¹, Charlene Tsay, Jenny Y Yang

Affiliation

¹ Department of Chemistry, University of California, Irvine, USA. j.yang@uci.edu.

PMID: 28621363
DOI: 10.1039/c7cc02511d

Abstract

The hydricity (ΔG_H^-) of a newly synthesized nickel hydride was experimentally determined in acetonitrile (50.6 kcal mol^-1), dimethyl sulfoxide (47.1 kcal mol^-1), and water (22.8 kcal mol^-1). The hydricity values indicate hydride transfer from [HNi(TMEPE)₂][BF₄] (TMEPE = 1,2-bis[di(methoxyethyl)phosphino]ethane) to CO₂ is exergonic in water and endergonic in the organic solvents.