查看“︁二硅化镎”︁的源代码

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| ImageFile = 
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| NameEn = Neptunium disilicide
|Section1={{Chembox Identifiers
| CASNo = 60862-56-8
| CASNo_Ref = {{cascite|correct|CAS}}
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| DTXSID = 
| UNII_Ref = {{fdacite|changed|FDA}}
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|Section2={{Chembox Properties
| Formula =  {{chem|Np|Si|2}}
| MolarMass = 293.17
| Appearance =  具有金属光泽的晶体
| Density = 9.03
| MeltingPtC = 
| BoilingPtC = 
| Solubility = 难溶}}
|Section6={{Chembox Related
| OtherCations = [[二硅化钚]]
| OtherAnions = [[二砷化镎]]
}}
}}
'''二硅化镎'''是一种[[无机化合物]]，化学式为{{chem|Np|Si|2}}，<ref name="CD">{{cite book |last1=Donnay |first1=J. D. H. |last2=Nowacki |first2=Werner |title=Crystal Data: Classification of Substances by Space Groups and their Identification from Cell Dimensions |date=1954 |publisher=[[Geological Society of America]] |isbn=978-0-8137-1060-0 |page=383 |url=https://books.google.ru/books?id=cY7wPiRzlUYC&pg=PA383&lpg=PA383&dq=Neptunium+silicide+NpSi2&source=bl&ots=oU3_1j32em&sig=ACfU3U2tPdVGB1Gqmvx_804yZahdH0sDKg&hl=en&sa=X&ved=2ahUKEwj7hObTkbXyAhX2SfEDHZQdBG4Q6AF6BAgQEAM#v=onepage&q=Neptunium%20silicide%20NpSi2&f=false |access-date=16 August 2021 |language=en |archive-date=2021-08-16 |archive-url=https://web.archive.org/web/20210816091128/https://books.google.ru/books?id=cY7wPiRzlUYC&pg=PA383&lpg=PA383&dq=Neptunium+silicide+NpSi2&source=bl&ots=oU3_1j32em&sig=ACfU3U2tPdVGB1Gqmvx_804yZahdH0sDKg&hl=en&sa=X&ved=2ahUKEwj7hObTkbXyAhX2SfEDHZQdBG4Q6AF6BAgQEAM#v=onepage&q=Neptunium%20silicide%20NpSi2&f=false }}</ref>其中Np为+3价。<ref>{{cite journal|journal=Physical Review B|volume=45|issue=17|language=en|issn=0163-1829|date=1992-05-01|pages=9765–9771|doi=10.1103/PhysRevB.45.9765|url=https://link.aps.org/doi/10.1103/PhysRevB.45.9765|title=Magnetic properties of NpGa 2 and NpSi 2|accessdate=2021-08-17|author=I. Yaar, S. Fredo, J. Gal, W. Potzel, G. M. Kalvius, F. J. Litterst}}</ref>它可以形成晶体，难溶于水。<ref>{{cite book |last1=Koch |first1=Günter |title=Transurane: Teil C: Die Verbindungen |date=5 October 2013 |publisher=[[Springer-Verlag]] |isbn=978-3-662-11547-3 |page=245 |url=https://books.google.ru/books?id=WCi2BgAAQBAJ&pg=PA245&lpg=PA245&dq=Neptunium+silicide+NpSi2&source=bl&ots=VDXuAG3-EQ&sig=ACfU3U1fZqIbLDyhwAXHV4Qkw_32IpOn5w&hl=en&sa=X&ved=2ahUKEwj7hObTkbXyAhX2SfEDHZQdBG4Q6AF6BAgPEAM#v=onepage&q=Neptunium%20silicide%20NpSi2&f=false |access-date=16 August 2021 |language=de |archive-date=2021-08-16 |archive-url=https://web.archive.org/web/20210816091200/https://books.google.ru/books?id=WCi2BgAAQBAJ&pg=PA245&lpg=PA245&dq=Neptunium+silicide+NpSi2&source=bl&ots=VDXuAG3-EQ&sig=ACfU3U1fZqIbLDyhwAXHV4Qkw_32IpOn5w&hl=en&sa=X&ved=2ahUKEwj7hObTkbXyAhX2SfEDHZQdBG4Q6AF6BAgPEAM#v=onepage&q=Neptunium%20silicide%20NpSi2&f=false }}</ref>

==制备及性质==
二硅化镎可由[[三氟化镎]]和硅粉在真空中反应得到：<ref name="NNC">{{cite book |last1=Sheft |first1=Irving |last2=Fried |first2=Sherman |title=New Neptunium Compounds |date=1950 |publisher=U.S. Atomic Energy Commission, Technical Information Division |page=4 |url=https://books.google.ru/books?id=c1bcqdRlz4IC&pg=PA4&lpg=PA4&dq=Neptunium+silicide&source=bl&ots=AYTVgVqSAy&sig=ACfU3U3WRHql8C1ZE4F-GRW5crAbGMgPsA&hl=en&sa=X&ved=2ahUKEwiZx5m4kLXyAhVzQvEDHQkCBCgQ6AF6BAgCEAM#v=onepage&q=Neptunium%20silicide&f=false |access-date=16 August 2021 |language=en |archive-date=2021-08-16 |archive-url=https://web.archive.org/web/20210816084548/https://books.google.ru/books?id=c1bcqdRlz4IC&pg=PA4&lpg=PA4&dq=Neptunium+silicide&source=bl&ots=AYTVgVqSAy&sig=ACfU3U3WRHql8C1ZE4F-GRW5crAbGMgPsA&hl=en&sa=X&ved=2ahUKEwiZx5m4kLXyAhVzQvEDHQkCBCgQ6AF6BAgCEAM#v=onepage&q=Neptunium%20silicide&f=false }}</ref>
::<math>\mathsf{ 4NpF_3 + 11Si \ \xrightarrow{1500^oC}\ 4NpSi_2 + 3SiF_4 }</math>

它是[[四方晶系]]晶体，空间群''I''41/''amd''，晶胞参数a = 3.96 Å，c = 13.67 Å, Z = 4。<ref name="MP">{{cite web |title=mp-21298: NpSi2 (tetragonal, I4_1/amd, 141) |url=https://materialsproject.org/materials/mp-21298/ |publisher=[[materialsproject.org]] |access-date=16 August 2021 |archive-date=2021-08-16 |archive-url=https://web.archive.org/web/20210816090310/https://materialsproject.org/materials/mp-21298/ }}</ref>

它在水中无明显现象，但可以和[[盐酸]]剧烈反应：<ref name="NNC"/>：
::<math>\mathsf{ NpSi_2 + 8HCl \ \xrightarrow\ NpCl_4 + 2SiH_4 }</math>

==参考文献==
{{Reflist|2}}

{{镎化合物}}
{{硅化物}}

[[Category:镎化合物]]
[[Category:硅化物]]