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二碲化钨

二碲化钨[1]
英文名 Tungsten(IV) telluride
别名 碲化钨(IV)
识别
CAS号 12067-76-4  checkY
PubChem 82913
SMILES
 
  • [Te]=[W]=[Te]
InChI
 
  • 1S/2Te.W
InChIKey WFGOJOJMWHVMAP-UHFFFAOYSA-N
EINECS 235-086-0
性质
化学式 WTe2
摩尔质量 439.04 g·mol⁻¹
外观 灰色晶体[2]
密度 9.43 g/cm3,固体
熔点 972 °C(1245 K)(分解[3]
溶解性 不溶
溶解性 不溶于,盐酸和硫酸[3],在硝酸里分解[3]
结构[4]
晶体结构 正交晶系oP12
空间群 Pmn21, No. 31
晶格常数 a = 3.50 Å, b = 6.34 Å, c = 15.4 Å
若非注明,所有数据均出自标准状态(25 ℃,100 kPa)下。

二碲化钨碲化物,化学式 WTe2

制备

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二碲化钨可以由在 800 °C 的真空下直接反应而成。[5]

性质

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二碲化钨是一种灰色固体,[2]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。[3]它是正交晶系的,空间群 Pmn21 (No. 31)。[6] 它有着层状结构。[7]

用处

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二碲化钨可用于半导体工业。[8]

参考资料

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  1. ^ Lide, David R. Handbook of Chemistry and Physics 87. Boca Raton, Florida: CRC Press. 1998: 4–92. ISBN 0-8493-0594-2. 
  2. ^ 2.0 2.1 William M. Haynes, [《二碲化钨》在Google Books的內容。 CRC Handbook of Chemistry and Physics, 94th Edition], CRC Press. 2016: pp. 97, (德文) 
  3. ^ 3.0 3.1 3.2 3.3 Erik Lassner, Wolf-Dieter Schubert, [《二碲化钨》在Google Books的內容。 Tungsten Properties, Chemistry, Technology of the Element, Alloys, and Chemical Compounds], Springer Science & Business Media. 2012: pp. 167, (德文) 
  4. ^ Persson, Kristin. Materials Data on Te2W by Materials Project. LBNL Materials Project; Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). 2020. OSTI 1198898. doi:10.17188/1198898. 
  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. 627, doi:10.1016/S0021-9614(05)80034-5.
  6. ^ B. E. Brown: The crystal structures of WTe2 and high-temperature MoTe2. In: Acta Crystallographica. 20, 1966, S. 268, doi:10.1107/S0365110X66000513.
  7. ^ 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. 10013, doi:10.1038/srep10013.
  8. ^ Dale L. Perry, [《二碲化钨》在Google Books的內容。 Handbook of Inorganic Compounds, Second Edition], CRC Press. 2016: pp. 442, (德文) 
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二碲化钨
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