查看“︁溴酸钡”︁的源代码

{{Chembox
| CustomizedImage= [[File:Α-Bariumiodat Struktur.png|250px|Kristallstruktur von Bariumiodat]]
| Section1= {{Chembox Identifiers
| CASNo= 13967-90-3 
| CASNo_Comment=无水
| CASNo_Ref = {{cascite|correct|CAS}}
| CASNo2=10326-26-8 
| CASNo2_Comment=一水
| CASNo2_Ref = {{cascite|correct|CAS}}
| EC-number= 237-750-5
| ECHA-ID         = 100.034.304
| PubChem         = 61706
| ChemSpider      = 
|SMILES=[Ba+2].[O-]Br(=O)=O.[O-]Br(=O)=O
}}
|Section2={{Chembox Properties
| Formula={{chem|Ba(BrO|3|)|2}}
| MolarMass    =  393.13（无水）
| Appearance= 无色晶体<ref name="GESTIS">{{GESTIS|Name=Bariumbromat|ZVG=127411|CAS=13967-90-3|Datum=8. Januar 2020}}.</ref>
| Odor=无
| Density= 3.99 g·cm<sup>−3</sup> （一水）<ref name="Perry">Dale L. Perry, Sidney L. Phillips: ''Handbook of inorganic compounds''. CRC Press, 1995, ISBN 978-0-8493-8671-8,  S. 47 ({{Google books|id=0fT4wfhF1AsC|page=47}}).</ref>
| MeltingPt= 260 [[摄氏度|°C]]（分解）<ref name="Perry"/>
| Solubility=  7.88 g·l<sup>−1</sup> 当 25&nbsp;°C（无水）<ref name="Perry"/>
| SolubleOther=不溶于[[酒精]]<ref name="Perry"/>
}}
| Section8={{Chembox Related
| OtherCations=[[溴酸钙]]<br />[[溴酸锶]]
| OtherAnions=[[溴化钡]]<br />[[氯酸钡]]<br />[[碘酸钡]]
}}
}}

'''溴酸钡'''是[[钡]]的[[溴酸盐]]，化学式 Ba(BrO<sub>3</sub>)<sub>2</sub>。

== 制备==
溴酸钡可以由[[氯化钡]]或[[乙酸钡]]和[[溴酸钾]]反应而成。<ref name="Gmelin">Leopold Gmelin, K. List: ''Handbuch der anorganischen Chemie'', Band 2, 1853, S. 146. ({{Google books|id=ydAPAAAAQAAJ|page=146}})</ref><ref name="Abegg">R. Abegg, F. Auerbach: "Handbuch der anorganischen Chemie". Verlag S. Hirzel, Bd. 2, 1908. S. 270.[http://www.archive.org/stream/a2handbuchderano02abeguoft#page/270/mode/2up/search/barium Volltext]</ref>

:<chem>BaCl2 + 2KBrO3 -> Ba(BrO3)2 + 2KCl</chem>
:<chem>(CH3COO)2Ba + 2KBrO3 -> Ba(BrO3)2 + 2CH3COOK</chem>

== 性质==
溴酸钡的结构类似α-[[碘酸钡]]，为[[单斜晶系]]，空间群C2/c（No. 15），[[晶格参数]]''a''&nbsp;=&nbsp;1332&nbsp;[[皮米|pm]]、''b''&nbsp;=&nbsp;790&nbsp;pm、''c''&nbsp;=&nbsp;858&nbsp;pm、''β''&nbsp;=&nbsp;134,2°。<ref name="Lutz">{{ZNaturforsch |Serie=B |Autor=H. D. Lutz, E. Alici, T. Kellersohn, P. Kuske |Titel=Zur Polymorphie des Ba(BrO<sub>3</sub>)<sub>2</sub> und Sr(IO<sub>3</sub>)<sub>2</sub>, Kristallstruktur, röntgenographische, schwingungsspektroskopische und thermoanalytische Untersuchungen |Jahr=1990 |Startseite=587 |Endseite=592 |URL= }}</ref> 溴酸钡在水中的溶解度随温度上升而上升。在 0&nbsp;°C时，溶解度为2.86&nbsp;g/L，25&nbsp;°C时为 7.88&nbsp;g/L，在99.65&nbsp;°C时为53.9&nbsp;g/L。<ref name="Perry"/>溴酸钡通常以一水合物 Ba(BrO<sub>3</sub>)<sub>2</sub>&nbsp;·&nbsp;H<sub>2</sub>O 存在，于190&nbsp;°C{{cn}}失水。<ref name="Abegg"/>它也是单斜晶系的，空间群 I2/c (No. 15)，晶格参数''a'' = 907.0 pm、''b'' = 789.5 pm、''c'' = 963.0 pm、''β'' = 93.26°。<ref>{{cite journal | last=Templeton | first=L. K. | last2=Templeton | first2=D. H. | title=Structure of barium bromate monohydrate | journal=Acta Crystallographica Section C Crystal Structure Communications | volume=45 | issue=4 | date=1989-04-15 | doi=10.1107/S0108270188013071 | pages=672–673}}</ref>它的二水合物也是已知的，为[[单斜晶系]]，空间群 C2/c（No. 15），晶格参数''a'' = 1043 pm、''b'' = 719.5 pm、''c'' = 837.5 pm、''β'' = 113.6°。<ref>{{cite journal | last=Lutz | first=H. D. | last2=Engelen | first2=B. | last3=Freiburg | first3=C. | title=Bariumbromiddihydrat | journal=Acta Crystallographica Section B Structural Crystallography and Crystal Chemistry | volume=36 | issue=2 | date=1980-02-01 | issn=0567-7408 | doi=10.1107/S0567740880003421 | pages=437–438}}</ref>

在260&nbsp;°C<ref name="Perry"/>时，溴酸钡分解成[[溴化钡]]和[[氧气]]。<ref name="Gmelin"/>

:<chem>Ba(BrO3)2 -> BaBr2 + 3O2 ^</chem>

== 参考资料==
<references />
{{钡化合物}}
{{溴酸盐}}

[[Category:钡化合物]]
[[Category:溴酸盐]]