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Vibrational spectra and Raman intensity of Cd(CN)2·CCl4 clathrate

✍ Scribed by Isao Kanesaka; Tomomi Tamura; Youta Akizawa


Publisher
John Wiley and Sons
Year
1999
Tongue
English
Weight
112 KB
Volume
30
Category
Article
ISSN
0377-0486

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✦ Synopsis


The infrared and Raman spectra of clathrate are reported. A normal coordinate analysis and a Cd(CN) 2 AE CCl 4 Raman intensity analysis on the basis of the modiÐed many-body model were carried out to clarify the assignments of the observed bands and to examine the intensity changes of the four vibrational modes of on going from CCl 4 gaseous to the clathrate. It was found that the Raman intensity of of is relatively enhanced in the CCl 4 m 1 CCl 4 clathrate compared with the gaseous state. This is explained in terms of the many-body model. The phase transition was found at 220 K, which is ascribed to ordering of molecules, although it is not clear whether the phase CCl 4 transition is of Ðrst or second order.


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