POLARIZED INFRARED AND RAMAN-SPECTRA OF MG(OH)2 AND CA(OH)2
POLARIZED INFRARED AND RAMAN-SPECTRA OF MG(OH)2 AND CA(OH)2
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DOI：
10.1016/s0022-3697(73)80212-4
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发表时间：
1973-01-01
影响因子：
4
通讯作者：
WILKINSON, GR
中科院分区：
文献类型：
--
作者：
DAWSON, P;HADFIELD, CD;WILKINSON, GR
本文给出了氢氧化钙和氢氧化镁单晶的全偏振红外和拉曼光谱。结果在很大程度上是不同意与以前的工人无论是关于频率和对称性分配。通过研究晶体的氘代对应物的光谱，确认了这些归属。的色散曲线的先前计算的结果的影响被强调。结果表明，有很少的混合的旋转和压缩字符之间的外部模式的振动和讨论的起源Davydov分裂的内部模式。讨论了红外吸收谱中观察到的复杂组合带，并与中子衍射谱进行了比较。
The complete polarized infra-red and Raman spectra of single crystals of calcium and magnesium hydroxide are presented. The results are largely in disagreement with those of previous workers both with regard to frequencies and to symmetry assignments. The assignments have been confirmed by study of the spectra of the deuterated counterparts of the crystals. The implications of the results for previous calculations of the dispersion curves are stressed. It is shown that there is little mixing of rotatory and translatory character among the external modes of vibration and a discussion of the origin of the Davydov splitting of the internal modes is given. The complex combination bands observed in the infra-red absorption spectrum are discussed and compared with neutron diffraction spectra.