N2O 红外谱图分析 急待求解！？http://www.sciencedirect.com/sci ... 78&searchtype=a找了一篇文献估计能够回答楼主的疑问，里边有这样一句话：Compared to the spectrum of the clean surface (Fig. la), the introduction of the N2O gas produced a pair of new absorption bands at 2237 cm-1 (strong) and 1255 cm-1 (weak). These are readily identified as arising from the antisymmetric (as) and symmetric (s) bond-stretching modes of intact N2O molecules. Inthe gas phase the corresponding absorptions occur at 2224 and 1285 cm-1, respectively [21, 22].这里边请楼主注意，2237对应的是N2O的反对称伸缩模式在表面吸附时的波数，而2224只是对应气态下的波数。因此，很明显，抽过真空后，你只能检测到2237的峰（表面吸附态），而不能检测到气态的N2O对应在2224波数。以上意见希望对你有用，查看更多
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