Oxygen activation by metalloporphyrins related to peroxidase and cytochrome P-450. Direct observation of the oxygen-oxygen bond cleavage step

1986 ◽  
Vol 108 (24) ◽  
pp. 7834-7836 ◽  
Author(s):  
John T. Groves ◽  
Yoshihito. Watanabe
Keyword(s):  
Direct Observation ◽  
Bond Cleavage ◽  
Oxygen Activation ◽  
Oxygen Oxygen ◽  
Cleavage Step ◽  
Cytochrome P 450 ◽  
Oxygen Bond

Oxygen-Oxygen Bond Cleavage and Formation in Co(II) Mediated Stoichiometric O2 Reduction via the Potential Intermediacy of a Co(IV) Oxyl Radical

2018 ◽  
Author(s):  
Lucie Nurdin ◽  
Denis M. Spasyuk ◽  
Laura Fairburn ◽  
Warren Piers ◽  
Laurent Maron
Keyword(s):  
Bond Cleavage ◽  
Peroxo Complex ◽  
Oxygen Oxygen ◽  
O2 Reduction ◽  
Oxygen Bond ◽  
Pentadentate Ligand

Diprotonation of a remarkably stable, toluene soluble cobalt peroxo complex supported by a neutral, dianionic pentadentate ligand leads to facile O-O bond cleavage and production of a highly reactive Co(IV) oxyl cation intermediate that dimerizes and releases O<sub>2</sub>. These processes are relevant to both O<sub>2</sub> reduction and O<sub>2</sub> evolution and the mechanism was probed in detail both experimentally and computationally.

scholarly journals Selective Formation of an FeIV O or an FeIII OOH Intermediate From Iron(II) and H2 O2 : Controlled Heterolytic versus Homolytic Oxygen-Oxygen Bond Cleavage by the Second Coordination Sphere

2018 ◽  
Vol 131 (3) ◽  
pp. 864-868 ◽  
Author(s):  
Khaled Cheaib ◽  
M. Qadri E. Mubarak ◽  
Katell Sénéchal-David ◽  
Christian Herrero ◽  
Régis Guillot ◽  
...  
Keyword(s):  
Coordination Sphere ◽  
Bond Cleavage ◽  
Oxygen Oxygen ◽  
Second Coordination Sphere ◽  
Selective Formation ◽  
Oxygen Bond
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