59- Abstract2 2013 PF3 Molecule

Reinvestigation of The 2ν₄(A, E) Infrared 

Band of Phosphorus Trifluoride

J.  Mater.Environ. Sci. 4 (5) (2013) 721-725


Par Hamid Najib

Laboratoire de Physique de la Matière Condensée, Équipe de Spectrométrie Physique, Département de Physique, Université Ibn Tofaïl, Faculté des Sciences, B.P. 133, Kénitra 14000, Morocco

The 2v4(A, E) excited states of the oblate molecule PF3, lying near 693 cm-1, were reinvestigated by high-resolution FTIR spectroscopy. Assumed to be isolated, these levels were treated by applying different reduction forms of the effective rovibrational Hamiltonian recently developed for the vt(E) = 2 vibrational state of a C3v symmetric top molecule, with models taking into account ℓ- and k-type intravibrational resonances. Parameters up to sixth order have been accurately determined. The unitary equivalence of the derived parameter sets in different reductions was successfully verified.

Keywords

Phosphorus trifluoride PF3 FTIR spectroscopy, Rovibration, Overtone band, Reductions