查看“︁二碘化钕”︁的源代码

{{Chembox
| ImageFile=Cotunnite structure.png
|Section1={{Chembox Identifiers
| CASNo=61393-36-0
| CASNo_Ref = {{cascite|correct|CAS}}
| EC-number= 622-142-8
| PubChem          = 57351516
| ChemSpider       = 
| SMILES=[I-].[Nd+2].[I-]
| InChI = InChI=1S/2HI.Nd/h2*1H;/p-2
| InChIKey =  XKFMXEILCPYOQT-UHFFFAOYSA-L

}}
|Section2={{Chembox Properties
| Appearance= 深紫黑色固体<ref name="brauer" />
| Nd=1|I=2
| Density= 5.85 g·cm<sup>−3</sup><ref name="AMERICAN ELEMENTS">AMERICAN ELEMENTS: [http://www.americanelements.com/ndi.html Neodymium Iodide NdI2], abgerufen am 2. Mai 2014</ref>
| MeltingPt= 562 °C<ref name="brauer" />
|BoilingPt=
| Solubility=
}}
|Section8={{Chembox Related
| OtherAnions=[[二氟化钕]]<br />[[二氯化钕]]<br />[[二溴化钕]]
| OtherCations=[[二碘化钐]]
| OtherCpds=[[三碘化钕]]
}}
}}

'''二碘化钕'''是一种[[钕]]的[[碘化物]]，化学式 NdI<sub>2</sub>。

== 制备 ==
二碘化钕可以由[[三碘化钕]]在[[真空]]， 800 至900 °C 的温度下被金属钕还原而成。<ref name="brauer">{{{cite book | title=Handbuch der präparativen anorganischen Chemie | publisher=Enke | publication-place=Stuttgart | year=1975 | isbn=3-432-02328-6 | oclc=310719485 | language=de | ref={{sfnref | Enke | 1975}} |page=1081}}</ref>
:<math>\mathrm{ Nd + 2 \ NdI_3 \longrightarrow 3 \ NdI_2}</math>

它也可以由钕和[[二碘化汞]]反应而成。<ref name="brauer" />
:<math>\mathrm{Nd + HgI_2 \longrightarrow NdI_2 + Hg}</math>

它也可以由钕和碘直接反应而成。<ref name="Gschneidner">{{cite book | last=Gschneidner | first=Karl | title=Handbook on the physics and chemistry of rare earths | publisher=North Holland/Elsevier | publication-place=Amsterdam Boston | year=2010 | isbn=0-08-093257-6 | oclc=664572103 |page=247}}</ref>
:<math>\mathrm{Nd + I_2 \longrightarrow NdI_2}</math>

这种化合物是于 1961年由 John D. Corbett 首次合成的。<ref name="DOI10.1007/BF01317584">{{cite journal | last=Jungmann | first=Angelika | last2=Claessen | first2=R. | last3=Zimmermann | first3=R. | last4=Meng | first4=Ge | last5=Steiner | first5=P. | last6=Hüfner | first6=S. | last7=Tratzky | first7=S. | last8=Stöwe | first8=K. | last9=Beck | first9=H. P. | title=Photoemission of LaI2 and CeI2 | journal=Zeitschrift für Physik B Condensed Matter | publisher=Springer Science and Business Media LLC | volume=97 | issue=1 | year=1995 | issn=0722-3277 | doi=10.1007/bf01317584 | pages=25–34}}</ref>

== 性质==
二碘化钕是一种深紫黑色固体，极易[[潮解]]。它的[[晶体结构]]为[[溴化锶]]结构。<ref name="brauer" />在高压下，它会变成[[二硅化钼]]结构，在常态下的其它镧系元素二碘化物中（例如[[二碘化镧]]）中存在。<ref name="Ralf Alsfasser, Erwin Riedel">{{cite book | last=Riedel | first=Erwin | title=Moderne anorganische Chemie : mit CD-ROM : [133 Tabellen | publisher=Gruyter | publication-place=Berlin | year=2007 | isbn=3-11-019060-5 | oclc=237200027 | language=de |page=188}}</ref>它和[[四氢呋喃]]或其它有机化合物反应，形成配合物。<ref name="DOI10.1002/1521-3757(20010903)">{{cite journal | last=Bochkarev | first=Mikhail N. | last2=Fedushkin | first2=Igor L. | last3=Dechert | first3=Sebastian | last4=Fagin | first4=Anatolii A. | last5=Schumann | first5=Herbert | title=[NdI2(thf)5], der erste kristallographisch charakterisierte Neodym(II)-Komplex | journal=Angewandte Chemie | publisher=Wiley | volume=113 | issue=17 | date=2001-09-03 | issn=0044-8249 | doi=10.1002/1521-3757(20010903)113:17<3268::aid-ange3268>3.0.co;2-k | pages=3268–3270 | language=de}}</ref><ref name="DOI10.1023/A:1026132017155">{{cite journal | last=Khoroshen'kov | first=G. V. | last2=Fagin | first2=A. A. | last3=Bochkarev | first3=M. N. | last4=Dechert | first4=S. | last5=Schumann | first5=H. | journal=Russian Chemical Bulletin | publisher=Springer Science and Business Media LLC | volume=52 | issue=8 | year=2003 | issn=1066-5285 | doi=10.1023/a:1026132017155 | pages=1715–1719}}</ref><ref name="DOI10.1016/j.poly.2005.08.050">{{cite journal | last=Fagin | first=Anatolii A. | last2=Balashova | first2=Tatyana V. | last3=Kusyaev | first3=Dmitrii M. | last4=Kulikova | first4=Tatyana I. | last5=Glukhova | first5=Tatyana A. | last6=Makarenko | first6=Natalya P. | last7=Kurskii | first7=Yurii A. | last8=Evans | first8=William J. | last9=Bochkarev | first9=Mikhail N. | title=Reactions of neodymium(II) iodide with organohalides | journal=Polyhedron | publisher=Elsevier BV | volume=25 | issue=5 | year=2006 | issn=0277-5387 | doi=10.1016/j.poly.2005.08.050 | pages=1105–1110}}</ref>

二碘化钕可以还原热的氮气，形成[[氮碘化物]] (NdI<sub>2</sub>)<sub>3</sub>N，后者和THF反应生成 (Nd<sub>I</sub>)<sub>3</sub>N<sub>2</sub>。<ref>{{cite journal |last1=Fagin |first1=A. A. |last2=Salmova |first2=S. V. |last3=Bochkarev |first3=M. N. |title=Reduction of nitrogen with neodymium(II) and dysprosium(II) diiodides and selected properties of the resulting nitrides |journal=Russian Chemical Bulletin |date=January 2009 |volume=58 |issue=1 |pages=230–233 |doi=10.1007/s11172-009-0034-2}}</ref>

== 用处==
二碘化钕是一种[[还原剂]]，也是有机化学<ref>{{cite book | last=Gschneidner | first=Karl | title=Handbook on the physics and chemistry of rare earths | publisher=North Holland/Elsevier | publication-place=Amsterdam Boston | year=2010 | isbn=0-08-093257-6 | oclc=664572103 |page=261}}</ref>的[[催化剂]]<ref name="Fundamental Chemistry">{{cite book | last=Nuyken | first=O | title=Neodymium based Ziegler catalysts : fundamental chemistry | url=https://archive.org/details/neodymiumbasedzi00nuyk | publisher=Springer | publication-place=Berlin Great Britain | year=2006 | isbn=3-540-34809-3 | oclc=262692810 |page=[https://archive.org/details/neodymiumbasedzi00nuyk/page/n22 13]}}</ref>。

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

[[Category:钕化合物]]
[[Category:碘化物]]
[[Category:二价镧系元素化合物]]
[[Category:1960年代发现的物质]]