Journal of Quantitative Spectroscopy and Radiative Transfer ( IF 2.3 ) Pub Date : 2021-07-30 , DOI: 10.1016/j.jqsrt.2021.107856 O.N. Ulenikov , O.V. Gromova , E.S. Bekhtereva , N.I. Raspopova , A.V. Kuznetsov , C. Leroy , C. Sydow , S. Bauerecker
The infrared spectra of SiD in natural abundance were measured in the region of 350–2050 cm with a Bruker IFS 125HR Fourier transform interferometer at an optical resolution of 0.0021 and 0.0016 cm and analyzed. Not less than 6490 transitions with = 33 were assigned for the first time to the bands , , and of the SiD molecule. Numerous “hot” dyad–pentad transitions (in general, 5545 “hot” transitions) were also assigned for the first time in the region of 600–760 cm. Rotational, centrifugal distortion, tetrahedral splitting, and interaction parameters for the , , , , , and vibrational states were determined from the fit of experimental line positions. The obtained set of 69 fitted parameters reproduces the initial experimental data with an accuracy of cm for the 6490 “cold” transitions and cm for the 5545 “hot” transitions. Results of the analogues analysis for the SiD and SiD isotopologues with 403/136 “cold” and 171/99 “hot” assigned transitions are presented also.
中文翻译:
第一次对氘代硅烷五元组弯曲带的高分辨率研究:28 SiD 4 、29 SiD 4 和 30 SiD 4 的 (0200)、(0101) 和 (0002) 振动态的能量结构
SiD的红外光谱 在 350-2050 cm 区域测量了自然丰度 使用 Bruker IFS 125HR 傅立叶变换干涉仪,光学分辨率为 0.0021 和 0.0016 cm并进行了分析。不少于 6490 次转换 = 33 人第一次被分配到乐队 , , 和 的 硅酸盐分子。在 600-760 cm 范围内还首次分配了许多“热”二元组-五单元组跃迁(通常为 5545 个“热”跃迁). 旋转、离心变形、四面体分裂和相互作用参数, , , , , 和 振动状态由实验线位置的拟合确定。获得的 69 个拟合参数集以精度为 厘米 对于 6490“冷”转换和 厘米对于 5545 “热”转换。类似物分析的结果硅酸盐 和 硅酸盐 还提供了具有 403/136“冷”和 171/99“热”指定跃迁的同位素体。