查看“︁二碘化锎”︁的源代码

{{Chembox
|ImageFile=Kristallstruktur Cadmiumchlorid.png
|OtherNames=碘化锎(II)
|Section3={{Chembox Structure
|CrystalStruct=氯化镉
|LattConst_a=743.4&nbsp;±&nbsp;1.1&nbsp;pm
}}
|Section1={{Chembox Identifiers
| CASNo= 49774-08-5
|SMILES=[I-].[I-].[Cf+2]
}}
|Section2={{Chembox Properties
| Appearance= 深紫色固体<ref name="CfI2" />
|Cf=1|I=2
}}
|Section8={{Chembox Related
|OtherCpds=[[三碘化锎]]
}}
}}

'''二碘化锎'''是一种[[锎]]的[[碘化物]]，[[化学式]] CfI<sub>2</sub>。它是深紫色的固体<ref name="CfI2">J. F. Wild, E. K. Hulet, R. W. Lougheed, W. N. Hayes: [http://www.osti.gov/scitech/biblio/4112126 ''Preparation of Californium Diiodide''] {{Wayback|url=http://www.osti.gov/scitech/biblio/4112126 |date=20170222053724 }}, Symposium Commemorating the 25th Anniversary of the Discovery of Elements 97 and 98; 20. Januar 1975; Berkeley, USA.</ref>。它可以由[[三碘化锎]]（CfI<sub>3</sub>）在570&nbsp;°C的石英细管中被高纯[[氢气]]（H<sub>2</sub>）还原而成：<ref name="CfI2" />

:<chem>2 CfI3 + H2 -> 2 CfI2 + 2 HI</chem>

在稍高的温度下，它会熔化并与细管中的二氧化硅反应，产生CfOI。<ref name="STUDIES">J. F. Wild, E. K. Hulet, R. W. Lougheed, W. N. Hayes, J. R. Peterson, R. L. Fellows, J. P. Young: ''Studies of Californium (II) and (III) Iodides'', in: ''[[J. Inorg. Nucl. Chem.]]'', '''1978''', ''40''&nbsp;(5), S.&nbsp;811–817 ([[doi:10.1016/0022-1902(78)80157-2]]).</ref>

二碘化锎有两种晶体结构，一种是在室温下稳定的[[氯化镉|CdCl<sub>2</sub>]]结构晶体，晶格参数 ''a''&nbsp;=&nbsp;743.4&nbsp;±&nbsp;1.1&nbsp;pm和α&nbsp;=&nbsp;35.83&nbsp;±&nbsp;0.07°；另一种则是亚稳定的[[碘化镉|CdI<sub>2</sub>]]结构晶体，晶格参数''a''&nbsp;=&nbsp;455.7&nbsp;±&nbsp;0.4&nbsp;pm 和''c''&nbsp;=&nbsp;699.2&nbsp;±&nbsp;0.6&nbsp;pm。<ref name="STUDIES" />二碘化锎的吸收带波长范围为300至1100 nm，这证明了Cf(II)的存在。<ref name="STUDIES" />

== 参考资料==
<references />

== 扩展阅读==
* Richard G. Haire: [http://radchem.nevada.edu/classes/rdch710/files/Californium.pdf ''Californium''] {{Wayback|url=http://radchem.nevada.edu/classes/rdch710/files/Californium.pdf |date=20100717154045 }}, in: Lester R. Morss, Norman M. Edelstein, Jean Fuger (Hrsg.): ''The Chemistry of the Actinide and Transactinide Elements'', Springer, Dordrecht 2006; ISBN 1-4020-3555-1, S.&nbsp;1499–1576 ([[doi:10.1007/1-4020-3598-5_11]]).

{{锎化合物}}
{{碘化物}}
{{inorganic-compound-stub}}

[[Category:锎化合物]]
[[Category:碘化物]]