气相中 YI3 的红外光谱

IF 2.7 3区化学 Q2 CHEMISTRY, ANALYTICAL

Vibrational Spectroscopy Pub Date : 2024-07-23 DOI:10.1016/j.vibspec.2024.103725

R.J.M. Konings , A.S. Booij

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引用次数: 0

摘要

通过红外光谱法测量了 YI3 以上气相的振动光谱。光谱显示了四个强带，其中三个可归属于 YI3 单体分子的基本红外活跃振动。观察到的频率与文献报道的量子化学计算结果非常吻合。根据文献，二聚体分子在蒸汽中的比例相当大，我们在讨论实验光谱中第四个强波段的归属时也讨论了二聚体分子的存在。虽然其位置与二聚物的强基带非常吻合，但其强度表明二聚物的比例远远超出了其他稀土三碘化物的范围。

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The infrared spectrum of YI3 in the vapour phase

The vibrational spectrum of the vapour phase above YI₃ was measured by infrared spectroscopy. The spectrum revealed four strong bands, three of which could be assigned to the fundamantal infrared active vibrations of the YI₃ monomer molecule. The observed frequencies agree very well with quantum-chemical calculations reported in literature. The presence of dimer molecules, the fraction of which is significant in the vapour according to literature, is also discussed in the context of assigning the fourth strong band in the experimental spectrum. Although its position matches well with a strong fundamental of the dimer, its intensity suggest a dimer fraction that is far outside the range for the other rare-earth triiodides.

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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.