低温固相におけるイオンの量子力学的トンネル反応

概要

論文の詳細を見る
Tunneling reactions of ions produced by radiolysis in the solid phase at low temperature have been reviewed. First, the clear evidences for tunneling reactions were shown in the reactions H(D)+H2 (D2, HD) that are the simplest fundamental reaction. Second, a large isotope effect on a proton transfer reaction from ethanol to benzene anions at 77 K was interpreted in terms of a tunneling effect. Third, a tunneling detachment of a H2 molecule from a 2,3-dimethylbutane cation was observed at 77 K. Fourth, it is concluded here that the tunneling reaction in the solid phase at low temperature is affected by motions of reactive species and surrounding molecules. Thus, the rate constant (kT) for the reaction is expressed as follows. kT=k(tunnel)×F(motion), where k(tunnel) is the rate constant for a tunneling process itself and F(motion) represents the motion of molecules.
日本質量分析学会の論文
1995-10-30