Understanding the Mechanisms of Cobalt-Catalyzed Hydrogenation and Dehydrogenation Reactions
作者:Guoqi Zhang、Kalyan V. Vasudevan、Brian L. Scott、Susan K. Hanson
DOI:10.1021/ja402679a
日期:2013.6.12
resting state during the alcohol dehydrogenation reaction. Complex 13 catalyzed the hydrogenation of styrene but showed no catalytic activity for the roomtemperaturehydrogenation of acetophenone. These results support the involvement of metal-ligand cooperativity in the roomtemperaturehydrogenation of ketones but not the hydrogenation of olefins or the acceptorless dehydrogenation of alcohols. Mechanisms
Influences of Bifunctional PNP-Pincer Ligands on Low Valent Cobalt Complexes Relevant to CO<sub>2</sub> Hydrogenation
作者:Matthew R. Mills、Charles L. Barnes、Wesley H. Bernskoetter
DOI:10.1021/acs.inorgchem.7b02931
日期:2018.2.5
Pincer ligated coordinationcomplexes bearing bifunctional sites have been at the center of recent developments in reversible hydrogenation catalysis, especially in cases utilizing base metals. The influence of bifunctionalligands on low valent cobalt complexes is detailed here using comparisons between the PNP-pincer ligands MeN[CH2CH2(PR2)]2 and HN[CH2CH2(PR2)]2 (R = iPr, Cy). Comparative catalytic
Alkene Hydrogenation Catalyzed by Nickel Hydride Complexes of an Aliphatic PNP Pincer Ligand
作者:Kalyan V. Vasudevan、Brian L. Scott、Susan K. Hanson
DOI:10.1002/ejic.201200758
日期:2012.10
To investigate metal–ligand cooperativity as a strategy for promoting nickel-catalyzed alkene hydrogenation, cationic and neutral nickel(II) hydride complexes of the aliphatic pincer ligand PNHPCy PNHPCy = HN[CH2CH2P(Cy)2]2} have been synthesized and characterized. Cationic hydride complex [(PNHPCy)Ni(H)]BPh4 (2) catalyzed the hydrogenation of styrene and 1-octene under mild conditions. Only low conversion