Thorium triiodide explained
Thorium triiodide is a binary inorganic compound of thorium metal and iodine with the chemical formula .[1] [2] [3]
Synthesis
Th metal is heated with in a vacuum at 800 °C.[4]
Physical properties
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.[5] 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).[6] The α-form has a pseudoorthorhombic crystal structure.
Chemical properties
reacts with water to form thorium tetraiodide and thorium metal.[4]
Notes and References
- Book: Yaws . Carl L. . The Yaws Handbook of Physical Properties for Hydrocarbons and Chemicals: Physical Properties for More Than 54,000 Organic and Inorganic Chemical Compounds, Coverage for C1 to C100 Organics and Ac to Zr Inorganics . 6 January 2015 . . 978-0-12-801146-1 . 802 . 3 April 2024 . en.
- Book: Brown . David . Canterford . J. H. . Colton . Ray . Halides of the Transition Elements: Halides of the lanthanides and actinides, by D. Brown . 1968 . . 978-0-470-10840-6 . 229 . 3 April 2024 . en.
- Book: Seaborg . Glenn T. . Modern Alchemy: Selected Papers Of Glenn T Seaborg . 20 May 1994 . World Scientific . 978-981-4502-99-3 . 21 . 3 April 2024 . en.
- Book: David . Lore Rose . Thorium: A Bibliography of Unclassified Literature . 1953 . Technical Information Service . 18 . 3 April 2024 . en.
- Book: Brauer . Georg . Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume 1 . 1975 . Ferdinand Enke . Stuttgart . 978-3-432-02328-1 . 1142 . 19 June 2025.
- Book: Morss . Lester R. . Edelstein . Norman M. . Fuger . J. . Lester R. . Norman M. . Jean . Morss . Edelstein . Fuger . The Chemistry of the Actinide and Transactinide Elements . 2006 . Springer . 978-94-007-0211-0 . 78 . 10.1007/1-4020-3598-5 . 19 June 2025.
