Names | |
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IUPAC name
Europium(II) iodide
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Identifiers | |
3D model (JSmol)
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ChemSpider | |
ECHA InfoCard | 100.040.641 |
EC Number |
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PubChem CID
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CompTox Dashboard (EPA)
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Properties | |
EuI 2 | |
Molar mass | 405.77 g/mol |
Appearance | Tea yellow powder |
Melting point | 510 °C (950 °F; 783 K) |
Boiling point | 1,120 °C (2,050 °F; 1,390 K) |
Soluble in THF | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Europium(II) iodide is the iodide salt of divalent europium cation.
Europium(II) iodide can be prepared in a handful of ways, including:
Reduction of europium(III) iodide with hydrogen gas at 350 °C:[1]
Thermal decomposition of europium(III) iodide at 200 °C:[1]
Reaction of europium with mercury(II) iodide:[1]
Reaction of europium with ammonium iodide:[1]
Europium(II) iodide has several polymorphs.[2] It adopts a monoclinic crystal structure in space group P 21/c (no. 14).[3][4]
It also adopts an orthorhombic polymorph in space group Pbca (no. 61). This form is isostructural with strontium iodide.[5]
A third polymorph of europium(II) iodide is formed if it is prepared from europium and ammonium iodide at low temperatures (200 K) in liquid ammonia. This low-temperature phase is orthorhombic and in space group Pnma (no. 62). This is the same structure as modification IV of strontium iodide.[6]
Europium(II) | |||
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Europium(III) |
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Salts and covalent derivatives of the iodide ion | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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