高等学校化学学报 ›› 1999, Vol. 20 ›› Issue (2): 260.

• 论文 • 上一篇    下一篇

异质富勒烯C58BN的结构与光谱研究

陈中方1, 陈兰1, 马克勤1, 栗方星1, 潘荫明1, 赵学庄1, 唐敖庆2, 封继康2   

  1. 1. 南开大学化学系, 天津 300071;
    2. 吉林大学理论化学研究所, 长春 130023
  • 收稿日期:1997-12-24 出版日期:1999-02-24 发布日期:1999-02-24
  • 通讯作者: 赵学庄
  • 作者简介:陈中方,男,27岁,博士研究生.
  • 基金资助:

    国家自然科学基金(批准号:29773022)

Theoretical Studies on the Structures and Electronic Spectrafor Substituted Fullerene C58BN

CHEN Zhong-Fang1, CHEN Lan1, MA Ke-Qin1, LI Fang-Xing1, PAN Yin-Ming1, ZHAO Xue-Zhuang1, TANG Ao-Qing2, FENG Ji-Kang2   

  1. 1. Department of Chemistry, Nankai University, Tianjin, 300071;
    2. Institute of Theoretical Chem., Department of Chemistry, Jilin Univer sity, Changchun, 130023
  • Received:1997-12-24 Online:1999-02-24 Published:1999-02-24

摘要: 用AM1、MNDO和INDO半经验方法研究了异质富勒烯C58BN各异构体的结构、稳定性和电子光谱.所有这些半经验方法给出了相似的稳定性顺序.结果表明,在6-6位置取代的异构体是最稳定的,异构体的稳定性随杂原子间距离的增加而降低;与C60相比,硼氮杂富勒烯C58BN具有较低的前线轨道能级差、较小的电离势和较低的稳定化能.C58BN很可能具有与C60分子相似的反应活性,易发生亲核反应,但比C60更易失去电子形成正离子.以AM1优化构型为基础,利用INDO/CIS方法计算了各异构体的电子光谱.

关键词: C58BN, AM1, MNDO, INDO, UV光谱

Abstract: The equilibrium structures, relative stabilities of some isomers of substituted fullerene C58BN have been studied at the AM1, MNDO and INDO level. The results obtained by these semiempirical methods show that the substituted fullerene is less stable than C60. All the empirical methods in this work indicate that the 6-6 isomer is the most stable species for C58BN, and the stabilities decrease with the increasing of the distance between the heteroatoms. The small differences of ionization potentials between C58Band C60 indicate that C58BN may have similar chemical activity to react with nucleophiles, and the smaller ionization potentials indicate that C58BN may lose their electrons more readily. The eletronic spectra for some isomers of C58BN have been calculated by using INDO/CIS method.

Key words: C58BN, AM1, MNDO, INDO, UV spectra

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