二碲化钨

二碲化钨
英文名	Tungsten(IV) telluride
别名	碲化钨(IV)
识别
CAS号	12067-76-4
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
密度	9.43 g/cm3，固体
熔点	972 °C（1245 K）（分解）
溶解性（水）	不溶
溶解性	不溶于氨，盐酸和硫酸，在硝酸里分解
结构
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。

二碲化钨是钨的碲化物，化学式 WTe₂。

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。^[5]

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

性质

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

二碲化钨可用于半导体工业。^[8]

参考资料

^ 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, [《二碲化钨》在Google Books的内容。 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, [《二碲化钨》在Google Books的内容。 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, [《二碲化钨》在Google Books的内容。 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, [《二碲化钨》在Google Books的内容。 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, [《二碲化钨》在Google Books的内容。 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, [《二碲化钨》在Google Books的内容。 Handbook of Inorganic Compounds, Second Edition], CRC Press. 2016: pp. 442,
ISBN 978-1-4398-1462-8
（德文）

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