Dissociation dynamics

Stock C, Li X, Keller H-M, Schinke R and Temps F 1997 Unimolecular dissociation dynamics of highly vibrationally excited DCO x-A t- I- Investigation of dissociative resonance states by stimulated emission pumping spectroscopy J. Cham. Phys. 106 5333-58... 

Recently, we [61] applied this method to model the (HOCO) photodetachment experiments of Continetti and co-workers [62]. We are currently using the method to study the dissociation dynamics other four-atom systems, including hydrogen peroxide and formaldehyde. 

Because the pathway to H + HCO on So is barrierless (with a loose TS), whereas the pathway on Ti has an exit barrier (tight TS), the dissociation dynamics of the two pathways can be expected to differ markedly. Measuring the translational energy release and the product state distributions of the HCO fragment are therefore appropriate experimental techniques for exploring this competition. 

The fructose-specific PTS in R. sphaeroides is simpler than the one in E. coli or S. typhimurium in that it consists of only two proteins. Besides the fructose specific ll , a class II enzyme, there is only one cytoplasmic component called soluble factor (SF) [48]. We now know that SF consists of IIl , HPr and E-I covalently linked [109]. 11 and SF form a membrane-bound complex whose association-dissociation dynamics is much slower than the turnover of the system. Therefore, the complex is the actual catalytic unit in the overall reaction and P-enolpyruvate is the direct phosphoryl group donor [102],... 

Results of a PEPICO study of the dissociation dynamics of 2-bromobutane ions have been analysed with tunnelling-corrected RRKM statistical theory using vibrational frequencies obtained from ab initio MO calculations. It has been concluded that the slow rate of loss of HBr, to form the but-2-ene ion, occurs via a concerted mechanism in which tunnelling is a feature of the proton transfer. 

Alconcel, L. S. Deyerl, H.-J. DeClue, M. Continetti, R. E. Dissociation Dynamics and Stability of Cyclic Alkoxy Radicals and Alkoxide Anions. J. Am. Chem. Soc. 2001,123, 3125-3132. 

Yount WC, Juwarker H, Craig SL. Orthogonal control of dissociation dynamics relative to thermodynamics in a main-chain reversible polymer. J Am Chem Soc 2003 125 15302-15303. 

Hatano, Y. Dissociation dynamics of superexcited molecules. In The Physics of Electronic and Atomic Collisions, Dube, L.J. Mitchell, J.B.A. McConkey, J.W. Brion, C.E. AIP Press New York, 1995 67 p. 

Moore, T. A., M. Okumura, M. Tagawa, and T. K. Minton, Dissociation Dynamics of C10N02 and Relative Cl and O Product Yields following Photoexcitation at 308 nm, Faraday Discuss., 100, 295-307 (1995). 

Y. C. Han, B. C. Shepler, J. M. Bowman. Quasiclassical trajectory calculations of the dissociation dynamics of CH(3)CHO at high energy yield many products, /. Phys. Chem. Lett., 2 1715-1719 (2011). 

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