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Frontispiece: Bimetallic Cooperativity in Proton Reduction with an Amido‐Bridged Cobalt Catalyst
Author(s) -
Kpogo Kenneth K.,
Mazumder Shivnath,
Wang Denan,
Schlegel H. Bernhard,
Fiedler Adam T.,
Verani Cláudio N.
Publication year - 2017
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201783963
Subject(s) - bimetallic strip , protonation , cobalt , cooperativity , catalysis , moiety , chemistry , center (category theory) , proton , crystallography , electron transfer , photochemistry , stereochemistry , inorganic chemistry , ion , physics , organic chemistry , biochemistry , quantum mechanics
The bimetallic catalyst [Co II 2 (L 1 )(bpy) 2 ]ClO 4 ( 1 ) was investigated both experimentally and theoretically to probe the cooperative activity among the cobalt centers toward proton reduction to dihydrogen. Mechanistically, a [Co I Co I ] core acts by protonation of one Co I center that triggers a sequential 2e − transfer where each Co I center donates one electron to the H + . This bimetallic cooperativity arises from the close proximity of the cobalt centers and the appropriate orbital topology, and avoids the formation of the high‐valent Co III –H − moiety required in monometallic catalysts. For more information, see the Full Paper by C. Verani et al. on page 9272 ff. Artwork by Dr. Da Li, WSU 2017.