Thermal expansion of L-ascorbic acid

被引：8

作者：

Nicolai, B. ^{[1
]}

Barrio, M. ^{[2
]}

Tamarit, J-Ll ^{[2
]}

Ceolin, R. ^{[3
]}

Rietveld, I. B. ^{[1
]}

机构：

[1] Univ Paris 05, Fac Pharm, Caracterisat Mat Mol Activite Therapeut CAMMAT, F-75006 Paris, France

[2] Univ Politecn Cataluna, Dept Fis, GCM, EEBE, Campus Diagonal Besos,Eduard Maristany 10-14, Barcelona 08019, Spain

[3] Univ Paris Sud, LETIAM, IUT Orsay, EA7357, Rue Noetzlin, F-91405 Paris, France

来源：

EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS | 2017年 / 226卷 / 05期

关键词：

NEUTRON POWDER DIFFRACTION; HYDROGEN-BOND PATTERNS; CRYSTAL-STRUCTURE; VITAMIN-C; PHASE-DIAGRAM; TEMPERATURE; TENSOR; POLYMORPHISM; PRESSURE;

D O I：

10.1140/epjst/e2016-60232-6

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The specific volume of vitamin C has been investigated by X-ray powder diffraction as a function of temperature from 110 K up to complete degradation around 440 K. Its thermal expansion is relatively small in comparison with other organic compounds with an expansivity alpha (v) of 1.2(3) x 10(-4) K-1. The structure consists of strongly bound molecules in the ac plane through a dense network of hydrogen bonds. The thermal expansion is anisotropic. Along the b axis, the expansion has most leeway and is about 10 times larger than in the other directions.

引用

页码：905 / 912

页数：8

共 50 条

[1] Thermal expansion of L-ascorbic acid
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[J]. The European Physical Journal Special Topics, 2017, 226 : 905 - 912
[2] L-Ascorbic Acid
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[J]. SYNLETT, 2009, (05) : 848 - 849
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