Changes of vibrational modes upon melting solid Cs2NaScCl6, Cs3ScCl6, Cs3Sc2Cl9 and ScCl3

被引：18
|
作者：
Zissi, GD
Papatheodorou, GN
机构：
[1] FORTH, Inst Chem Engn & High Temp Chem Proc, GR-26500 Patras, Greece
[2] Univ Patras, Dept Chem Engn, GR-26500 Patras, Greece
来源：
CHEMICAL PHYSICS LETTERS | 1999年 / 308卷 / 1-2期
关键词：
D O I：
10.1016/S0009-2614(99)00583-7
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Raman spectra of Cs2NaScCl6, Cs3ScCl6, Cs3Sc2Cl9 and ScCl3 compounds have been measured from 25 degrees C to temperatures above their melting points. The vibrational modes of the discrete species ScCl63- and Sc2Cl93- in the solids are transferred upon melting into the liquid and participate in an equilibrium involving ScCl4-. The spectra of solid ScCl3 are dominated by the vibrational modes of a triple layer of ions consisting of edge-sharing ScCl63- octahedra. Two main bands are seen in the melt spectra which infer a molecular liquid but a rather complex melt structure is suggested by the overall physicochemical data. (C) 1999 Elsevier Science B.V. All rights reserved.
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页码：51 / 57
页数：7
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