Formation of metastable crystals Of [C4mim][NTf2] and[C6mim][NTf2]

被引：13

作者：

Blokhin, A. V. ^{[1
]}

Paulechka, Y. U. ^{[1
]}

Kabo, G. J. ^{[1
]}

机构：

[1] Belarusian State Univ, Fac Chem, Minsk 220030, BELARUS

来源：

THERMOCHIMICA ACTA | 2006年 / 445卷 / 01期

关键词：

bis(trifluoromethylsulfonyl)imide ionic liquids; metastable crystals; adiabatic calorimetry;

D O I：

10.1016/j.tca.2006.02.034

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Heat capacities of crystalline 1-butyl-3-methylimidazoliumbis(trifluoromethylsulfonyl)imide [C(4)mim][NTf2] and 1-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide [C(6)mim][NTf2] in the range 80 K-T-fus were measured in an adiabatic calorimeter. Anomalies in the heat-capacity curves for the both compounds occurred near 240 K. Positions of the anomalies depended on thermal history of the samples. More stable crystals had higher heat capacities in the range 220-260 K. Below 200 K heat capacities of all the crystals of the same compound were indistinguishable. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：75 / 77

页数：3

共 6 条

[1]

*IUPAC, 20020051100 IUPAC

[2] Thermodynamic properties of 1-butyl-3-methylimidazolium hexafluorophosphate in the condensed state [J].

Kabo, GJ ;

Blokhin, AV ;

Paulechka, YU ;

Kabo, AG ;

Shymanovich, MP ;

Magee, JW .

JOURNAL OF CHEMICAL AND ENGINEERING DATA, 2004, 49 (03) :453-461

[3]

PAULECHKA YU, 2005, 1 INT C ION LIQ SALZ, P115

[4] Reference materials for calorimetry and differential thermal analysis [J].

Sabbah, R ;

An, XW ;

Chickos, JS ;

Leitao, MLP ;

Roux, MV ;

Torres, LA .

THERMOCHIMICA ACTA, 1999, 331 (02) :93-204

[5] Conductivity, NMR and crystallographic study of N,N,N,N-tetramethylammonium dicyanamide plastic crystal phases:: an archetypal ambient temperature plastic electrolyte material [J].

Seeber, AJ ;

Forsyth, M ;

Forsyth, CM ;

Forsyth, SA ;

Annat, G ;

MacFarlane, DR .

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2003, 5 (12) :2692-2698

[6]

Wasserscheid P., 2002, IONIC LIQUIDS SYNTHE

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