| A Theoretical Study on the Photochromic Mechanism of 1-Phenyl-3-methyl-4-（6-hydro-4-amino-5-sulfo-2,3-pyrazine）-pyrazole-5-one |
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| 引用本文： | 刘岸杰,贾殿赠,吴冬玲,刘浪,郭继玺.A Theoretical Study on the Photochromic Mechanism of 1-Phenyl-3-methyl-4-（6-hydro-4-amino-5-sulfo-2,3-pyrazine）-pyrazole-5-one[J].结构化学,2014,33(6):20-28. |
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| 作者姓名： | 刘岸杰 贾殿赠 吴冬玲 刘浪 郭继玺 |
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| 作者单位： | Institute of Applied Chemistry, Xinjiang University, Urumqi 830046, China |
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| 基金项目： | Supported by the Natural Science Foundation of Xinjiang Uygur Autonomous Region(No.2013211B04) |
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| 摘 要： | The photochromic mechanism of 1-phenyl-3-methyl-4-（6-hydro-4-amino-5-sulfo-2,3- pyrazine）-pyrazole-5-one has been investigated using the density functional theory（DFT）. The solvent effect is simulated using the polarizable continuum model（PCM） of the self-consistent reaction field theory. According to the crystal structure of the title compound, an intramolecular proton transfer mechanism from enol to keto form was proposed to interpret its photochromism. Bader＇s atom-in-molecule（AIM） theory is used to investigate the nature of hydrogen bonds and ring structures. Time-dependent density functional theory（TDDFT） calculation results show that the photochromic process from enol to keto form is reasonable. The conformation and molecular orbital analysis of enol and keto forms explain why only intramolecular proton transfer is possible. The results from analyzing the energy and dipole moments of enol form, transition state and keto form in the gas phase and in different solvents have been used to assess the stability of the title compound.
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| 关 键 词： | 光致变色 变色机理 磺基 氨基 水力 苯基 吡嗪 吡唑 |
A Theoretical Study on the Photochromic Mechanism of 1-Phenyl-3-methyl-4-(6-hydro-4-amino-5-sulfo-2,3-pyrazine)-pyrazole-5-one |
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| LIU An-Jie
,
JIA Dian-Zeng
,
WU Dong-Ling
,
LIU Lang
,
GUO Ji-Xi.A Theoretical Study on the Photochromic Mechanism of 1-Phenyl-3-methyl-4-(6-hydro-4-amino-5-sulfo-2,3-pyrazine)-pyrazole-5-one[J].Chinese Journal of Structural Chemistry,2014,33(6):20-28. |
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| Authors: | LIU An-Jie JIA Dian-Zeng WU Dong-Ling LIU Lang GUO Ji-Xi |
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| Institution: | Institute of Applied Chemistry, Xinjiang University, Urumqi 830046, China |
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| Abstract: | The photochromic mechanism of 1-phenyl-3-methyl-4-(6-hydro-4-amino-5-sulfo-2,3- pyrazine)-pyrazole-5-one has been investigated using the density functional theory(DFT). The solvent effect is simulated using the polarizable continuum model(PCM) of the self-consistent reaction field theory. According to the crystal structure of the title compound, an intramolecular proton transfer mechanism from enol to keto form was proposed to interpret its photochromism. Bader's atom-in-molecule(AIM) theory is used to investigate the nature of hydrogen bonds and ring structures. Time-dependent density functional theory(TDDFT) calculation results show that the photochromic process from enol to keto form is reasonable. The conformation and molecular orbital analysis of enol and keto forms explain why only intramolecular proton transfer is possible. The results from analyzing the energy and dipole moments of enol form, transition state and keto form in the gas phase and in different solvents have been used to assess the stability of the title compound. |
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| Keywords: | DFT solvent effects AIM TDDFT molecular orbital |
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