化学学报 ›› 1993, Vol. 51 ›› Issue (4): 328-333. 上一篇    下一篇

研究论文

2, 5-二间氮杂氧茚氢醌激发态质子转移反应机理的研究

徐文国;封继康;王永宏;孙家钟   

  1. 吉林大学化学系;吉林大学理论化学研究所
  • 发布日期:1993-04-15

A study of proton transfer reaction mechanism of bis-2, 5-(2-benzoxazolyl)hydroquinone in excited-state

XU WENGUO;FENG JIKANG;WANG YONGHONG;SUN JIAZHONG   

  • Published:1993-04-15

用AM1+INDO/SDCI方法对2, 5-二间氮杂氧茚氢醌分子内激发态质子转移反应进行了理论研究, 求得了基态和激发态反应的位能面、势垒、过渡态, 并对有关化合物的光谱进行了理论指认, 所有理论计算结果均与实验结果符合较好。在此基础上对反应机理进行了探讨, 认为有利的是单质子转移反应不是双质子转移反应。

关键词: 反应机理, 激发态, 茚 P, 势垒, 位能面, 微分重叠间忽略近似, 氢醌, 过渡态, 质子转移

AM1 and INDO/SDCI calcns. have been performed on a excited-state intramol. proton transfer reaction of bis-2,5-(2-benzoxazolyl)hydroquinone (I). The results of potential energy surface, barrier, and transition state for the title reaction have been obtained. The calculated excited-state spectra yield a consistent interpretation of data from experimental observations. Finally, the reaction mechanism has been suggested, it is shown that only single proton transfer takes place rather than double proton transfer does.

Key words: REACTION MECHANISM, EXCITED STATE, INDENE P, POTENTIAL BARRIER, POTENTIAL ENERGY SURFACE, INTERMEDIATE NEGLECT OF DIFFERENTIAL OVERLAP APPROXIMATION (IND, HYDROQUINONE, TRANSITION STATE

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