Cost effective calculation of molecular charge distributions and gas phase deprotonation energies using density functional methods

被引:11
作者
VanLier, G [1 ]
DeProft, F [1 ]
Geerlings, P [1 ]
机构
[1] FREE UNIV BRUSSELS, FAC WETENSCHAPPEN, EENHEID ALGEMENE CHEM, B-1050 BRUSSELS, BELGIUM
关键词
D O I
10.1016/S0009-2614(97)00640-4
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Major advances have been made in density functional theory and linear scaling methods. However, routine application of these methods to larger systems possessing no symmetry; still remains difficult. Moreover, no clear standard exists for the use of small basis sets in the calculation of atomic or molecular properties with density. functional methods. In this work an evaluation is made of the performance of different density functional methods for small and often used basis sets. Deprotonation energies are calculated for a series of small compounds and compared with high-level quantum chemical calulations. Furthermore, atomic populations calculated with these methods are compared with high-level results. The results show that the use of density functional calculations with smaller basis sets is justified for calculations on larger systems, retaining relatively good accuracies. (C) 1997 Published by Elsevier Science B.V.
引用
收藏
页码:396 / 404
页数:9
相关论文
共 37 条