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Thorium triiodide
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Thorium triiodide
Thorium triiodide is a binary inorganic compound of thorium metal and iodine with the chemical formula ThI3.
Th metal is heated with ThI4 in a vacuum at 800 °C.
Thorium triiodide is a black, violet-tinged, usually poorly crystallized mass. Formed crystals exhibit strong dichroism from violet to olive green under the microscope and are birefringent. Above 550 °C, thorium(III) iodide decomposes to thorium(IV) iodide and thorium(II) iodide. β-thorium(III) iodide has an orthorhombic crystal structure with the space group Cccm (space group no. 66). The α-form has a pseudoorthorhombic crystal structure.
ThI3 reacts with water to form thorium tetraiodide and thorium metal.
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Thorium triiodide
Thorium triiodide is a binary inorganic compound of thorium metal and iodine with the chemical formula ThI3.
Th metal is heated with ThI4 in a vacuum at 800 °C.
Thorium triiodide is a black, violet-tinged, usually poorly crystallized mass. Formed crystals exhibit strong dichroism from violet to olive green under the microscope and are birefringent. Above 550 °C, thorium(III) iodide decomposes to thorium(IV) iodide and thorium(II) iodide. β-thorium(III) iodide has an orthorhombic crystal structure with the space group Cccm (space group no. 66). The α-form has a pseudoorthorhombic crystal structure.
ThI3 reacts with water to form thorium tetraiodide and thorium metal.
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