Citation:
JIAO Zhi-Wei, DUAN Cui-Cui, CAO Lei-Ganga, CUI Yan, LIU Feng-Bin, WANG Hai-Jun. Synthesis, Structure Characterization and Thermal Analysis of a New Cadmium Zinc Borate in the Pseudo-binary System Cd3B2O6-Zn3B2O6[J]. Chinese Journal of Structural Chemistry,
2016, 35(11): 1679-1685.
doi:
10.14102/j.cnki.0254-5861.2011-1189
Synthesis, Structure Characterization and Thermal Analysis of a New Cadmium Zinc Borate in the Pseudo-binary System Cd3B2O6-Zn3B2O6
摘要:
Cd-rich portion of the pseudo-binary system Cd3B2O6-Zn3B2O6 was investigated. A new cadmium zinc borate, Cd2.42Zn0.58B2O6, was synthesized successfully by a traditional solid-state reaction method. The compound crystallizes in the monoclinic space group C2/c with a=17.3048, b=8.4356, c=10.2962 Å, β=93.157°, V=1500.7(2) Å3, Dc=5.683 g/cm3, F(000)=2301, Z=24, R=0.0351 and wR=0.0741. In its structure, BO3 triangle, CdO6 and CdO5 (or ZnO5) polyhedra are joined together by sharing bridging O atoms to form an intricate three-dimensional framework. A comparison of the structures of Cd2.42Zn0.58B2O6, α-Cd3B2O6 and β-Cd3B2O6 is presented. The IR spectrum confirms the presence of BO3 unit. The UV cut-off wavelength of Cd2.42Zn0.58B2O6 is 313 nm. The differential thermal analysis (DTA) suggests that Cd2.42Zn0.58B2O6 is an incongruent melting compound.
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关键词:
- borate
- / crystal structure
- / IR
- / DTA
English
Synthesis, Structure Characterization and Thermal Analysis of a New Cadmium Zinc Borate in the Pseudo-binary System Cd3B2O6-Zn3B2O6
Abstract:
Cd-rich portion of the pseudo-binary system Cd3B2O6-Zn3B2O6 was investigated. A new cadmium zinc borate, Cd2.42Zn0.58B2O6, was synthesized successfully by a traditional solid-state reaction method. The compound crystallizes in the monoclinic space group C2/c with a=17.3048, b=8.4356, c=10.2962 Å, β=93.157°, V=1500.7(2) Å3, Dc=5.683 g/cm3, F(000)=2301, Z=24, R=0.0351 and wR=0.0741. In its structure, BO3 triangle, CdO6 and CdO5 (or ZnO5) polyhedra are joined together by sharing bridging O atoms to form an intricate three-dimensional framework. A comparison of the structures of Cd2.42Zn0.58B2O6, α-Cd3B2O6 and β-Cd3B2O6 is presented. The IR spectrum confirms the presence of BO3 unit. The UV cut-off wavelength of Cd2.42Zn0.58B2O6 is 313 nm. The differential thermal analysis (DTA) suggests that Cd2.42Zn0.58B2O6 is an incongruent melting compound.
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Key words:
- borate
- / crystal structure
- / IR
- / DTA
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