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首页> 外文期刊>Journal of computational and theoretical nanoscience >Transmission, Correlation Analysis and Substituent Electronic Effects on Mulliken Charges of Para-Substituted 1-(arylmethylene)-1HCyclopropa[ b]Benzenes, and Para-Substituents 1-(diarylmethylene)-1H-Cyclopropa[b]Naphthalenes
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Transmission, Correlation Analysis and Substituent Electronic Effects on Mulliken Charges of Para-Substituted 1-(arylmethylene)-1HCyclopropa[ b]Benzenes, and Para-Substituents 1-(diarylmethylene)-1H-Cyclopropa[b]Naphthalenes

机译:对位取代的1-(芳基亚甲基)-1H环丙烷[b]苯和对位取代基的1-(二芳基亚甲基)-1H-环丙烷[b]萘的Mulliken电荷的传输,相关性分析和取代基电子效应

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摘要

The effects of substituents on the Mulliken charge (O_M) for C-1, C-2, C-3, C-4, and C-5 atoms of para-substituted 1-(arylmethylene)-1H-cyclopropa[b]benzenes (series 1) and para-substituents 1-(diarylmethylene)-1H-cyclopropa[b]naphthalenes (series 2), were done by using mono substituent parameter (Hammett's and σ_(13) models), and dual substituent parameter (Taft's, Reynolds',and Swain's models). The Mulliken charges (Q_M) are calculated by performing density functional theory (B3LYP/3-21G), and Semi-empirical AM1 methods. Single substituent parameter (Hammett's model) gives good correlation when resonance effects, approximately, equal to the polar/inductive effect. The most sensitive centers to substituent effects are the C-1, C-2 and C-3 in the two series.
机译:取代基对对位取代的1-(芳基亚甲基)-1H-环丙烷[b]苯的C-1,C-2,C-3,C-4和C-5原子的Mulliken电荷(O_M)的影响(系列1)和对位取代基1-(二芳基亚甲基)-1H-环丙烷[b]萘(系列2),是使用单取代基参数(Hammett和σ_(13)模型)和双取代基参数(塔夫脱,雷诺和斯温的模型)。通过执行密度泛函理论(B3LYP / 3-21G)和半经验AM1方法计算Mulliken电荷(Q_M)。当共振效应大约等于极性/感应效应时,单个取代基参数(哈米特模型)具有良好的相关性。对取代作用最敏感的中心是两个系列中的C-1,C-2和C-3。

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