化学学报 ›› 1992, Vol. 50 ›› Issue (4): 335-341. 上一篇    下一篇

研究论文

硝酸酯类分子力学参数的确定和应用

王大喜;李树森;肖鹤鸣   

  1. 华东工学院化学系;中国科学院上海有机化学研究所
  • 发布日期:1992-04-15

Molecular mechanical parameters of organic nitrates and their application

WANG DAXI;LI SHUSEN;XIAO HEMING   

  • Published:1992-04-15

运用MM2(85年版)分子力学程序, 以硝酸甲酯、硝酸乙酯的实验结构为参比, 调试确定了硝酸酯类化合物的伸缩力常数(K~s)、弯曲力常数(K~b)和旋转力常数(V~1、V~2、和V~3)。用这套力场参数计算了硝酸甲酯、硝酸乙酯和硝化甘油的平衡几何构型、生成热和偶极矩, 计算结果与实验值和从头计算结果相一致。还用这套参数计算了结构未见报道的异基硝酸酯、丙烯基硝酸酯和苯基硝酸酯, 所得结果与MNDO全优化几何构型相符。

关键词: 生成热, 偶极矩, 硝化甘油, 分子力学, 硝酸甲酯, 硝酸乙酯, 硝酸酯类, 异丙基硝酸酯, 丙烯基硝酸酯, 苯基硝酸酯

Force-field parameters of nitrates, including stretching, bending, and torsional parameters are proposed on the basis of mol. mechanics calcns. (MM2) and experimental geometries of Me and Et nitrate. The parameters are used to calculate the geometry, heat of formation, and dipole moment of Me and Et nitrates and nitroglycerin. The results agree well with available experimental and ab initio computational results. The application of the force-field parameters to predict structures of iso-Pr, allyl, and benzyl nitrate is successfully carried out. The calculated mol. geometries also agree with those from MNDO calcns.

Key words: FORMATION HEAT, DIPOLE MOMENTS, NITROGLYCERINE, MOLECULAR MECHANICS, METHYL NITRATE, ETHYL NITRATE

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