Study of Millimeter-Wave Rotational Spectra of Phosphorus Trifluoride in Ground,v2= 1 and v4= 1 States

Abstract

The millimeter-wave rotational spectra of the ground and excited vibrational states v2=1 and v4=1 of the symmetric top molecule, PF3, have been analyzed again. The B0= 7819.9907(13) MHz, DJ= 7.84984(41) kHz, DJk= -11.7644 (11) kHz, HJ= 15.678 (36) mHz, HJk= -66.46 (12) mHz and HkJ= 87.42 (15) mHz have been determined for ground state. The 1=±1 series have been assigned and the rotational parameters including B4=7823.09212(41) MHz, (q+t)4= -29.49200(65) MHz, rt=2.9465 (13) MHz and (Cζ)4= -3010.94684(41) MHz for v4=1 state were determined accurately