查看“︁CaHg2”︁的源代码

{{DISPLAYTITLE:CaHg<sub>2</sub>}}
{{Chembox
| Name = 
| NameEn = 
| ImageFile = Magnesium-diboride-3D-balls.png
|  ImageSize = 
|  ImageAlt = 
| IUPACName = 
| IUPACNameZh = 
| OtherNames = Hg<sub>2</sub>Ca
| Section1 = {{Chembox Identifiers
|   CASNo = 39461-25-1
|    CASNo_Ref = {{cascite|correct|CAS}}
|   PubChem = 
|   SMILES =  }}
| Section2 = {{Chembox Properties
|   Formula =  CaHg<sub>2</sub>
|   MolarMass = 441.26
|   Appearance = 晶体
|   Density = 9.8 g·cm<sup>−3</sup>
|   MeltingPtC = 746
|   BoilingPt = 
|   Solubility =  }}
| Section3 = {{Chembox Hazards
|   MainHazards = 
|   FlashPt = 
|   Autoignition =  }}
}}
'''CaHg<sub>2</sub>'''是[[钙]]和[[汞]]形成的[[金属间化合物]]，熔点746&nbsp;°C。<ref name="Лякишев"/>

== 制备 ==
CaHg<sub>2</sub>可由相应的单质在惰性气氛中按[[化学计量比]]反应得到：
:: <math>\mathsf{ Ca + 2 Hg \ \xrightarrow{746^oC}\ CaHg_2 }</math>

== 结构 ==
CaHg<sub>2</sub>以[[三斜晶系]]（[[空间群]]'''''P {{overline|3}}m1'''''）或[[六方晶系]]（空间群'''''P 6/mmm'''''）结晶，[[晶胞参数]]''a'' = 0.4894 nm，''c'' = 0.3571 nm，Z = 1，具有CeCd<sub>2</sub>或AlB<sub>2</sub>结构。
<ref name="Лякишев">{{книга
 |заглавие      = Диаграммы состояния двойных металлических систем |ответственный = Под ред. Н. П. Лякишева |место         = М.
 |издательство  = Машиностроение |год           = 1996 |том           = 1 |страниц       = 992 |isbn          = 5-217-02688-X
}}</ref><ref>{{книга
 |автор         = B. Predel
 |заглавие      = Ca-Hg (Calcium-Mercury)
 |издание       = Landolt-Börnstein - Group IV Physical Chemistry 
 |год           = 1993
 |том           = 5c
 |номер         = 
 |страницы      = 1-2
 |doi           = 10.1007/10086082_697
 |issn          = 
}}</ref><ref>{{книга
 |автор         = C. Guminski
 |заглавие      = The Ca-Hg (calcium-mercury) system
 |издание       = Journal of Phase Equilibria
 |год           = 1993
 |том           = 14
 |номер         = 1
 |страницы      = 90-96
 |doi           = 10.1007/BF02652166
 |issn          = 
}}</ref><ref>{{книга
 |автор         = G. Bruzzone, F. Merlo
 |заглавие      = The calcium-mercury system
 |издание       = Journal of the Less Common Metals
 |год           = 1973
 |том           = 32
 |номер         = 2
 |страницы      = 237-241
 |doi           = 10.1016/0022-5088(73)90091-X
 |issn          = 
}}</ref>

== 参考文献 ==
{{reflist}}

{{inorganic-compound-stub}}

[[Category:钙化合物]]
[[Category:汞化合物]]
[[Category:金属间化合物]]