Identifiers | |
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3D model (JSmol)
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ECHA InfoCard | 100.031.926 |
EC Number |
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CompTox Dashboard (EPA)
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Properties | |
ThC2 | |
Related compounds | |
Other anions
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Thorium disilicide |
Other cations
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Uranium dicarbide |
Related compounds
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Thorium carbide |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Thorium dicarbide is an inorganic compound with the chemical formula ThC2.
Thorium dicarbide can be produced by reacting metal thorium and graphite at 2000~2500 °C:[1]
Thorium dicarbide is a yellow crystalline solid that decomposes in water.[2] It ignites at 2773 °C and becomes superconducting at 9 K.[3] At room temperature it has a monoclinic crystal structure with the space group C2/c (space group no. 15). At temperatures between 1430 °C and 1480 °C it exists in a tetragonal phase and above that in a cubic crystal structure.[4]
Thorium dicarbide can be rapidly hydrolyzed in the air to generate thorium dioxide, hydrogen and hydrocarbons.[5] Its reaction rate is 10 times that of the corresponding uranium dicarbide.[6] It can also react with acids, such as sulfuric acid, to generate thorium(IV) sulfate.[7]