Theoretical studies of the mechanism of catalytic hydrogen production by a cobaloxime

被引:201
作者
Muckerman, James T. [1 ]
Fujita, Etsuko [1 ]
机构
[1] Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA
关键词
MOLECULAR-ORBITAL METHODS; GAUSSIAN-BASIS SETS; PHOTOCATALYTIC SYSTEM; HOMOGENEOUS SYSTEM; FUNCTIONAL MODELS; ORGANIC-MOLECULES; ELECTRON-TRANSFER; COBALT CATALYST; ROW ATOMS; COMPLEXES;
D O I
10.1039/c1cc15330g
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Our theoretical studies of the standard reduction potentials of the molecular complex [Co-II(dmgBF(2))(2)](0) (dmgBF(2) = difluoroboryldimethylglyoximate) in acetonitrile solution shed light on its electrocatalytic mechanism for hydrogen production. Three such mechanisms have been proposed, all proceeding through the formation of (CoH)-H-III. Our results indicate that the mechanism involving a (CoH)-H-II intermediate is the most likely.
引用
收藏
页码:12456 / 12458
页数:3
相关论文
共 40 条
[1]  
[Anonymous], 1980, J CHEM PHYS, DOI DOI 10.1063/1.438955
[2]  
[Anonymous], CHEM SOC PERKIN T
[3]  
[Anonymous], 2004, GAUSSIAN03 REV E 01
[4]   Cobaloximes as functional models for hydrogenases. 2. proton electroreduction catalyzed by difluoroborylbis(dimethylglyoximato)cobalt(II) complexes in organic media [J].
Baffert, Carole ;
Artero, Vincent ;
Fontecave, Marc .
INORGANIC CHEMISTRY, 2007, 46 (05) :1817-1824
[5]   Quantum calculation of molecular energies and energy gradients in solution by a conductor solvent model [J].
Barone, V ;
Cossi, M .
JOURNAL OF PHYSICAL CHEMISTRY A, 1998, 102 (11) :1995-2001
[6]   DENSITY-FUNCTIONAL THERMOCHEMISTRY .3. THE ROLE OF EXACT EXCHANGE [J].
BECKE, AD .
JOURNAL OF CHEMICAL PHYSICS, 1993, 98 (07) :5648-5652
[7]   Hydrogen evolution by cobalt tetraimine catalysts adsorbed on electrode surfaces [J].
Berben, Louise A. ;
Peters, Jonas C. .
CHEMICAL COMMUNICATIONS, 2010, 46 (03) :398-400
[8]   Energies, structures, and electronic properties of molecules in solution with the C-PCM solvation model [J].
Cossi, M ;
Rega, N ;
Scalmani, G ;
Barone, V .
JOURNAL OF COMPUTATIONAL CHEMISTRY, 2003, 24 (06) :669-681
[9]   Mechanism of H2 Evolution from a Photogenerated Hydridocobaloxime [J].
Dempsey, Jillian L. ;
Winkler, Jay R. ;
Gray, Harry B. .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2010, 132 (47) :16774-16776
[10]   Kinetics of Electron Transfer Reactions of H2-Evolving Cobalt Diglyoxime Catalysts [J].
Dempsey, Jillian L. ;
Winkler, Jay R. ;
Gray, Harry B. .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2010, 132 (03) :1060-1065