scholarly journals Hydrogen-atom and oxygen-atom transfer reactivities of iron(iv)-oxo complexes of quinoline-substituted pentadentate ligands

2022 ◽  
Author(s):  
Sandip Munshi ◽  
Arup Sinha ◽  
Solomon Yiga ◽  
Sridhar Banerjee ◽  
Reena Singh ◽  
...  
Keyword(s):  
Hydrogen Atom ◽  
Oxygen Atom ◽  
Electronic Properties ◽  
Atom Transfer ◽  
Oxygen Atom Transfer ◽  
Oxo Complexes ◽  
Pentadentate Ligands

The reactivities of Fe(iv) oxido complexes of two pentadentate ligands are related to steric and electronic properties of the ligands.

Nonheme Fe(IV) Oxo Complexes of Two New Pentadentate Ligands and Their Hydrogen-Atom and Oxygen-Atom Transfer Reactions

2015 ◽  
Vol 54 (15) ◽  
pp. 7152-7164 ◽  
Author(s):  
Mainak Mitra ◽  
Hassan Nimir ◽  
Serhiy Demeshko ◽  
Satish S. Bhat ◽  
Sergey O. Malinkin ◽  
...  
Keyword(s):  
Hydrogen Atom ◽  
Oxygen Atom ◽  
Transfer Reactions ◽  
Atom Transfer ◽  
Oxygen Atom Transfer ◽  
Oxo Complexes ◽  
Pentadentate Ligands ◽  
Oxygen Atom Transfer Reactions ◽  
Atom Transfer Reactions

Oxidation of organic sulphides. I. Interaction of cyclo hexyl methyl sulphide with hydroperoxides in alcohols

1954 ◽  
Vol 224 (1158) ◽  
pp. 389-398 ◽  
Keyword(s):  
Hydrogen Atom ◽  
Oxygen Atom ◽  
Exchange Process ◽  
Reaction Rates ◽  
Bimolecular Reaction ◽  
Atom Transfer ◽  
Oxygen Atom Transfer ◽  
First Order ◽  
Solvent Acidity

Cyclo hexyl methyl sulphide is oxidized quantitatively to the sulphoxide by alcoholic solutions of cyclo hexenyl and t -butyl hydroperoxides at moderate temperatures. Kinetically the oxida­tion appears to be a simple bimolecular reaction, first-order with respect to both the sulphide and hydroperoxide. However, the reaction rates vary in different alcohols in the order of varying solvent acidity, and correspondingly the addition of much stronger acids produces powerful catalysis. The solvent and the acids clearly play a part in the reaction, and it is concluded that the actual oxidant is a cyclic complex between the hydroperoxide and a hydrogen-donating molecule, oxygen atom transfer to the sulphide being promoted by a synchronous hydrogen atom exchange process within the complex. Energies and entropies of activation for the oxidation under various conditions are reported and their significance discussed.

Solvent Effects on the Oxidation of RuIVO to ORuVIO by MnO4-. Hydrogen-Atom versus Oxygen-Atom Transfer

2007 ◽  
Vol 129 (44) ◽  
pp. 13646-13652 ◽  
Author(s):  
William W. Y. Lam ◽  
Wai-Lun Man ◽  
Chi-Fai Leung ◽  
Chun-Yuen Wong ◽  
Tai-Chu Lau
Keyword(s):  
Hydrogen Atom ◽  
Oxygen Atom ◽  
Solvent Effects ◽  
Atom Transfer ◽  
Oxygen Atom Transfer

scholarly journals Oxygen-Atom Transfer Reactivity of Axially Ligated Mn(V)–Oxo Complexes: Evidence for Enhanced Electrophilic and Nucleophilic Pathways

2014 ◽  
Vol 136 (39) ◽  
pp. 13845-13852 ◽  
Author(s):  
Heather M. Neu ◽  
Tzuhsiung Yang ◽  
Regina A. Baglia ◽  
Timothy H. Yosca ◽  
Michael T. Green ◽  
...  
Keyword(s):  
Oxygen Atom ◽  
Atom Transfer ◽  
Oxygen Atom Transfer ◽  
Oxo Complexes

Direct oxygen atom transfer versus electron transfer mechanisms in the phosphine oxidation by nonheme Mn(iv)-oxo complexes

2017 ◽  
Vol 53 (67) ◽  
pp. 9352-9355 ◽  
Author(s):  
Yong-Min Lee ◽  
Mi Yoo ◽  
Heejung Yoon ◽  
Xiao-Xi Li ◽  
Wonwoo Nam ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Oxygen Atom ◽  
Phenyl Group ◽  
Steric Effects ◽  
Atom Transfer ◽  
Oxygen Atom Transfer ◽  
Oxo Complexes ◽  
Transfer Mechanisms

Direct oxygen atom transfer from Mn(iv)-oxo to Ph3P occurs, exhibiting significant steric effects of the ortho-substitution of the phenyl group, whereas in the presence of HOTf, the mechanism is switched to electron transfer from Ph3P to Mn(iv)-oxo, exhibiting no steric effects.

scholarly journals Tuning the reactivity of mononuclear nonheme manganese(iv)-oxo complexes by triflic acid

2015 ◽  
Vol 6 (6) ◽  
pp. 3624-3632 ◽  
Author(s):  
Junying Chen ◽  
Heejung Yoon ◽  
Yong-Min Lee ◽  
Mi Sook Seo ◽  
Ritimukta Sarangi ◽  
...  
Keyword(s):  
Oxygen Atom ◽  
Transfer Reactions ◽  
Atom Transfer ◽  
Triflic Acid ◽  
Oxygen Atom Transfer ◽  
Oxo Complexes ◽  
Atom Transfer Reactions

Binding of two HOTf molecules to MnIV(O) species resulted in contrasting effects on the reactivities in oxygen atom transfer and H-atom transfer reactions.

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