查看“︁二碲化钨”︁的源代码

{{chembox
| Verifiedfields = changed
| Watchedfields  = changed
| verifiedrevid  = 428739199
| NameEn           = Tungsten(IV) telluride
| Reference      = <ref name="hand">
{{cite book | last = Lide | first = David R. | year = 1998
 | title = Handbook of Chemistry and Physics
 | url = https://archive.org/details/isbn_9780849305948 | edition = 87 | location = Boca Raton, Florida
 | publisher = CRC Press
 | isbn = 0-8493-0594-2 | pages = [https://archive.org/details/isbn_9780849305948/page/4 4]–92}}</ref>
| ImageFile      = Tungsten ditelluride WTe2 - distorted 1T or Td structure - W gray Te red.png
| ImageSize      = 250px
| ImageFile2     = Tungsten ditelluride WTe2 - single layer top view - distorted 1T or Td structure - W gray Te red.png
| ImageSize2     = 250px
| ImageCaption2  = '''Top''': Crystal structure of WTe<sub>2</sub>. '''Bottom''': Single layer of WTe<sub>2</sub> viewed from above. (W:gray, Te:red)
| OtherNames     = 碲化钨(IV)
| IUPACName      = 
| SystematicName = 
| Section1       = {{Chembox Identifiers
|   CASNo_Ref = {{cascite|correct|??}}
| CASNo = 12067-76-4
|   PubChem = 82913
|   EINECS = 235-086-0
|   InChI = 1S/2Te.W
|   InChIKey = WFGOJOJMWHVMAP-UHFFFAOYSA-N
|   SMILES = [Te]=[W]=[Te]
  }}
| Section2       = {{Chembox Properties
|   Formula = WTe<sub>2</sub>
|   MolarMass = 439.04
|   Appearance = 灰色晶体<ref name="William M. Haynes">{{Literatur| Autor=William M. Haynes | Titel=CRC Handbook of Chemistry and Physics, 94th Edition  | Verlag=CRC Press | ISBN=978-1-4665-7115-0 | Jahr=2016 | Online={{Google Buch | BuchID=MmDOBQAAQBAJ | Band=4 | Seite=97 }} | Seiten=97 }}</ref>
|   Density = 9.43 g/cm<sup>3</sup>，固体
|   MeltingPtC = 972
|   Melting_notes=分解<ref name="Erik Lassner, Wolf-Dieter Schubert" />
|   Solubility = 不溶
|   SolubleOther = 不溶于[[氨]]，盐酸和硫酸<ref name="Erik Lassner, Wolf-Dieter Schubert" />，在硝酸里分解<ref name="Erik Lassner, Wolf-Dieter Schubert" />
  }}
| Section3       = {{Chembox Structure
|   CrystalStruct = [[正交晶系]]，[[皮尔逊符号|oP12]]
|   SpaceGroup = Pmn2<sub>1</sub>, No. 31
| LattConst_a = 3.50 Å
| LattConst_b = 6.34 Å
| LattConst_c = 15.4 Å
| Reference = <ref name="MaterialsProject_WTe2">{{cite journal |last1=Persson |first1=Kristin |title=Materials Data on Te2W by Materials Project |date=2020 |publisher=LBNL Materials Project; Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States) |doi=10.17188/1198898 |osti=1198898 }}</ref>
  }}
| Section4       = 
| Section5       = 
| Section6       = 
| Section7       = {{Chembox Hazards
  }}
}}

'''二碲化钨'''是[[钨]]的[[碲化物]]，化学式 WTe<sub>2</sub>。

== 制备 ==
二碲化钨可以由[[钨]]和[[碲]]在 800 °C 的真空下直接反应而成。<ref name="DOI10.1016/S0021-9614(05)80034-5">Jane E. Callanan, G.A. Hope, Ron D. Weir, Edgar F. Westrum: ''Thermodynamic properties of tungsten ditelluride (WTe2) I. The preparation and lowtemperature heat capacity at temperatures from 6 K to 326 K.'' In: ''The Journal of Chemical Thermodynamics.'' 24, 1992, S.&nbsp;627, {{DOI|10.1016/S0021-9614(05)80034-5}}.</ref>
:<math>\mathrm{W + 2 \ Te \longrightarrow WTe_2 }</math>

== 性质==
二碲化钨是一种灰色固体，<ref name="William M. Haynes" />不溶于水。在 650 °C 时，二碲化钨会和[[氧气]]反应，600 °C时在真空中分解。<ref name="Erik Lassner, Wolf-Dieter Schubert">{{Literatur| Autor=Erik Lassner, Wolf-Dieter Schubert | Titel=Tungsten Properties, Chemistry, Technology of the Element, Alloys, and Chemical Compounds | Verlag=Springer Science & Business Media | ISBN=978-1-4615-4907-9 | Jahr=2012 | Online={{Google Buch | BuchID=GnPdBwAAQBAJ | Seite=167 }} | Seiten=167 }}</ref>它是[[正交晶系]]的，空间群 Pmn2<sub>1</sub> (No. 31)。<ref name="DOI10.1107/S0365110X66000513">B. E. Brown: ''The crystal structures of WTe2 and high-temperature MoTe2.'' In: ''Acta Crystallographica.'' 20, 1966, S.&nbsp;268, {{DOI|10.1107/S0365110X66000513}}.</ref> 它有着层状结构。<ref name="DOI10.1038/srep10013">Chia-Hui Lee, Eduardo Cruz Silva, Lazaro Calderin, Minh An T. Nguyen, Matthew J. Hollander, Brian Bersch, Thomas E. Mallouk, Joshua A. Robinson: ''Tungsten Ditelluride: a layered semimetal.'' In: ''Scientific Reports.'' 5, 2015, S.&nbsp;10013, {{DOI|10.1038/srep10013}}.</ref>

== 用处==
二碲化钨可用于半导体工业。<ref name="Dale L. Perry">{{Literatur| Autor=Dale L. Perry | Titel=Handbook of Inorganic Compounds, Second Edition  | Verlag=CRC Press | ISBN=978-1-4398-1462-8 | Jahr=2016 | Online={{Google Buch | BuchID=SFD30BvPBhoC | Seite=442 }} | Seiten=442 }}</ref>

== 参考资料==
<references />
{{钨化合物}}
{{碲化物}}

[[Category:钨化合物]]
[[Category:碲化物]]
[[Category:过渡金属二硫属化物]]