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Rotational Spectrum, Structure, and Electric Dipole Moment of Bis(difluoromethyl) Ether

✍ Scribed by R.D. Suenram; F.J. Lovas; A.R. Hight Walker; D.A. Dixon

Publisher: Elsevier Science
Year: 1998
Tongue: English
Weight: 232 KB
Volume: 192
Category: Article
ISSN: 0022-2852
DOI: 10.1006/jmsp.1998.7713

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✦ Synopsis

The rotational spectrum of bis(difluoromethyl) ether (CF 2 HOCF 2 H) 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-anti conformation. The high sensitivity of the FTMW spectrometer permits observation and analysis of the 13 C, 18 O, and 2 H isotopomers in natural abundance. The electric dipole moment was measured for the normal species and found to be a ϭ 5.020( 7) ϫ 10 Ϫ30 C ⅐ m [1.505(2) D], b ϭ 0.19(4) ϫ 10 Ϫ30 C ⅐ m [0.056(11) D], c ϭ 0.48(2) ϫ 10 Ϫ30 C ⅐ m [0.144(7) D], and T ϭ 5.047(10) ϫ 10 Ϫ30 C ⅐ m [1.513(3) D].

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