| Title | QUANTUM PHENOMENA AND SOLVENT EFFECTS ON ADDITION OF HYDROGEN ISOTOPES TO BENZENE AND TO DIMETHYLBUTADIENE |
| Publication Type | Journal Article |
| Year of Publication | 1990 |
| Authors | Roduner, E, Louwrier, PWF, Brinkman, GA, Garner, DM, Reid, ID, Arseneau, DJ, Senba, M, Fleming, DG |
| Journal | Berichte Der Bunsen-Gesellschaft-Physical Chemistry Chemical Physics |
| Volume | 94 |
| Pagination | 1224-1230 |
| Date Published | Nov |
| Type of Article | Proceedings Paper |
| ISBN Number | 0005-9021 |
| Keywords | ATOM, DIFFUSION, electron, ELEMENTARY REACTIONS, GASES, ISOTOPE EFFECTS, KINETICS, LIQUIDS, muonium, radicals, RATE CONSTANTS, solutions, WATER |
| Abstract | Rate constants have been measured for the reaction of the light hydrogen isotope muonium with benzene and 2,3-dimethylbutadiene-1,3 in the gas phase and in several solvents. Comparison with H atom data reveals (1) appreciable kinetic isotope effects, (2) a strong contribution of tunnelling for the activated reaction with benzene, (3) encounter controlled reaction for Mu addition to the diene, (4) a mass dependence of the diffusion constant of hydrogen isotopes in solution, and (5) an enhancement of the rate constant in solution over that in the gas phase by a factor, except for water, of the inverse Ostwald solubility coefficient for hydrogen. The isotope-dependent reduction of the solvent effect in water is tentatively ascribed to the dynamics of the clathrate-like structure when the hydrogen atom reacts. |
| URL | <Go to ISI>://A1990EU90600008 |
