title: The reaction of cobaloximes with hydrogen: products and thermodynamics.
abstract: 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 of up to 70 atm. A Co(I) compound (6a) with an exchangeable proton is eventually formed. We have determined the bond dissociation free energy and pK(a) of the new O-H bond in 6a to be 50.5 kcal/mol and 13.4, respectively, in CH3CN, matching previous reports.
authors.affiliation: Department of Chemistry, Columbia University , 3000 Broadway, New York, New York 10027, United States.
authors.forename: Deven P
authors.initials: DP
authors.lastname: Estes
authors.forename: David C
authors.initials: DC
authors.lastname: Grills
authors.forename: Jack R
authors.initials: JR
authors.lastname: Norton