Praseodymium(III) iodide is an inorganic salt, consisting of the rare-earth metal praseodymium and iodine, with the chemical formula PrI3. It forms green crystals.[4] It is soluble in water.[5]
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Other names
Praseodymium triiodide
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Identifiers | |
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3D model (JSmol)
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ChemSpider |
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ECHA InfoCard | 100.034.046 |
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PubChem CID
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CompTox Dashboard (EPA)
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Properties | |
PrI3 | |
Molar mass | 521.619 g/mol 683.75652 g/mol (nonahydrate) |
Appearance | hygroscopic green crystals |
Density | 5.8 g/cm3[1] |
Melting point | 738 °C (1,360 °F; 1,011 K)[1] |
Boiling point | 1,380 °C (2,520 °F; 1,650 K) |
213.9 g/100 mL[2] | |
Hazards | |
GHS labelling:[3] | |
Danger | |
H317, H360 | |
P203, P261, P272, P280, P302+P352, P318, P321, P333+P313, P362+P364, P405, P501 | |
Related compounds | |
Other anions
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Praseodymium(III) fluoride Praseodymium(III) chloride Praseodymium(III) bromide |
Other cations
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Cerium(III) iodide Neodymium(III) iodide |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references
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Praseodymium(III) iodide forms green crystals, which are soluble in water.[5] It forms orthorhombic crystals which are hygroscopic.[1] It crystallizes in the PuBr3 type[6][7] with space group Cmcm (No. 63) with a = 4.3281(6) Å, b = 14.003(6) Å and c = 9.988(3) Å.[8] It decomposes through an intermediate phase 2 PrI3·PrOI to a mixture of praseodymium oxyiodide and praseodymium oxide (5 PrOI·Pr2O3).[9]