氦纳米液滴中甲胺单体、二聚体和三聚体CH3拉伸区的红外光谱

IF 2.7 3区化学 Q2 CHEMISTRY, ANALYTICAL

Vibrational Spectroscopy Pub Date : 2025-01-01 DOI:10.1016/j.vibspec.2024.103761

Hamad Ashraf, Philipp Meyer, Stefan Henkel, Gerhard Schwaab, Martina Havenith

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引用次数: 0

摘要

本文报道了甲胺单体及其超流氦纳米液滴中CH3拉伸区的红外光谱。利用质量选择红外光谱结合波段强度作为甲胺压力的函数，我们能够分配（甲胺）1-3簇的振动。除了基本振动外，还观察到泛音和组合带。例如，在甲胺单体的高分辨率光谱中，观察到15个光谱特征，而文献报道的光谱特征为9个。所有的频带都可以根据最近的非谐波计算来分配。

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IR spectra of the CH3 stretching region of methylamine monomer, dimer and trimer in helium nanodroplets

We report the infrared spectra of the CH₃ stretching region in methylamine monomer and its clusters in superfluid helium nanodroplets. Using mass-selective IR spectroscopy in combination with band intensities as the function of methylamine pressure, we were able to assign the vibrations of the (methylamine)_1–3 clusters. In addition to the fundamental vibrations, overtone and combination bands are observed. As an example, in the high-resolution spectrum of methylamine monomer, 15 spectral features were observed, compared to 9 features reported in the literature. All the bands could be assigned based on recent anharmonic calculations.

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来源期刊

Vibrational Spectroscopy 化学-分析化学

CiteScore

4.70

自引率

4.00%

发文量

103

审稿时长

52 days

期刊介绍： Vibrational Spectroscopy provides a vehicle for the publication of original research that focuses on vibrational spectroscopy. This covers infrared, near-infrared and Raman spectroscopies and publishes papers dealing with developments in applications, theory, techniques and instrumentation. The topics covered by the journal include: Sampling techniques, Vibrational spectroscopy coupled with separation techniques, Instrumentation (Fourier transform, conventional and laser based), Data manipulation, Spectra-structure correlation and group frequencies. The application areas covered include: Analytical chemistry, Bio-organic and bio-inorganic chemistry, Organic chemistry, Inorganic chemistry, Catalysis, Environmental science, Industrial chemistry, Materials science, Physical chemistry, Polymer science, Process control, Specialized problem solving.