On the study of resonance interactions and splittings in the PH3 molecule: V1, v3, v2 + v4, and 2v4 bands

O. N. Ulenikov, E. S. Bekhtereva, V. A. Kozinskaia, Jing Jing Zheng, Sheng Gui He, Shui Ming Hu, Qing Shi Zhu, C. Leroy, L. Pluchart

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The high-resolution (0.005 cm-1) Fourier transform infrared spectrum of PH3 is recorded and analyzed in the region of the fundamental stretching bands, v1 and v3. The v2 + v4 and 2v4 bands are taken into account also. Experimental transitions are assigned to the v1, v3, v2 + v4, and 2v4 bands with the maximum value of quantum number J equal to 15, 15, 13, and 15, respectively. a1-a2 splittings are observed and described up to the value of quantum number K equal to 10. The analysis of a1/a2 splittings is fulfilled with a Hamiltonian model which takes into account numerous resonance interactions among all the upper vibrational states.

Original languageEnglish (US)
Pages (from-to)295-308
Number of pages14
JournalJournal of molecular spectroscopy
Issue number2
StatePublished - 2002


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