Huckel-hubbard相关图 |
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引用本文: | 朱宏耀,江元生. Huckel-hubbard相关图[J]. 化学学报, 1993, 51(6): 527-533 |
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作者姓名: | 朱宏耀 江元生 |
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作者单位: | 吉林大学理论化学研究所;南京大学化学系 |
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摘 要: | Huckel模型和Heisnberg-Dirac模型考虑了两种不同的相互作用,前者为单电子作用,而后者仅考虑了电子相关作用,它们是 Hubbard 模型的两种极限情形.本文以四轨道四电子体系为例讨论了三种模型,所得到的Huckel-Hubbard相关图展示了它们的适用范围及其相互关系,这样处理具有代表性,可以推广到较大的共轭体系.
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关 键 词: | 共轭 电子态 成键 不可约表示 相关图 分子模型 休克尔分子轨道 HUCKEL-HUBBARD近似 |
On huckel-hubbard correlation diagrams |
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Abstract: | In order to contrast the HMO theory (HMO) with a simple valence bond theory (Heisenberg-Dirac model), which are two opposite asymptotic limit cases of the Hubbard model, Hubbard problems have been solved for four sites systems with four electrons. The Hueckel-Hubbard correlation diagrams, where employs a parameter: U/t, have been obtained for these system. From correlation diagrams some interested results have been deduced in detail.e |
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Keywords: | CONJUGATION ELECTRONIC STATES BONDING IRREDUABLE REPRESENTATION CORRELOGRAM MOLECULAR MODEL HUCKEL MOLECULAR ORBITAL |
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