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Hydrogen Peroxide Coordination to Cobalt(II) Facilitated by Second‐Sphere Hydrogen Bonding
Author(s) -
Wallen Christian M.,
Palatinus Lukáš,
Bacsa John,
Scarborough Christopher C.
Publication year - 2016
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201606561
Subject(s) - adduct , chemistry , cobalt , coordination sphere , ligand (biochemistry) , redox , hydrogen peroxide , hydrogen bond , metal , medicinal chemistry , hydrogen , stereochemistry , crystallography , photochemistry , inorganic chemistry , molecule , organic chemistry , receptor , biochemistry
M(H 2 O 2 ) adducts have been postulated as intermediates in biological and industrial processes; however, only one observable M(H 2 O 2 ) adduct has been reported, where M is redox‐inactive zinc. Herein, direct solution‐phase detection of an M(H 2 O 2 ) adduct with a redox‐active metal, cobalt(II), is described. This Co II (H 2 O 2 ) compound is made observable by incorporating second‐sphere hydrogen‐bonding interactions between bound H 2 O 2 and the supporting ligand, a trianionic trisulfonamido ligand. Thermodynamics of H 2 O 2 binding and decay kinetics of the Co II (H 2 O 2 ) species are described, as well as the reaction of this Co II (H 2 O 2 ) species with Group 2 cations.