Crystal structure and thermochemical properties of phase change materials bis(1-octylammonium) tetrachlorochromate

doi:10.1088/1674-1056/21/8/080702

Abstract A new crystalline complex (C₈H₁₇NH₃)₂CdCl₄(s) (abbreviated as C₈Cd(s)) is synthesized by liquid phase reaction. The crystal structure and composition of the complex are determined by single crystal X-ray diffraction, chemical analysis, and elementary analysis. It is triclinic, the space group is P-1 and Z = 2. The lattice potential energy of the title complex is calculated to be U_POT (C₈Cd(s))=978.83 kJ·mol^-1 from crystallographic data. Low-temperature heat capacities of the complex are measured by a precision automatic adiabatic calorimeter over a temperature range from 78 K to 384 K. The temperature, molar enthalpy, and entropy of the phase transition for the complex are determined to be 307.3± 0.15 K, 10.15± 0.23 kJ·mol^-1, and 33.05± 0.78 J·K^-1·mol^-1 respectively for the endothermic peak. Two polynomial equations of the heat capacities each as a function of temperature are fitted by the least-square method. Smoothed heat capacity and thermodynamic functions of the complex are calculated based on the fitted polynomials.

Keywords: bis(1-octylammonium) tetrachlorochromate X-ray crystallography phase change materials low-temperature heat capacity solid-solid phase transition

Received: 29 November 2011
Revised: 20 February 2012
Accepted manuscript online:

PACS:	07.20.Mc	(Cryogenics; refrigerators, low-temperature detectors, and other low-temperature equipment)
	61.50.Ks	(Crystallographic aspects of phase transformations; pressure effects)
	64.70.K-
	67.25.bd	(Thermodynamic properties)

Fund: Project supported by the National Natural Science Foundations of China (Grant Nos. 20673050 and 20973089).

Corresponding Authors: Di You-Ying
E-mail: diyouying@126.com, diyouying@lcu.edu.cn

Cite this article:

Lu Dong-Fei (卢冬飞), Di You-Ying (邸友莹), He Dong-Hua (何东华 ) Crystal structure and thermochemical properties of phase change materials bis(1-octylammonium) tetrachlorochromate 2012 Chin. Phys. B 21 080702

[1]	Maruoka N and Akiyama T 2003 J. Chem. Eng. Jpn. 36 794
[2]	Lu D F, Di Y Y and He D H 2011 Acta Phys. Chim. Sin. 27 1319
[3]	Liu Y P, Di Y Y, Dan W Y and He D H J. Therm. Anal. Calorim. DOI 10.1007/s10973-011-1737-9
[4]	Hawes D W, Banu D and Feldman D 1990 Solar Energy Mater. 21 61
[5]	Lee K W, Lee C E, Kim J and Kang J K 2002 Solid State Commun. 124 185
[6]	Liu Y P, Di Y Y, Dan W Y, He D H, Kong Y X and Yang W W 2011 Chin. Phys. B 20 028202
[7]	Kang J K, Choy J H and Madeleine R L 1993 J. Phys. Chem. Solids 54 1567
[8]	Li W P, Zhang D S, Zhang T P, Wang T Z, Ruan D S, Xing D Q and Li H B 1999 Thermochim. Acta 326 183
[9]	Wu K Z, Zhang J J and Liu X D 2009 Thermochim. Acta 483 55
[10]	Arend H and Huber W 1978 J. Cryst. Growth 43 213
[11]	Tan Z C, Shi Q, Liu B P and Zhang H T 2008 J. Therm. Anal. Calorim. 92 367
[12]	White M A 1984 Thermochim. Acta 74 55
[13]	Di Y Y, Kong Y X, Yang W W and Tan Z C 2008 Chin. Phys. B 17 3276
[14]	Yang W W, Di Y Y, Kong Y X and Tan Z C 2010 Chin. Phys. B 19 060517
[15]	Sheldrick G M 2008 Acta Cryst. A 64 112
[16]	Tan Z C, Liu B P, Yan J B and Sun L X 2003 J. Comput. Appl. Chem. 20 264
[17]	Ditmars D A, Ishiha S, Chang S S and Bernstein G 1982 J. Res. Natl. Bur. Stand. 87 159
[18]	Jenkins H D B and Glasser L 2002 Inorg. Chem. 41 4378
[19]	Kong Y X, Di Y Y, Yang W W, Lü Y F and Tan Z C 2010 Chin. J. Chem. 28 521
[20]	Di Y Y, Tan Z C, Wu X M, Meng S H and Qu S S 2000 Thermochim. Acta 356 143
[21]	Lee C H, Lee K W and Lee C E 2003 Curr. Appl. Phys. 3 477
[22]	Guo N and Wang W 1994 Chin. J. Appl. Chem. 11 25 (in Chinese)
[23]	Zuo P, Wu K Z, Cui W Z and Liu X D 2002 J. Hebei Norm. Univ. (Natural Science Edition) 26 53 (in Chinese)
[24]	Guo N, Wang W, Zeng G F and Xi S Q 1994 Acta Chim. Sin. 52 705 (in Chinese)
[25]	Tong B, Liu Q S, Tan Z C and Welz-Biermann U 2010 J. Phys. Chem. A 114 3782

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Crystal structure and thermochemical properties of phase change materials bis(1-octylammonium) tetrachlorochromate

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