THE MICROWAVE-SPECTRUM OF C-FLUOROPHOSPHAETHYNE FC=P - STRUCTURE DETERMINATION, DIPOLE-MOMENT, AND VIBRATION-ROTATION DATA

The microwave spectrum of the new linear triatomic molecule C-fluorophosphaethyne FC≡P which is produced when CF3PH 2 vapor passes over solid KOH at room temperature and ca. 20 μmHg pressure has been studied. Transitions belonging to the two isotopic variants 19F12C31P and 19F13C 31P have been analyzed and the resulting structural data are r(F-C) = 1.285 ± 0.005 Å and r(C≡P) = 1.541 ± 0.005 Å. The study has yielded the following spectroscopic parameters for 19F 12C31P: B0 = 5257.80 ± 0.03 MHz, α2 = -11.95 ± 0.05 MHz, q2 = 4.478 ± 0.002 MHz, and μ = 0.279 ± 0.001 Debye. Copyright © 1980 by Academic Press, Inc.