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-anti conformation. The high sensitivity of the FTMW spectrometer permits observation and analysis of the 13C, 18O, and 2H isotopomers in natural abundance. The electric dipole moment was measured for the normal species and found to be µa = 5.020(7) x 10(-30) C. m [1.505(2) D], µb = 0.19(4) x 10(-30) C. m [0.056(11) D], µc = 0.48(2) x 10(-30) C. m [0.144(7) D], and µT = 5.047(10) x 10(-30) C. m [1.513(3) D].

中文翻译：

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双（二氟甲基）醚的旋转光谱、结构和电偶极矩

双（二氟甲基）醚（CF2HOCF2H）的旋转光谱已经使用传统的斯塔克调制微波光谱仪和脉冲分子束法布里-珀罗腔微波（FTMW）光谱仪进行了观察和分析。此处研究的最低能量构象异构体具有（氢）顺反构象。FTMW 光谱仪的高灵敏度允许观察和分析天然丰度的 13C、18O 和 2H 同位素异构体。测量正常物种的电偶极矩，发现为 µa = 5.020(7) x 10(-30) C. m [1.505(2) D]，µb = 0.19(4) x 10(-30) C . m [0.056(11) D], µc = 0.48(2) x 10(-30) C. m [0.144(7) D], µT = 5.047(10) x 10(-30) C. m [ 1.513(3) D]。