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作 者:寇建仁[1] 张生万[1] 赵丹萍[1] 胡永钢[1] 李美萍[1] 乔华[1]
出 处:《山西大学学报(自然科学版)》2006年第4期410-413,共4页Journal of Shanxi University(Natural Science Edition)
基 金:山西省自然科学基金(20041013)
摘 要:通过对43种烷基苯类化合物在不同柱温下的129个样本集的气相色谱保留指数值(R I)与其部分参数关系的研究,发现R I与拓扑指数(mQ)、摩尔折射度(M R)结构参数及柱温(T)之间的关系可表示为:RI=-35.689-149.4350Q-5.0471Q+116.541MR+2.538T-1.4600Q1Q+0.2941QMR(R=0.980 0)此式不仅在一定程度上阐明了烷基苯类化合物RI与其分子结构及柱温间的关系,同时也提供了一种计算烷基苯类化合物于不同温度下RI的新方法.继以留一法(Leave-one-out,LOO)进行交互检验,相关系数RCV=0.978 3,说明所建模型具有良好的稳定性和预测能力,较好地揭示了烷基苯类化合物在不同温度下气相色谱保留指数的变化规律.The relationships among topological index (^mQ),mole spec ture (T) and the gas chromatographic retention indices (RI) of alk5 tures were studied. It was found that there were hign correlation am ific refraction (MR),column tempera- 1 benzenes on three different temperaong mQ,MR,T and RI,the regression equation can be expressed as follows: RI=-35.689-149.435^0Q-5.047^1Q+116.541MR+2.53871-1.460^0Q^1Q+0.294^1QMR(R=0.9800) The model was tested by cross-validation and satisfactory results were obtained (Rcv=0. 978 3). This model can elucidate the change rule of the gas chromatographic retention indices for alkyl benzenes very well. It was suggested that the quantitative structure retention relationship (QSRR) models had better stability and predictability.
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