高等学校化学学报 ›› 2012, Vol. 33 ›› Issue (06): 1259.doi: 10.3969/j.issn.0251-0790.2012.06.023

• 物理化学 • 上一篇    下一篇

Ge@C82结构及性质的理论研究

洪波, 金东日, 李蕴, 马亚娟, 卢敏, 李霞, 张好好, 孙钰   

  1. 吉林农业大学资源与环境学院, 长春 130118
  • 收稿日期:2012-03-08 出版日期:2012-06-10 发布日期:2012-06-10
  • 通讯作者: 洪 波, 女, 博士, 副教授, 主要从事应用量子化学研究. E-mail:lucybohong@yahoo.cn E-mail:lucybohong@yahoo.cn
  • 基金资助:

    国家自然科学基金(批准号: 20831004)、吉林省科技厅科技发展计划项目(批准号: 20110952)和吉林省教育厅"十一五"科学技术研究项目(批准号: 2008305)资助.

Theoretical Investigation of Structure and Properties of Ge@C82

HONG Bo, JIN Dong-Ri, LI Yun, MA Ya-Juan, LU Min, LI Xia, ZHANG Hao-Hao, SUN Yu   

  1. College of Resource and Environmental Science, Jilin Agricultural University, Changchun 130118, China
  • Received:2012-03-08 Online:2012-06-10 Published:2012-06-10

摘要: 采用密度泛函理论方法, 对Ge@C82的结构及性质进行计算研究. 结果表明, 由于包合Ge, C82碳笼平均键长增长, 碳笼增大, 而且Ge原子略微偏离碳笼中心. 三重态的C2Ge@C82为能量最低结构. 自然布居分析表明, C2C82与Ge之间未发生电子转移, 可以用C2Ge@C82来表示它的结构. C2C82C2Ge@C82的红外光谱计算结果显示, 二者的主要区别为C2Ge@C82在1100~1200 cm-1区间的吸收峰变得更尖锐.

关键词: Ge@C82, 电子结构, 电子性质, 密度泛函理论

Abstract: The structures and properties of Ge@C82 were investigated via the density functional theory(DFT) method. The results show that the carbon cage is enlarged and germanium atom shift slightly from the cage center due to encapsulation. The triplet C2Ge@C82 has the lowest energy. The natural population analysis shows that the electron transfer between C2C82 and Ge is not evident, and its structure can be represented as C2Ge@C82. The IR spectrum analysis of C2C82 and C2Ge@C82 indicates that the absorption peak of C2Ge@C82 becomes acute in the range of 1100-1200 cm-1.

Key words: Ge@C82, Electronic structure, Electronic property, Density functional theory

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