Lanthanum iodide
Crystal structure | ||||||||||||||||
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__ La 3+ __ I - | ||||||||||||||||
General | ||||||||||||||||
Surname | Lanthanum iodide | |||||||||||||||
other names |
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Ratio formula | LaI 3 | |||||||||||||||
Brief description |
white hexagonal crystals, hygroscopic |
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properties | ||||||||||||||||
Molar mass | 519.62 g mol −1 | |||||||||||||||
Physical state |
firmly |
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density |
5.6 g cm −3 (20 ° C) |
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Melting point |
778 ° C |
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solubility |
soluble in water |
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safety instructions | ||||||||||||||||
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As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . |
Lanthanum (III) iodide (LaI 3 ) is a salt of the rare earth metal lanthanum with hydrogen iodide . It forms white hexagonal crystals that are hygroscopic . Lanthanum (III) iodide crystallizes in the orthorhombic crystal system in the space group Cmcm (space group no. 63) and the lattice constants a = 437 pm , b = 1401 pm and c = 1004 pm ( PuBr 3 type ).
Individual evidence
- ↑ a b c d David R. Lide (Ed.): CRC Handbook of Chemistry and Physics . 90th edition. (Internet version: 2010), CRC Press / Taylor and Francis, Boca Raton, FL, Properties of the Elements and Inorganic Compounds, pp. 4-69.
- ↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
- ^ LB Asprey, TK Keenan, FH Kruse: Preparation and Crystal Data for Lanthanide and Actinide Triiodides. In: Inorganic Chemistry , 3, 8, 1964, pp. 1137-1141, doi: 10.1021 / ic50018a015 .