title: Electrocatalytic water oxidation by a molecular cobalt complex through a high valent cobalt oxo intermediate.
abstract: Biuret-modified tetraamidomacrocyclic cobalt complex [CoIII-bTAML]-is shown to catalyze electrochemical water oxidation at basic pH leading to the formation of O2. Electrochemical and spectroscopic studies indicate a high valent cobalt oxo intermediate isoelectronic to CoV(O) as the active oxidant. The kinetic isotope effect of 8.63 indicates an atom proton transfer mechanism.
authors.affiliation: Chemical Engineering and Process Development Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, India. ss.sengupta@ncl.res.in.
authors.forename: Debasree
authors.initials: D
authors.lastname: Das
authors.affiliation: Chemical Engineering and Process Development Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, India. ss.sengupta@ncl.res.in.
authors.forename: Santanu
authors.initials: S
authors.lastname: Pattanayak
authors.affiliation: Chemical Engineering and Process Development Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, India. ss.sengupta@ncl.res.in.
authors.forename: Kundan K
authors.initials: KK
authors.lastname: Singh
authors.affiliation: Physical and Materials Chemistry Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, India.
authors.forename: Bikash
authors.initials: B
authors.lastname: Garai
authors.affiliation: Chemical Engineering and Process Development Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, India. ss.sengupta@ncl.res.in.
authors.forename: Sayam
authors.initials: S
authors.lastname: Sen Gupta