We present mass-correlated rotational alignment spectroscopy and the first high-resolution rotational Raman spectra for furan. Spectra were measured with a spectral range up to 0.5 THz and a resolution down to 1.6 MHz. Spectra for ¹³C and ¹⁸O isotopologues were observed in their corresponding mass channels at natural abundance. Based on our data and literature constants, we performed a purely experimental structure analysis for the effective and equilibrium structures of furan. The results highlight the utility of CRASY to obtain rare isotopologue spectra without isotopically enriched samples.

中文翻译：

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质量相关旋转拉曼光谱和呋喃的结构

我们提出了质量相关的旋转对准光谱和第一个呋喃的高分辨率旋转拉曼光谱。测量光谱的光谱范围高达 0.5 THz，分辨率低至 1.6 MHz。在自然丰度下，在相应的质量通道中观察到¹³ C 和¹⁸ O 同位素体的光谱。根据我们的数据和文献常数，我们对呋喃的有效结构和平衡结构进行了纯实验结构分析。结果强调了 CRASY 在无需同位素富集样品的情况下获得稀有同位素谱的实用性。