Journal of Chemical Physics, Vol.106, No.2, 485-488, 1997
Spectroscopic Characterization of the Asf2 Radical
The electronic spectrum of the AsF2 radical was observed between 330 and 380 nm using one-color, mass-resolved, 2+1 resonance enhanced multiphoton ionization (REMPI) spectroscopy. The spectrum arises from two-photon resonances with the (F) over tilde (T-0=54 355 +/- 15 cm(-1), nu(1)’ = 813 +/- 6 cm(-1), and nu(2)’ = 308 +/- 5 cm(-1)) and (H) over tilde(T-0=57 480 +/- 15 cm(-1), nu(1)’ = 810 +/- 10 cm(-1), and nu(2)’ = 310 +/- 20 cm(-1)), Rydberg states. A third photon ionized the radicals. The REMPI spectrum exhibits vibrational hot bands that give spectroscopic constants for 4sF(2) ((X) over tilde B-2(1)) of nu(1) "=705 +/- 10 cm(-1) and nu(2) " = 285 +/- 10 cm(-1). Solutions of the Rydberg equation indicate that plausible assignments for the (F) over tilde and (H) over tilde states are limited to the set of 4d and 5p Rydberg states.