Casscf Calculations for Neutral and Anion Radical States of Several π-Conjugated Bis-Methylene Systems

Casscf Calculations for Neutral and Anion Radical States of Several π-Conjugated Bis-Methylene Systems
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Casscf 计算几种 π 共轭双亚甲基体系的中性和阴离子自由基态

DOI:
10.1080/10587259708044603
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发表时间:
1997
影响因子:
0.7
通讯作者:
K. Yamaguchi
K. Yamaguchi
中科院分区:
化学4区
文献类型:
--
作者:
D. Yamaki;S. Takeda;W. Mori;K. Yamaguchi

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对两个卡宾通过π共轭连接在一起的模型体系的中性态和阴离子态进行了CASSCF计算,研究了π或ρ电子掺杂引起的基态自旋态的变化。用CASSCF能量梯度技术对这些阴离子自由基物种进行了全几何构型优化。结果表明,双亚甲基部分的优化几何构型主要取决于电子组态,特别是σ电子的数目,而阴离子自由基的基自旋态也对自组织光学分子轨道的对称性很敏感。
Abstract The CASSCF calculations were carried out for the neutral and anionic states of several model systems including two carbenes linked together through π-conjugation to investigate variations of the ground spin states induced by π- or ρ- electron doping. The full geometry optimizations of these anion radical species were performed by the CASSCF energy gradient technique. It was found that the optimized geometries for the bis-methylene moieties largely depend on the electron configurations, particularly the number of σ-electrons, and the ground spin states for the anion radicals are also sensitive to the symmetry of the SOMO.
DOI: 10.1007/bf01303701
发表时间: 1986-01-01
期刊: ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER
影响因子: --
作者:
BEDNORZ, JG;MULLER, KA
通讯作者: MULLER, KA
Koichi Itoh:“高自旋态的新型有机离子 II:基态自旋多重性的测定和间亚苯基双(苯基亚甲基)单阴离子的 ^1H-ENDOR 研究”J.Am.Chem.Soc。
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Koichi Itoh:“高自旋态的新型有机离子 III:间亚苯基双(苯基亚甲基)单阳离子的 ESR 和 ^1H-ENDOR 研究”J.Am.Chem.Soc。
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