二碲化鎢

二碲化鎢
英文名	Tungsten(IV) telluride
別名	碲化鎢(IV)
識別
CAS號	12067-76-4
PubChem	82913
SMILES	[Te]=[W]=[Te];
InChI	1S/2Te.W;
InChIKey	WFGOJOJMWHVMAP-UHFFFAOYSA-N
EINECS	235-086-0
性質
化學式	WTe2
莫耳質量	439.04 g·mol⁻¹
外觀	灰色晶體
密度	9.43 g/cm3，固體
熔點	972 °C（1245 K）（分解）
溶解性（水）	不溶
溶解性	不溶於氨，鹽酸和硫酸，在硝酸里分解
結構
晶體結構	正交晶系，oP12
空間群	Pmn21, No. 31
晶格常數	a = 3.50 Å, b = 6.34 Å, c = 15.4 Å
	若非註明，所有數據均出自標準狀態（25 ℃，100 kPa）下。

二碲化鎢是鎢的碲化物，化學式 WTe₂。

製備

二碲化鎢可以由鎢和碲在 800 °C 的真空下直接反應而成。^[5]

\mathrm {W+2\ Te\longrightarrow WTe_{2}}

性質

二碲化鎢是一種灰色固體，^[2]不溶於水。在 650 °C 時，二碲化鎢會和氧氣反應，600 °C時在真空中分解。^[3]它是正交晶系的，空間群 Pmn2₁ (No. 31)。^[6] 它有著層狀結構。^[7]

用處

二碲化鎢可用於半導體工業。^[8]

參考資料

^ Lide, David R. Handbook of Chemistry and Physics 87. Boca Raton, Florida: CRC Press. 1998: 4–92. ISBN 0-8493-0594-2.
^ ^2.0 ^2.1 William M. Haynes, [《二碲化鎢》在Google Books的內容。 CRC Handbook of Chemistry and Physics, 94th Edition], CRC Press. 2016: pp. 97,
ISBN 978-1-4665-7115-0
（德文）
^ ^3.0 ^3.1 ^3.2 ^3.3 Erik Lassner, Wolf-Dieter Schubert, [《二碲化鎢》在Google Books的內容。 Tungsten Properties, Chemistry, Technology of the Element, Alloys, and Chemical Compounds], Springer Science & Business Media. 2012: pp. 167,
ISBN 978-1-4615-4907-9
（德文）
^ 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.
^ 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.
^ B. E. Brown: The crystal structures of WTe2 and high-temperature MoTe2. In: Acta Crystallographica. 20, 1966, S. 268, doi:10.1107/S0365110X66000513.
^ 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.
^ Dale L. Perry, [《二碲化鎢》在Google Books的內容。 Handbook of Inorganic Compounds, Second Edition], CRC Press. 2016: pp. 442,
ISBN 978-1-4398-1462-8
（德文）

[hand-1] Lide, David R. Handbook of Chemistry and Physics 87. Boca Raton, Florida: CRC Press. 1998: 4–92. ISBN 0-8493-0594-2.

[William_M._Haynes-2] 2.0 ^2.1 William M. Haynes, [《二碲化鎢》在Google Books的內容。 CRC Handbook of Chemistry and Physics, 94th Edition], CRC Press. 2016: pp. 97,
ISBN 978-1-4665-7115-0
（德文）

[Erik_Lassner,_Wolf-Dieter_Schubert-3] 3.0 ^3.1 ^3.2 ^3.3 Erik Lassner, Wolf-Dieter Schubert, [《二碲化鎢》在Google Books的內容。 Tungsten Properties, Chemistry, Technology of the Element, Alloys, and Chemical Compounds], Springer Science & Business Media. 2012: pp. 167,
ISBN 978-1-4615-4907-9
（德文）

[MaterialsProject_WTe2-4] 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.

[DOI10.1016/S0021-9614(05)80034-5-5] 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.

[DOI10.1107/S0365110X66000513-6] B. E. Brown: The crystal structures of WTe2 and high-temperature MoTe2. In: Acta Crystallographica. 20, 1966, S. 268, doi:10.1107/S0365110X66000513.

[DOI10.1038/srep10013-7] 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.

[Dale_L._Perry-8] Dale L. Perry, [《二碲化鎢》在Google Books的內容。 Handbook of Inorganic Compounds, Second Edition], CRC Press. 2016: pp. 442,
ISBN 978-1-4398-1462-8
（德文）

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