An accurate ab initio calculation of the electron affinity of NO

被引:27
|
作者
McCarthy, MC [1 ]
Allington, JWR [1 ]
Griffith, KS [1 ]
机构
[1] Creighton Univ, Dept Chem, Omaha, NE 68178 USA
关键词
D O I
10.1016/S0009-2614(98)00408-4
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
Potential energy curves for NO and NO- were calculated at the QCISD, QCISD(T), CCSD and CCSD(T) levels using aug-cc-pVDZ and aug-cc-pVTZ basis sets. The curves were fit with a modified Morse potential and rovibrational eigenvalues were extracted using TRIATOM software. The electron affinity of NO and the spectroscopic constants of both species were then determined. Better than 97% accuracy for the electron affinity was obtained for the QCISD, QCISD(T) and CCSD(T) techniques combined with the aug-cc-pVTZ basis set. It was determined that NO- is stable by virtue of zero-point energy only. (C) 1998 Published by Elsevier Science B.V. All rights reserved.
引用
收藏
页码:156 / 159
页数:4
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