Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 89: Issue 2
Crystal structure and thermal analysis of diaquadi (1,2,4-triazol-5-one)zinc(II) ion nitrate
Authors:
N. Li Northwest University Shaanxi Key Laboratory of Physico-Inorganic Chemistry, Department of Chemistry Xi’an Shaanxi 710069 P.R. China

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S. Chen Northwest University Shaanxi Key Laboratory of Physico-Inorganic Chemistry, Department of Chemistry Xi’an Shaanxi 710069 P.R. China

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S. Gao Northwest University Shaanxi Key Laboratory of Physico-Inorganic Chemistry, Department of Chemistry Xi’an Shaanxi 710069 P.R. China

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Pages:
583–588
Online Publication Date:
13 Feb 2007
Publication Date:
01 Aug 2007
Article Category:
Research Article
DOI:
https://doi.org/10.1007/s10973-006-7600-8
Keywords:
crystal structure; standard enthalpy of solution; thermal analysis; 1,2,4-triazole-5-one (TO); zinc complex
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Abstract  

A new complex, diaquadi(1,2,4-triazol-5-one)zinc(II) ion nitrate formulated as {[Zn(TO)2(H2O)2](NO3)2}n (1) (1,2,4-triazole-5-one, abbreviated as: TO) was synthesized and characterized by elemental analysis, X-ray single crystal diffraction, infrared spectrum (IR), differential scanning calorimetry (DSC), thermogravimetric analysis and differential thermogravimetric analysis (TG-DTG). The X-ray structure analysis reveals that the complex is orthorhombic with space group Pbca and unit-cell parameters a=6.9504(2) �; b=10.6473(3) �; c=17.8555(5) �. Based on the result of thermal analysis, the thermal decomposition process of the compound was derived. From measurement of the enthalpy of solution in water in 298.15 K, the standard molar enthalpy of solution of lignand TO and the complex were determined as 15.43�0.18 and 52.64�0.42 kJ mol−1, respectively. In addition, the standard molar enthalpy of formation of TO(aq) was calculated as −126.97�0.72 kJ mol−1.

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Cover Journal of Thermal Analysis and Calorimetry
Journal of Thermal Analysis and Calorimetry
Print ISSN:
1388-6150
Online ISSN:
1572-8943

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation		 1969
Volumes
per Year		 1
Issues
per Year		 24
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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