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Aromaticity of benzene derivatives: an exploration of the Cambridge Structural Database

机译:苯衍生物的芳香性:剑桥结构数据库的探索

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The harmonic oscillator model of aromaticity (HOMA) index, one of the most popular aromaticity indices for solid-state benzene rings in the Cambridge Structural Database (CSD), has been analyzed. The histograms of HOMA for benzene, for benzene derivatives with one formyl, nitro, amino or hydroxy group as well as the histograms for the derivatives with two formyl, nitro, amino or hydroxy groups in ortho, meta and para positions were investigated. The majority of the substituted benzene derivatives in the CSD are characterized by a high value of HOMA, indicating fully aromatic character; however, the distribution of the HOMA value from 1 to about 0 indicates decreasing aromaticity down to non-aromatic character. Among the benzene derivatives investigated, a significant decrease in aromaticity can be related to compounds with diamino and dinitro groups in the meta position.
机译:已经分析了剑道结构(HOMA)指数的谐振振荡器模型,已经分析了剑桥结构数据库(CSD)中固态苯环的最流行芳香索引之一。 研究了苯的HOMA的直方图,对于具有一种甲酰基,硝基,氨基或羟基的苯衍生物以及邻邻,硝基,氨基或羟基的衍生物的衍生物的直方图进行了研究。 CSD中的大部分取代的苯衍生物的特征在于HOMA的高价值,表明完全芳香性质; 然而,从1到约0的HOMA值的分布表明将芳香性降低到非芳族特征。 在研究的苯衍生物中,芳香性的显着降低可以与在元位置中的二氨基和Dialitro基团的化合物有关。

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