Comparison of SCF-Xα-SW and CNDO/BW calculations on S4N4H4and F4S4N4
作者:
AnikoE. Foti,
VedeneH. Smith,
S. Kishner,
M.S. Gopinathan,
M.A. Whitehead,
期刊:
Molecular Physics
(Taylor Available online 1978)
卷期:
Volume 35,
issue 1
页码: 111-127
ISSN:0026-8976
年代: 1978
DOI:10.1080/00268977800100081
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Theoretical calculations on the molecules S4N4H4and F4S4N4were made using the SCF-Xα-SW and CNDO/BW methods. In the SCF-Xα-SW method the parameterization with overlapping spheres gave better orbital energies than the parameterization with touching spheres. The eigenvalues and point charges calculated with the SCF-Xα-SW overlap parameterization were in excellent agreement with those calculated with the CNDO/BW method. In the SCF-Xα-SW method, d-orbitals were found to have an insignificant effect on the eigenvalues and point charges. The (CNDO-BW) Localized Molecular Orbitals, LMO's, are highly localized, and give bent SN bonds with a bond order of 1. The two different bond SN distances in F4S4N4are due to hybridization changes at the suphur and nitrogen atoms.
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