Synthesis, structure, and characterization of two new bismuth(III) selenite/tellurite nitrates: [(Bi3O2)(SeO3)2](NO3) and [Bi(TeO3)](NO3)
| Autor: | Pei-Qing Hu, Chang-Yu Meng, Lei Geng, Ming-Fang Wei, Wen-Dan Cheng, Meng-Xia Yu |
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| Rok vydání: | 2016 |
| Předmět: |
Absorption spectroscopy
Infrared Chemistry Inorganic chemistry chemistry.chemical_element 02 engineering and technology Electronic structure 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Hydrothermal circulation 0104 chemical sciences Electronic Optical and Magnetic Materials Bismuth Inorganic Chemistry Crystallography Materials Chemistry Ceramics and Composites Density functional theory Physical and Theoretical Chemistry 0210 nano-technology Powder diffraction Monoclinic crystal system |
| Zdroj: | Journal of Solid State Chemistry. 239:46-52 |
| ISSN: | 0022-4596 |
| DOI: | 10.1016/j.jssc.2016.04.013 |
| Popis: | Two new bismuth(III) selenite/tellurite nitrates, [(Bi 3 O 2 )(SeO 3 ) 2 ](NO 3 ) and [Bi(TeO 3 )](NO 3 ), have been synthesized by conventional facile hydrothermal method at middle temperature 200 °C and characterized by single-crystal X-ray diffraction, powder diffraction, UV–vis–NIR optical absorption spectrum, infrared spectrum and thermal analylsis. Both [(Bi 3 O 2 )(SeO 3 ) 2 ](NO 3 ) and [Bi(TeO3)](NO3) crystallize in the monoclinic centronsymmetric space group P2 1 /c with a =9.9403(4) A, b =9.6857(4) A, c =10.6864(5) A, β= 93.1150(10)° for [(Bi 3 O 2 )(SeO 3 ) 2 ](NO 3 ) and a =8.1489(3) A, b =9.0663(4) A, c =7.4729(3) A, β= 114.899(2)° for Bi(TeO3)(NO3), respectively. The two compounds, whose structures are composed of three different asymmetric building units, exhibit two different types of structures. The structure of [(Bi 3 O 2 )(SeO 3 ) 2 ](NO 3 ) features a three-dimensional (3D) bismuth(III) selenite cationic tunnel structure [(Bi 3 O 2 )(SeO 3 ) 2 ] 3 ∞ with NO 3 − anion group filling in the 1D tunnel along b axis. The structure of [Bi(TeO 3 )](NO 3 ) features 2D bismuth(III) tellurite [Bi(TeO 3 ) 2 ] 2 ∞ layers separated by NO 3 − anion groups. The results of optical diffuse-reflectance spectrum measurements and electronic structure calculations based on density functional theory methods show that the two compounds are wide band-gap semiconductors. |
| Databáze: | OpenAIRE |
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