摘要
用量子化学从头算方法研究了C40、Nb@C_(40)^+、La@C_(40)^-的几何构型和电子结构.C40最稳定构型具有D_2对称性.La和Nb原子内含于C40笼中,形成金属夹心碳宪Nb@C_(40)、^+La@C_(40_^+.C40结合能大于M@C+40(M=Nb,La).
The geometric configuration and electronic structure of C40, Nb@C+40 and La@C+40were studied by using quantum chemical ab initio method. The most stable configurat1on ofC40 was found to possess D2 symmetry- Nb and La atoms of Nb@C+40 and La@C+40 were insidethe C'40 cage, forming endohedral metallofullerenes- Binding energy of C40, was larger thanthose of M@C+40(M =Nb, La).
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
1997年第12期2023-2025,共3页
Chemical Journal of Chinese Universities
基金
国家自然科学基金
吉林大学理论化学计算国家重点实验室资助
吉林大学超分子结构及谱学开放实验室资助
关键词
C40
电子结构
碳40
钕碳40
镧碳40
金属碳笼
C_(40), Nb@C_(40)^+, La@C_(40)^+, Geometric configuration, Electronic structure