CF3、CHF2、CH2F的远红外激光磁共振检测

J. Nolte, H. Gg. Wagner, F. Temps, T.J. Sears
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引用次数: 2

摘要

研究了F原子与一系列不同的烃类和部分氟化烃类分子反应时,CF3、CHF2和CH2F自由基在300-800 μm波长范围内的远红外激光磁共振(ir - lmr)光谱。为了识别所观察到的共振模式的载体,并排除或识别由其他顺磁物种的额外共振对光谱的污染,开发并进行了许多化学测试。有了优化的来源和化学测试,许多光谱可以明确地分别归属于CF3、CHF2和CH2F。本研究报道了CHF2自由基在基电子态的首次气相检测。
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Far Infrared Laser Magnetic Resonance Detection of CF3, CHF2, and CH2F

Far infrared laser magnetic resonance (FIR-LMR) spectra of CF3, CHF2, and CH2F radicals were observed in the 300–800 μm wavelength region in the reactions of F atoms with a series of different hydrocarbon and partially fluorinated hydrocarbon molecules. To identify the carriers of the observed resonance patterns and to exclude or identify contamination of the spectra by additional resonances from other paramagnetic species, numerous chemical tests were developed and performed. With optimized sources and the chemical tests in hand, many spectra could be unambiguously attributed to CF3, CHF2, and CH2F, respectively. The present study reports the first gas phase detection of CHF2 radicals in their ground electronic state.

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