Ground and electronically excited singlet state structures of the syn and anti rotamers of 5-hydroxyindole.

Ground and electronically excited singlet state structures of the syn and anti rotamers of 5-hydroxyindole.
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5-羟基吲哚顺式和反式旋转异构体的基态和电子激发单线态结构

DOI:
10.1021/jp3042523
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发表时间:
2012
期刊:
The journal of physical chemistry. A
影响因子:
--
通讯作者:
Schmitt
Schmitt
中科院分区:
--
文献类型:
--
作者:
Oeltermann;Schmitt

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用旋转分辨电子光谱法测量了5-羟基吲哚的电子起源带A和B。从实验转动常数与从头计算结果的比较中,我们可以把A带归属于同构象,而B带归属于反构象。这些构象异构体的羟基相对于分子的其余部分的取向不同,具有相当不同的S1态寿命。对于这一令人惊讶的发现,最可能的解释是两种构象的ππ* 态与排斥πσ* 态的不同圆锥相交。
The electronic origin bands A and B of 5-hydroxyindole were measured using rotationally resolved electronic spectroscopy. From comparison of the experimental rotational constants to the results of ab initio calculated structures, we could make the assignment of band A being due to thesynconformer and of band B being due to theanticonformer. These conformers, which differ in the orientation of the hydroxy group with respect to the rest of the molecule, have considerably different S1state life times. The most probable explanation for this surprising finding is a different conical intersection of the ππ* states of both conformers with the repulsive πσ* state.
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发表时间: 2009-02-26
影响因子: 3.3
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位置很重要:羟基和甲氧基取代的吲哚中竞争的 O-H 和 N-H 光解离途径。
DOI: --
发表时间: 2011
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DOI: --
发表时间: 2010
影响因子: 4.4
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