The heats of fusion of tetrabutylammonium fluoride ionic clathrate hydrates

被引：0
|
作者：
T. V. Rodionova
A. Yu. Manakov
Yu. G. Stenin
G. V. Villevald
T. D. Karpova
机构：
[1] Nikolaev Institute of Inorganic Chemistry,Clathrate Compounds Laboratory and Thermodynamics of Inorganic Materials Laboratory
[2] Siberian Branch of RAS,Thermodynamics of Inorganic Materials Laboratory
[3] Nikolaev Institute of Inorganic Chemistry,undefined
[4] Siberian Branch of RAS,undefined
来源：
Journal of Inclusion Phenomena and Macrocyclic Chemistry | 2008年 / 61卷
关键词：
Ionic clathrate hydrates of tetraalkylammonium salts; Tetrabutylammonium fluoride; Heat of fusion; Phase diagram; Structure;
D O I：
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摘要：
Two ionic clathrate hydrates with different structures are formed in the binary system tetrabutylammonium fluoride–water, namely tetragonal structure-I hydrate (TS-I) (n-С4H9)4NF · 32.8H2O, and cubic superstructure-I hydrate (CSS-I) (n-С4H9)4NF · 29.7H2O. The heats of fusion (ΔHf) of these polyhydrates were measured calorimetrically with differential scanning calorimeter. For TS-I polyhydrate ΔHf = (204.8 ± 2.3) kJ/mol hydrate, for CSS-I hydrate ΔHf = (177.5 ± 3.1) kJ/mol polyhydrate. The change of water molecules energy state in the water lattices of TS-I and CSS-I polyhydrates are discussed.
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页码：107 / 111
页数：4
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