Absorption spectra of cobalt(II) chloride and nitrate complexes in aqueous calcium nitrate-ammonium nitrate melts: The influence of solvent composition

被引：15
|
作者：
Vranes, Milan [1 ]
Gadzuric, Slobodan B. [1 ]
Zsigrai, Istvan J. [1 ]
Dozic, Sanja [1 ]
机构：
[1] Univ Novi Sad, Dept Chem Biochem & Environm Protect, Fac Sci, Novi Sad 21000, Serbia
来源：
JOURNAL OF MOLECULAR LIQUIDS | 2010年 / 152卷 / 1-3期
关键词：
Molten salt; Cobalt(II) complexes; Calcium nitrate; Ammonium nitrate; HALIDE-COMPLEXES; THERMODYNAMICS; STABILITY; IONS;
D O I：
10.1016/j.molliq.2009.12.002
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：
Influence of solvent composition, in the salt mole fraction and water content on absorption spectra of cobalt(II) chloride and nitrate in xCa(NO3)(2) zH(2)O-(1 - x)NH4NO3 systems was investigated by spectrophotometric method in the wavelength range 400-800 nm at 55 degrees C On the basis of absorption spectra of cobalt(II) chloride and nitrate complexes and overall molar absorption coefficients obtained in 13 investigated systems, the geometry of the complexes formed was studied Comparing of these spectra with those obtained in anhydrous melts and aqueous solutions, possible coordination of water molecules with cobalt(II) and formation of mixed complexes was considered (C) 2009 Elsevier B V All rights reserved
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页码：34 / 38
页数：5
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