Praseodymium (III) iodide
Crystal structure | ||||||||||||||||
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__ Pr 3+ __ I - | ||||||||||||||||
Crystal system | ||||||||||||||||
General | ||||||||||||||||
Surname | Praseodymium (III) iodide | |||||||||||||||
other names |
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Ratio formula | PrI 3 | |||||||||||||||
Brief description |
orthorhombic crystals, hygroscopic |
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properties | ||||||||||||||||
Molar mass | 521.62 g mol −1 | |||||||||||||||
Physical state |
firmly |
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density |
~ 5.8 g cm −3 (20 ° C) |
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Melting point |
738 ° 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 . |
Praseodymium (III) iodide (PrI 3 ) is a salt of the rare earth metal praseodymium with hydrogen iodide . It forms orthorhombic crystals that are hygroscopic . It crystallizes in the PuBr 3 type ( space group Cmcm (space group no. 63) with a = 4.3281 (6) Å , b = 14.003 (6) Å and c = 9.988 (3) Å).
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. 4-84.
- ↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
- ↑ E. Warkentin, H. Bärnighausen: The crystal structure of praseodymium diiodide (modification V) . In: Journal of Inorganic and General Chemistry . tape 459 , no. 1 , 1979, p. 187-200 , doi : 10.1002 / zaac.19794590120 .