Reactivity of Inorganic Radicals in Aqueous Solution

Stanbury, David M.

doi:10.1002/9780470602577.ch9

Cited by 6 publications

(13 citation statements)

References 202 publications

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“…production is rate-limiting, followed by association with NO giving N 2 O 3 , that hydrolyzes to nitrite. [7,14] Following several reports on the mechanisms, ONOONO, NO 2…”

Section: -mentioning

confidence: 99%

“…Remarkably, aqueous NO shows no significant tendency to dimerize, with an apparently unfavorable dimerization equilibrium constant. [14] In contrast, dimerization reactions for most inorganic radicals are very fast and effectively irreversible, except for NO 2 . , SO 2 .…”

Section: Properties Of Aqueous No and Redox Derivatives No + No - Hno No Xmentioning

confidence: 99%

“…, giving N 2 O 3 and NOCO 2 respectively. [14] Very fast reactions take place with biorelevant radicals as thiyl (RS . ), peroxyl (ROO . )…”

Section: -mentioning

confidence: 99%

“…Fast radical quenching by NO on enzyme systems serve as regulatory or inhibitory functions; many chain-carrying radicals oxidize important biological macromolecules, and a protective role for NO can be established. [1,7,14] . production is rate-limiting, followed by association with NO giving N 2 O 3 , that hydrolyzes to nitrite.…”

Section: -mentioning

confidence: 99%

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Coordination Chemistry of Nitric Oxide and Biological Signaling

Olabe

2020

scirevfew

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Nitric Oxide (NO) is a key intermediate in the nitrogen redox cycles that operate in soils, water and biological fluids, affording reversible interconversions between nitrates to ammonia and vice-versa. The discovery of its biosynthesis in mammals for signaling purposes generated a research explosion on the ongoing chemistry occurring in specific cellular compartments, centered on NO reactivity toward O2, thiols, amines, and transition metals, as well as derivatives thereof. The present review deals with the coordination chemistry of NO toward selected iron and ruthenium centers. We place specific attention to the three redox states of the nitrosyl group: NO+, NO and NO–/HNO, describing changes in structure and reactivity as coordination takes place. Noteworthy are the results with the most reduced nitroxyl-species that allow establishing the changes in the measurable pKa values for the HNO-bound complexes, also revealing the abrupt decrease in reducing power and trans-releasing abilities of the protonated species over the unprotonated ones, NO–. Comparative results using non-heme and heme proteins and models prove useful for suggesting further improvements in the current research status of complex enzymatic behavior.

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“…production is rate-limiting, followed by association with NO giving N 2 O 3 , that hydrolyzes to nitrite. [7,14] Following several reports on the mechanisms, ONOONO, NO 2…”

Section: -mentioning

confidence: 99%

Section: Properties Of Aqueous No and Redox Derivatives No + No - Hno No Xmentioning

confidence: 99%

“…, giving N 2 O 3 and NOCO 2 respectively. [14] Very fast reactions take place with biorelevant radicals as thiyl (RS . ), peroxyl (ROO . )…”

Section: -mentioning

confidence: 99%

Section: -mentioning

confidence: 99%

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Coordination Chemistry of Nitric Oxide and Biological Signaling

Olabe

2020

scirevfew

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“…In addition to their technological and scientific importance, hydrogen abstraction reactions have a simple mechanism that allows for detailed studies, and hence this class of reactions is very well-documented. 3,4 Reliable sources of data may be found in databases reviewing experimental studies for the gas-phase rate constants for the reactions of hydroxyl radical with alkanes and cycloalkanes spanning temperature ranges from approximately 180 to 2000 K. [5][6][7][8][9][10][11] It is common practice to fit the experimental values to an empirical model, usually the Arrhenius equation, 12 to obtain kinetic parameters. The Arrhenius model contains two parameters: the pre-exponential factor and the activation energy, which are strictly applicable within the temperature interval used in the fitting.…”

Section: Introductionmentioning

confidence: 99%

Development of Predictive Models of the Kinetics of a Hydrogen Abstraction Reaction Combining Quantum-Mechanical Calculations and Experimental Data

Diamanti

Adjiman

Piccione

et al. 2017

Ind. Eng. Chem. Res.

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The importance of developing accurate modelling tools for the prediction of reaction kinetics is well recognised. In this work, a thorough investigation of the suitability of quantum mechanical (QM) calculations to predict the effect of temperature on the rate * To whom correspondence should be addressed provide good correlated rate-constant values and to be competitive with conventional kinetic models, i.e., the Arrhenius and the three-parameter Arrhenius models. This combination of QM-calculated and experimental data sources is proved particularly beneficial when fitting to scarce experimental data. In this case, the model built on the hybrid strategy has parameters with significantly reduced uncertainty (reflected in the much narrower 95% confidence intervals) compared with the conventional kinetic models while also capturing well the experimental reaction rates with a MAE ln of the rate constant of 0.118. This provides a useful strategy for kinetic model development.

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ChemInform Abstract: Reactivity of Inorganic Radicals in Aqueous Solution

Stanbury

2011

ChemInform

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Reactivity of Inorganic Radicals in Aqueous Solution

Cited by 6 publications

References 202 publications

Coordination Chemistry of Nitric Oxide and Biological Signaling

Coordination Chemistry of Nitric Oxide and Biological Signaling

Development of Predictive Models of the Kinetics of a Hydrogen Abstraction Reaction Combining Quantum-Mechanical Calculations and Experimental Data

ChemInform Abstract: Reactivity of Inorganic Radicals in Aqueous Solution

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