Characterization and thermal analysis of thiourea and bismuth trichloride complex
| Autor: | Shao Rong Luan, Yihua Zhu, Qing Cao, Yu Qing Jia |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
Analytical chemistry
chemistry.chemical_element Crystal structure Triclinic crystal system Condensed Matter Physics Bismuth Thermogravimetry Crystallography chemistry.chemical_compound chemistry Thiourea Differential thermal analysis Physical and Theoretical Chemistry Ionic compound Thermal analysis |
| Zdroj: | Journal of Thermal Analysis and Calorimetry. 99:523-530 |
| ISSN: | 1572-8943 1388-6150 |
| Popis: | A complex of thiourea and bismuth trichloride has been synthesized. Its composition is Bi3Cl9[SC(NH2)2]7. Crystallographic data are a = 7.141(2) A, b = 8.820(3) A, c = 16.365(5) A, α = 99.389(4)°, β = 95.422(4)°, γ = 106.177(4)°, triclinic system. There are the mononuclear anion [BiCl5SC(NH2)2]2− and the dinuclear cation {Bi2Cl4[SC(NH2)2]6}2+ with the Bi–Cl–Bi bridge bonds in the complex. The electric conductance of the absolute methanol solution contained the complex indicates that the complex is an ionic compound. Raman spectra indicate that the bismuth ion is coordinated by the sulfur atoms of the thiourea. The thermal analysis verifies the structure of complex. The TG–MASS curves show the structure rearrangement in the complex at about 118 °C. The DSC curves and calculation means that the structure rearrangement is irreversible. |
| Databáze: | OpenAIRE |
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