Bounds of Complex Formation for Alkali-Earth Cation in Molten Alkali Chlorides
作者:
Kazuo Sakai,
Tetsurō Nakamura,
Norimasa Umesaki,
Nobuya Iwamoto,
期刊:
Physics and Chemistry of Liquids
(Taylor Available online 1984)
卷期:
Volume 14,
issue 1
页码: 67-78
ISSN:0031-9104
年代: 1984
DOI:10.1080/00319108408080797
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
The tendency of alkali-earth cationM2+(M= Be, Mg, Ca, Sr, Ba) to form a complex ion in molten alkali chlorides ACl (A= Li, Na, K, Rb, Cs) has been interpreted in terms of attractive Coulomb interactions between the cation and anion; ΔΦ = Φ(MCl)– Φ(ACl). The experimental results by means of the Laser Raman spectroscopy indicated the presence of some complex ion in the molten ACl-MCl2systems only when ΔΦ ⪅ 0.38. Coexistence of an octahedral and a tetrahedral complex ions, [CaCl6]4-and [CaCl4]2-, has been suggested via deconvolution of Raman band in the molten 2KCl · CaCl2composition.
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