Abstract
The rotational spectrum of bis(difluoromethyl) ether (CF2HOCF2H) has been observed and analyzed using both a conventional Stark-modulated microwave spectrometer and a pulsed molecular beam Fabry–Perot cavity microwave (FTMW) spectrometer. The lowest energy conformer studied here has a (hydrogen)syn–anticonformation. The high sensitivity of the FTMW spectrometer permits observation and analysis of the13C,18O, and2H isotopomers in natural abundance. The electric dipole moment was measured for the normal species and found to be μa= 5.020(7) × 10−30C · m [1.505(2) D], μb= 0.19(4) × 10−30C · m [0.056(11) D], μc= 0.48(2) × 10−30C · m [0.144(7) D], and μT= 5.047(10) × 10−30C · m [1.513(3) D].
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