PHASE AND X-RAY STUDY OF CLATHRATE FORMATION IN THE TETRAISOAMYLAMMONIUM FLUORIDE-WATER SYSTEM

被引：26

作者：

LIPKOWSKI, J ^{[1
]}

SUWINSKA, K ^{[1
]}

RODIONOVA, TV ^{[1
]}

UDACHIN, KA ^{[1
]}

DYADIN, YA ^{[1
]}

机构：

[1] RUSSIAN ACAD SCI,INST INORGAN CHEM,NOVOSIBIRSK 630090,RUSSIA

来源：

JOURNAL OF INCLUSION PHENOMENA AND MOLECULAR RECOGNITION IN CHEMISTRY | 1994年 / 17卷 / 02期

关键词：

CLATHRATE HYDRATE; PHASE DIAGRAM; CRYSTAL STRUCTURE; TETRAISOAMYLAMMONIUM FLUORIDE;

D O I：

10.1007/BF00711854

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The phase diagram of the binary (i-CsH11)4NF-water system has been studied in the clathrate formation region. Three polyhydrates have been discovered, two of which (I : 38.9 and 1 : 32.7) are the known orthorhombic arid tetragonal phases: Pbmn, a = 11.88, b = 21.53, c = 12.70 angstrom, rho(meas) = 1.019 g cm-3 (0-degrees-C), m.p. = 32.4-degrees-C and P4(2)/m, a = 23.729, c = 12.466 angstrom, rho(meas) = 1.062 g cm-3, (0-degrees-C), m.p. = 31.2-degrees-C, respectively. A single crystal X-ray analysis of the novel clathrate hydrate (i-C5H11)4NF . 27 H2O is reported. This new clathrate hydrate is tetragonal, I4(1)/a, with a = 16.894(5), c = 17.111(2) angstrom, Z = 4, (-50-degrees-C), and m.p. = 34.6-degrees-C. Each (i-C5H11)4N+ cation occupies a four-chamber cavity built of 15-hedra 7(1)6(3)5(9)4(2) (idealized description), with small vacant 5(4)4(4) cavities filling the intervening space.

引用

页码：137 / 148

页数：12

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