高等学校化学学报 ›› 2005, Vol. 26 ›› Issue (5): 894.

• 研究论文 • 上一篇    下一篇

SiNP分子结构及稳定性的理论研究

于健康1, 陈广慧1,2, 黄旭日1, 李卓1, 孙家锺1   

  1. 1. 吉林大学理论化学研究所, 理论化学计算国家重点实验室, 长春130023;
    2. 牡丹江师范学院化学系, 牡丹江157012
  • 收稿日期:2004-10-25 出版日期:2005-05-10 发布日期:2005-05-10
  • 通讯作者: 黄旭日(1962年出生),男,博士,教授,博士生导师,从事理论化学多体理论研究.E-mail:llhx@mail.jlu.edu.cn E-mail:llhx@mail.jlu.edu.cn
  • 基金资助:

    国家自然科学基金(批准号:20333050,20303007);教育部骨干教师基金;吉林省杰出青年基金;黑龙江省普通高等学校骨干教师创新基金;黑龙江省自然科学基金(批准号:B2004-09);黑龙江省普通高等学校骨干教师创新能力资助计划(批准号:1054G059)资助.

Theoretical Studies on Molecular Structures and Stability of SiNP

YU Jian-Kang1, CHEN Guang-Hui1,2, HUANG Xu-Ri1, LI Zhuo1, SUN Chia-Chung1   

  1. 1. State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun 130023, China;
    2. Department of Chemistry, Mudanjiang Normal College, Mudanjiang 157012, China
  • Received:2004-10-25 Online:2005-05-10 Published:2005-05-10

摘要: 采用B3LYP/6-311G(d),QCISD和CCSD(T)方法,对单重态和三重态SiNP体系的异构化进行了研究.在QCISD/6-311G(d)水平下,得到了7个稳定的异构体,它们由4个过渡态所连接,其中三重态线型异构体SiNP(31,3Σ1),单重态环状异构体SiNP(14,1A')和单重态线型异构体SiNP(11,1Σ)都具有较大的热力学及动力学稳定性.

关键词: B3LYP, SiNP, 异构体, 势能面, 结构

Abstract: The singlet and triplet potentical energy surfaces (PES) of SiNP are investigated at the B3LYP, QCISD and CCSD(T) levels. It is shown that there are seven stable isomers and four transition states located. The global minima is a linear triplet isomer SiNP-31, followed by a singlet cyclic isomer cSiNP-14 and a linear isomer SiNP-11, and all the above three isomers have good thermodynamic and kinetic stabilities.

Key words: B3LYP, SiNP, Isomer, Potential energy surface(PES), Structure

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