高等学校化学学报 ›› 2002, Vol. 23 ›› Issue (4): 718.

• 研究简报 • 上一篇    下一篇

NHn(n=1~3)体系电子对内对间相关能的变化规律

禚淑苹1, 韦吉崇1, 居冠之1,2   

  1. 1. 南京大学化学系, 配位化学国家重点实验室, 亚微观固态化学研究所, 南京 210093;
    2. 山东大学晶体材料国家重点实验室, 济南 250100
  • 收稿日期:2001-01-18 出版日期:2002-04-24 发布日期:2002-04-24
  • 通讯作者: 居冠之(1937年出生),男,教授,博士生导师,从事量子化学和分子反应动力学研究.E-mail:gzju@nju.edu.cn E-mail:gzju@nju.edu.cn
  • 基金资助:

    国家自然科学基金(批准号:29873023)资助.

Changing Rules of the Intrapair and Interpair ElectronCorrelation Energy on NHn (n=1-3)

ZHUO Shu-Ping1, WEI Ji-Chong1, JU Guan-Zhi1,2   

  1. 1. State Key Laboratory of Coordination Chemistry, Institute of Mesoscopic Solid State Chemistry, Department of Chemistry, Nanjing University, Nanjing 210093, China;
    2. State Key Laboratory of Crystal Material, Shandong University, Jinan 250100, China
  • Received:2001-01-18 Online:2002-04-24 Published:2002-04-24

关键词: 电子对内对间电子相关, N-H键电子对, 高激发项贡献, 电子对间相关能百分数

Abstract: The intrapair and interpair electron correlation energies of NH, NH2, NH3 molecules are calculated at MP2/6-311 ++G(d) level by using MP2-OPT1 method of MELD PROGRAM.The results indi-cate that the intrapair electron correlation energy of 1s2 electrons of Natom is transferable in these NH-con-taining molecules.From Nto NH3 systems, the total correlation energy changes by a value in a range withthe increase of each N-H bond.This shows that the electron pair energy of N-H bonding pair has some-what transferability in these systems.The comparison of NH-containing systems with their isoelectronicatoms shows that the contribution of higher-excitation terms to the total correlation energy are larger thanthose of the corresponding isoelectronic atom systems.

Key words: Intrapair and interpair electron correlation, N-H bonding electron pair, High-excitation con-tribution, Percent age of interpair correlation energy

中图分类号: 

TrendMD: