期刊名称:Proceedings of the National Academy of Sciences
印刷版ISSN:0027-8424
电子版ISSN:1091-6490
出版年度:1982
卷号:79
期号:4
页码:1341-1345
DOI:10.1073/pnas.79.4.1341
语种:English
出版社:The National Academy of Sciences of the United States of America
摘要:The method of partial retention of diatomic differential overlap (PRDDO) has been extended to the elements through the first transition series. A minimum basis set of Slatertype orbitals is employed, with optional 3d functions on atoms in the second major row. The 3d shell for transition metal atoms is a fixed-contracted double-{zeta} combination of Slater orbitals. The method retains the basic n3 dependency inherent in PRDDO. Limited one-center parameterization and empirical two-center exchange integrals are included. The overall accuracy of the approach is comparable to that of the PRDDO method as previously applied to molecules containing first-row atoms only.
关键词:molecular orbital theory ; molecular wavefunctions