...
首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Anomeric effect in halogenated methanols: A quantum theory of atoms in molecules study
【24h】

Anomeric effect in halogenated methanols: A quantum theory of atoms in molecules study

机译:卤代甲醇中的端粒效应:分子中原子的量子理论研究

获取原文
获取原文并翻译 | 示例
           

摘要

The quantum theory of atoms in molecules (QTAIM) has been used to analyze the gauche conformational preference of fluoromethanol and chloromethanol. The analysis of the total atomic population and localization and delocalization indices show trends that are not in line with the hyperconjugative explanation. Energy terms arising from the QTAIM partitioning have been obtained for fluoromethanol, revealing that (i) C-O interaction plays the most significant role in stabilizing the gauche rotamer and (ii) the summation of exchange terms (the only ones that could be related to hyperconjugation) has a smaller weight than electrostatic ones in the energy balance among gauche, anti, and syn conformations; however, they are far from being negligible.
机译:分子中的原子量子理论(QTAIM)已用于分析氟甲醇和氯甲醇的gauche构象偏好。对总原子数和局部化与离域化指数的分析显示出与超共轭解释不符的趋势。已经获得了由QTAIM分配产生的能级术语,用于氟甲醇,表明(i)CO相互作用在稳定gauche rotamer中起着最重要的作用,以及(ii)交换项的总和(可能与超共轭相关的唯一项)在薄纱,反和顺式构象之间的能量平衡中,其重量比静电轻。但是,它们远不能忽略。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号