查看“︁三碘化铼”︁的源代码

{{Chembox
|ImageFile=ReI3.png
|OtherNames=碘化铼(III)
|Section3={{Chembox Structure
| CrystalStruct= 单斜晶系
| LattConst_a = 923.4 pm
|LattConst_b = 1130.9 pm
|LattConst_c=879.9 pm
|LattConst_beta=110.25
| SpaceGroup= P2<sub>1</sub>/m
}}
|Section1={{Chembox Identifiers
| CASNo= 15622-42-1
| EC-number= 239-698-9
| PubChem          = 12984320
|SMILES=[I-].[Re+3].[I-].[I-]
}}
|Section2={{Chembox Properties
| Appearance= 黑色固体<ref name="brauer" />
|Re=1|I=3
| Density= 6.37 g·cm<sup>−3</sup><ref name="brauer" />
| Melting= 800 °C（分解）<ref name="brauer" />
| Solubility= 难溶于水和稀酸<ref name="brauer" />
}}
}}

'''三碘化铼'''是[[铼]]的一种[[碘化物]]，化学式 ReI<sub>3</sub>。

== 制备 ==
三碘化铼可以由[[高铼酸]]和[[氢碘酸]]在[[乙醇]]或[[甲醇]]中反应而成。<ref name="brauer">{{cite book | author=hrsg. von Georg Brauer. Unter Mitarb. von M. Baudler | title=Handbuch der präparativen anorganischen Chemie / 3. | publisher=Enke | publication-place=Stuttgart | date=1981 | isbn=3-432-87823-0 | oclc=310719495 | language=de |page=1615}}</ref>
:<math>\mathrm{HReO_4 + 3 \ HI + 2 \ C_2H_5OH \longrightarrow ReI_3 + 4 \ H_2O + 2 \ CH_3CHO}</math>

它也可以由[[四碘化铼]]在350&nbsp;°C下热分解而成：<ref name="brauer" />
:<math>\mathrm{2 \ ReI_4 \longrightarrow 2 \ ReI_3 + I_2}</math>

[[三氯化铼]]和[[三碘化硼]]在310&nbsp;°C下反应，也可以得到三碘化铼。<ref name="brauer" />

== 性质==
三碘化铼是针状的黑色晶体，难溶于水和稀酸，不溶于甲醇、乙醇、乙醚、石油醚和四氯化碳。它可溶于[[液氨]]，但会被[[氨解]]。三碘化铼在真空下就会分解出碘，在高温下的分解更加迅速。<ref>{{cite book | last=Malatesta | first=L. | last2=Lock | first2=Colin | last3=Wilkinson | first3=Geoffrey | title=Inorganic Syntheses | chapter=Rhenium(III) Iodide | publisher=John Wiley & Sons, Inc. | publication-place=Hoboken, NJ, USA | date=2007-01-05 | issn=1934-4716 | doi=10.1002/9780470132388.ch50}}</ref>三碘化铼属于[[单斜晶系]]，空间群 P2<sub>1</sub>/m (No. 11)，[[晶格参数]] a = 923.4&nbsp;pm、b = 1130.9&nbsp;pm、c = 879.9&nbsp;pm和β = 110.25°。它的晶体由Re<sub>3</sub>I<sub>9</sub>三聚体组成。<ref name="Hans Peter Latscha, Martin Mutz">{{cite book | last=Latscha | first=Hans Peter | last2=Mutz | first2=Martin | title=Chemie der Elemente Chemie-Basiswissen IV | publication-place=Berlin, Heidelberg | date=2011 | isbn=978-3-642-16915-1 | oclc=712205352 | language=de |page=239}}</ref>

三碘化铼在空气下和[[吡啶]]、[[3-甲基吡啶]]和[[4-甲基吡啶]]反应，分别得到黄色的[ReO<sub>2</sub>(py)<sub>4</sub>]I、红橙色的[ReO<sub>2</sub>(3-Mepy)<sub>4</sub>](3-Mepy)I<sub>2</sub>和黄橙色的[ReO<sub>2</sub>(4-Mepy)<sub>4</sub>]I。<ref>{{cite journal | last=Krawczyk | first=Monika K. | last2=Krawczyk | first2=Marta S. | last3=Siczek | first3=Miłosz | last4=Lis | first4=Tadeusz | title=Products of reactions between ReX3 (X=Cl, I) and N-heterocyclic compounds – Structural and spectroscopic studies | journal=Inorganica Chimica Acta | publisher=Elsevier BV | volume=418 | year=2014 | issn=0020-1693 | doi=10.1016/j.ica.2014.04.002 | pages=84–92}}</ref>

== 参考资料 ==
<references />
{{铼化合物}}
{{碘化物}}

[[Category:铼化合物]]
[[Category:碘化物]]