The microwave spectrum and structure of trifluoro-ethylene

Abstract The microwave spectrum of trifluoroethylene F 2 C=CHF is reported, and a number of ground state and vibrationally excited state lines are assigned. The ground state rotational constants are: 10665.31, 3872.36, 2837.97 MHz. The dipole components are μ a = 0.075 D, μ b = 1.30 D, and μ total = 1.30 D. Calculations of the inertia defect of the ground and excited states indicate that the equilibrium configuration is planar.