| 溶液中外氛电子转移反应的电子传递系数的量子效应 |
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| 引用本文： | 邵明坤,段春生,周正宇,徐键,杜冬梅,张静,周欣明.溶液中外氛电子转移反应的电子传递系数的量子效应[J].曲阜师范大学学报,1999,25(2):70-72. |
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| 作者姓名： | 邵明坤 段春生 周正宇 徐键 杜冬梅 张静 周欣明 |
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| 作者单位： | [1]临沂师范学院化学系 [2]青岛师范学院 |
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| 基金项目： | 国家自然科学基金,山东省自然科学基金 |
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| 摘 要： | 用黄金规则和鞍点近似估算了电子转移速率的重要参数。考虑到量子效应对过渡金属氧化－还原的电子传递系数是重要的参量，采用了合适的光谱和光电发射，并根据已报导的电子耦合矩阵元的数据。
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| 关 键 词： | 外氛电子转移反应 传递系数 外氛重组能 电子转移速率 |
QUANTUM EFFECTS ON ELECTRONIC TRANSMISSION COEFFICIENTS FOR OUTER-SPHERE ELECTRON EXCHANGE REACTION IN SOLUTION |
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| Shao Mingkun,Duan Chunsheng,Zhou Zhengyu,Xu Jian,Du Dongmei,Zhang Jing,Zhou Xinming.QUANTUM EFFECTS ON ELECTRONIC TRANSMISSION COEFFICIENTS FOR OUTER-SPHERE ELECTRON EXCHANGE REACTION IN SOLUTION[J].Journal of Qufu Normal University(Natural Science),1999,25(2):70-72. |
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| Authors: | Shao Mingkun Duan Chunsheng Zhou Zhengyu Xu Jian Du Dongmei Zhang Jing Zhou Xinming |
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| Abstract: | The Golden rule and saddle point approximation are employed to evaluate the crucial parameters determining the electron transfer rate, electronic transmission coefficient quantitatively for electron exchange reactions involving transition-metal redox couples considering quantum effects. Adopting appropriate spectroscopic and photoemission data, and the reported value for electronic coupling matrix element, reasonable results are obtained and compared in term of classical and quantum mechanical theory. Investigation shows that for such reactions occurred at room temperature, the values for the electronic transmission coefficient are found to be less than or close to unity. The quantum effect increase the absolute rates by several times, which are not dramatic but still should be considered for complementary purpose. |
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| Keywords: | Outer_sphere electron transfer reaction Transmission coefficient Outer_sphere recoganization energy Electron transfer rate |
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