Electronic Spectra of Isoelectronic Amides, Acids, and Acyl Fluorides

作者：Harold I. Basch, M. B. Robin, N. A. Kuebler · 发表于：The Journal of Chemical Physics · 年份：1968 · DOI：10.1063/1.1669992 · 被引用次数：191 · 研究领域：Advanced Chemical Physics Studies、Molecular Spectroscopy and Structure、Molecular spectroscopy and chirality

The first four bands in the gas-phase spectra of amides, carboxylic acids, and acyl fluorides are thought to be n → π*, n → 3s Rydberg, π → π*, and n → 3p Rydberg excitations. That the second and fourth bands are Rydberg, whereas the first and third are valence shell is demonstrated in a comparison of gas-phase and condensed-phase absorption and circular dichroism spectra. All-electron, SCF Gaussian orbital calculations are also presented which qualitatively explain the trends in the spectra of HCOX molecules, and predict several quantities of interest, such as upper-state dipole moments and magnetic transition moments, which have not been measured as yet.