The reaction of cobaloximes with hydrogen: Products and thermodynamics

Estes, Deven P.; Grills, David C.; Norton, Jack R.

doi:10.1021/ja508200g

Title: The reaction of cobaloximes with hydrogen: Products and thermodynamics

Journal Article · Wed Nov 26 00:00:00 EST 2014 · Journal of the American Chemical Society

DOI:https://doi.org/10.1021/ja508200g· OSTI ID:1183829

Estes, Deven P. ^[1]; Grills, David C. ^[2]; Norton, Jack R. ^[1]

Columbia Univ., New York, NY (United States)
Brookhaven National Lab. (BNL), Upton, NY (United States)

In this study, a cobalt hydride has been proposed as an intermediate in many reactions of the Co(dmgBF₂)₂L₂ system, but its observation has proven difficult. We have observed the UV–vis spectra of Co(dmgBF₂)₂L₂ (1) in CH₃CN under hydrogen pressures up to 70 atm. A Co(I) compound (6), with an exchangeable proton, is eventually formed. We have determined the bond dissociation free energy and pKa of the new O–H bond in 6 to be 50.5 kcal/mol and 13.4, respectively, in CH₃CN, matching previous reports.

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Research Organization:: Brookhaven National Laboratory (BNL), Upton, NY (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: SC00112704

OSTI ID:: 1183829

Report Number(s):: BNL-107850-2015-JA; R&D Project: CO026; KC0304030

Journal Information:: Journal of the American Chemical Society, Vol. 136, Issue 50; ISSN 0002-7863

Publisher:: American Chemical Society (ACS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 93 works

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Cobaloxime-catalyzed hydration of terminal alkynes without acidic promoters Hou, Shengtai; Yang, Hongjian; Cheng, Bin Chemical Communications, Vol. 53, Issue 51 https://doi.org/10.1039/c7cc03919k	journal	January 2017
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