ISSN:
1089-7690
Source:
AIP Digital Archive
Topics:
Physics
,
Chemistry and Pharmacology
Notes:
The infrared absorption spectrum of the PF radical in the X 3Σ− ground electronic state has been observed using a Zeeman modulated diode laser spectrometer. The radical was produced in a multiple-reflection absorption cell by a dc glow discharge in a mixture of PH3 and CF4. The F1 and F3 spin components of five vibration–rotation transitions of the v=1–0 band have been recorded in the region of 823 to 830 cm−1. By constraining molecular constants of the v=0 state to the values previously determined by microwave spectroscopy, the band origin, the vibration–rotation constant αB=B0−B1, and the vibrational change of the spin–spin interaction constant αλ=λ1−λ0 have been determined from the observed spectrum to be 837.816 36(70), 0.004 639 4(70), and −0.005 04(91) in cm−1, respectively, with one standard deviation in parentheses. The sign of αλ is the same as those of NCl and PCl, but is opposite to those of O2, SO, S2, and SeO.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.451938
