Rate constants and mechanisms

There are only few main group metal ion hydrates open to detailed mechanistic study of water exchange by NMR Be , Mg , Al" , Ga" and to a less extent, In" . They provide the opportunity to study the influence of size and charge on exchange rate constant and mechanism without the complicating effects of the variation of the electronic occupancy of the d-orbitals. All of the alkali ions as well as Ca , Sr, and Ba are very labile as a consequence of their relatively low surface charge density. However, indications on water exchange on Sr " can be obtained from... 

Determination of reaction rate laws, rate constants, and mechanisms... 

Hatakeyama, S., N. Washida, and H. Akimoto, Rate Constants and Mechanisms for the Reaction of OH(OD) Radicals with Acety-... 

Jolly, G. S P. J. McKenney, D. L Singleton, G. Paraskevopoulos, and A. R. Brossard, Rate Constant and Mechanism for the Reaction of Hydroxyl Radical with Formic Acid, 90, 6557-6562... 

Rate constants and mechanisms for reaction of the ions with... 

Gilbert BC, Lindsay Smith JR, Taylor P, Ward S, Withwood AC (1999) The interplay of electronic, steric and stereoelectronic effects in hydrogen-atom abstraction reactions of S04, revealed by EPR spectroscopy. J Chem Soc Perkin Trans 2 1631-1637 Flasegawa K, Neta P (1978) Rate constants and mechanisms of reaction of Cl2 radicals. J Phys Chem 82 856-859... 

The reduction of cobalt(III) acetylacetonates with chromium(II) salts has been studied in detail. In particular, a series of mixed chelates has been investigated to elucidate changes of the rate constants and mechanisms based on ligand field effects . As far as chromium(II) salts are concerned, the rate constants of the reduction of [Co(acac)3 en ] "+ vary approximately as predicted from ligand field arguments, with the weaker field acetylacetonate conferring a faster rate of reduction, fcobs = 28.5 s for n = 0, than the stronger... 

Jolly, G.S., McKenney, D.J., Singleton, D.L., Paraskevopoulos, G., Bossard, A.R. (1986) Rate constant and mechanism for the reaction of hydroxyl radical with formic acid. J. Phys. Chem. 90, 6557-6562. 

Butkovskaya N. 1., A. Kukui and N. Pouvesle, Q. Le Bras Rate constant and mechanism of the reaction of OH radicals with acetic acid in the temperature range of 229-300 K, J. Phys. Chem. A108 (2004) 7021-7026. 

Hagesawa, K., and Neta, P-, Rate constants and mechanisms of reaction for Cl2 radicals. J. Phys. Chem. 82, 854 (1978). 

We hope that the present chapter will serve as a concise record of the achievements of these workers during the decade (1967 to 1978) of Intense Interest In the determination of OH rate constants and mechanisms of OH radical reactions In the gas phase. 

Neta P, Madhavan V, Zemel H, Fessenden RW. (1977). Rate constants and mechanism of reaction of S04 with aromatic compounds. Journal of the American Chemical Society 99(1) 163-164. 

To illustrate the experimental determination of rate constants and mechanisms we turn to another set of reactions important in the mechanism of the Belousov-Zhabotinskii reaction. The overall reaction for the bromination of malonic acid is... 

As stated earlier in the section, for a comprehensive investigation of mechanism of oscillatory reactions, detailed study of kinetics (determination of rate constants) and mechanism of component reactions is also needed as a supporting study to provide information relevant for computer modelling of modified FKN mechanism. 

Hatakeyama, S., Okuda, M., Akimoto, H. Formation of sulfur dioxide and methanesulfonic acid in the photooxidation of dimethyl sulfide in the air. Geophys. Res. Lett. 9, 583-586 (1982) Hatakeyama, S., Washida, N., Akimoto, H. Rate constants and mechanisms for the reaction of hydroxyl (OD) radicals with acetylene, propyne, and 2-butyne in air at 297 2 K. J. Phys. Chem. 90, 173-178 (1986)... 

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