Infrared Spectra of Lithium Halide Monomers
Infrared Spectra of Lithium Halide Monomers
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DOI：
10.1063/1.1731439
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发表时间：
1960-11
影响因子：
4.4
通讯作者：
W. Klemperer;Wilfred G. Norris;A. Büchler;A. Emslie
中科院分区：
文献类型：
--
作者：
W. Klemperer;Wilfred G. Norris;A. Büchler;A. Emslie
对卤化锂的红外光谱进行了重新研究。双原子分子的振动常数为LiClωe=641±3ωexe=4.2±0.3 ωe=563.2±0.2ωexe=3.53±0.15ωeye=0.02±0.03 lil ωe=498.2±0.2ωexe=3.39±0.15ωeye=0.08±0.03。得到了溴化锂和碘化锂的势能邓纳姆展开的前五个系数。里特纳的离子模型已被发现能很好地表示势能。卤化锂的离子模型处理得到了扩展，以考虑到卤化锂离子具有较高的多极极化率。四极和更高极化率的引入破坏了只使用偶极极化率时观测到的光谱常数和计算得到的光谱常数之间的一致性。
The infrared spectra of the lithium halides have been re‐examined. The vibrational constants of the diatomic molecules are LiClωe=641±3ωexe=4.2±0.3LiBrωe=563.2±0.2ωexe=3.53±0.15ωeye=0.02±0.03LiIωe=498.2±0.2ωexe=3.39±0.15ωeye=0.08±0.03. The first five coefficients of the Dunham expansion of the potential energy have been obtained for lithium bromide and iodide. Rittner's ionic model has been found to give a good representation of the potential energy. The ionic‐model treatment of the lithium halides has been extended to take account of the higher multipole polarizabilities of the halide ions. The introduction of quadrupole and higher polarizabilities destroys the agreement between observed and calculated spectroscopic constants which is found when only dipole polarizabilities are used.