大学化学 >> 2023, Vol. 38 >> Issue (8): 318-325.doi: 10.3866/PKU.DXHX202208061

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用LOL-π分析展示B3N3六元环的离域π电子和芳香性——推荐一个普适性的计算化学实验

程学礼(), 赵燕云, 左健, 禚林海, 孙媛媛   

  • 收稿日期:2022-08-09 录用日期:2022-09-26 发布日期:2022-11-04
  • 通讯作者: 程学礼 E-mail:x_cheng@tsu.edu.cn
  • 基金资助:
    2021年泰安市教育科学研究专项课题(TJK202106ZX029);泰山学院2019年度教师教育研究专项和泰山学院2022年度教师教育研究专项课题《基于大概念下核心素养为导向的初中化学整体教学模式——项目式学习实践研究》;泰山学院教改课题(JG202120)

Revealing the Delocalized π-Electrons and Aromaticity of the B3N3 Six-Membered Ring Using LOL-π Analysis

Xueli Cheng(), Yanyun Zhao, Jian Zuo, Linhai Zhuo, Yuanyuan Sun   

  • Received:2022-08-09 Accepted:2022-09-26 Published:2022-11-04
  • Contact: Xueli Cheng E-mail:x_cheng@tsu.edu.cn

摘要:

B3N3独特的六元环结构是研究非苯芳香性的理想模板。本实验在B3LYP-D3(BJ)/def2-TZVP水平上优化了B3N3六元环结构并进行频率验证,用Multiwfn 3.7 (dev)绘制了其LOL-π填色图,完美展示了六元环的离域π电子分布和非苯芳香性特征。实验普适性和可操作性强,安全性高,易于推广。

关键词: B3N3六元环, LOL-π, 离域π键, 芳香性

Abstract:

The unique B3N3 six-membered ring is an ideal template for the investigation of non-benzene aromaticity. The B3N3 isomer with a six-membered ring was fully optimized at the B3LYP-D3(BJ)/def2-TZVP level, and frequency validation was carried out simultaneously to confirm whether the structure was local minimum. Subsequently, the LOL-π color-filled map was drawn by Multiwfn 3.7 (dev) to accurately reveal the delocalized π-electrons and non-benzene aromaticity of the six-membered ring. This innovative experiment has pronounced advantages, such as strong operability and universality, high safety, and good generality.

Key words: B3N3 six-membered ring, LOL-π, Delocalized π bonds, Aromaticity