摘要
由于分子的非线性光学性质与分子外层电子行为及激发性质密切相关 ,扩散函数对分子的非线性光学极化率计算非常重要 .在ADF程序中的DZP基组基础上缀加扩散函数 ,构造出我们称之为DZP +df的新基组 .通过对 5个模型分子的含频二阶非线性光学极化率的密度泛函理论计算 ,表明新基组可以得出较DZP基组更为准确可靠的结果 ,同时比较ADF程序内置带有扩散函数的大基组 ,计算量大为减少 .
Diffuse functions were added based on DZP set in ADF, which was called DZP+df set. The first hyperpolarizability calculations of five selected molecules show that the calculated results by using DZP+df set are much better than those by DZP set. Diffuse functions in the basis set were found to be important to calculate molecular hyperpolarizability.
出处
《化学学报》
SCIE
CAS
CSCD
北大核心
2004年第6期578-582,共5页
Acta Chimica Sinica
基金
国家自然科学基金 (Nos.699780 2 1
2 0 1 730 64
90 2 0 30 1 7)
福建省自然科学基金 (No .E9930 1 0 0 )资助项目