|Title||ORTHO-DIRECTIONAL, META-DIRECTIONAL, PARA-DIRECTIONAL EFFECTS IN MUONIUM ADDITION TO BENZOIC-ACID IN WATER|
|Publication Type||Journal Article|
|Year of Publication||1990|
|Authors||Stadlbauer, JM, Barnabas, MV, Wu, Z, Walker, DC|
|Type of Article||Proceedings Paper|
|Keywords||CONSTANTS, CYCLOHEXADIENYL, LEVEL-CROSSING-RESONANCE, LIQUIDS, ORGANIC FREE-RADICALS, radicals|
Isomeric free radicals formed by Mu adding to o/m/p positions of benzoic acid in water were detected by LCR and the corresponding resonance positions and proton hyperfine coupling constants were obtained. There was an isotope effect of the ’second kind’ for these Mu-radicals in the range of 1.26-1.32. The ’fractional’ formation rate constants per site are 2.7 x 10(9), 0.45 x 10(9) and 0.85 x 10(9) M-1S-1 respectively. Ortho-addition dominates by a large factor, which is in accord with the electron-withdrawing character of the -COOH group.
|URL||<Go to ISI>://A1990EZ85600023|