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：1981
卷号：78
期号：2
页码：686-688
DOI：10.1073/pnas.78.2.686
语种：English
出版社：The National Academy of Sciences of the United States of America
摘要：The observed decrease in local mode anharmonicity with increasing methyl substitution in butane is related to a change in potential energy along a methyl CH-stretching coordinate. The potential energy change is modeled by Lennard-Jones 6-12 and Morse potentials and the resultant potential parameters are discussed.
