Manganese(II) iodide
Manganese(II) iodide is the chemical compound composed of manganese and iodide with the formula MnI2. The anhydrous compound adopts the cadmium iodide crystal structure.[2] The pink tetrahydrate is known. Unlike MnX2(H2O)4, which are cis for X = Cl, Br, the iodides are trans in MnI2(H2O)4.[3]
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| Names | |
|---|---|
| IUPAC name
Manganese(II) iodide | |
| Identifiers | |
3D model (JSmol) |
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| ChemSpider | |
| ECHA InfoCard | 100.029.274 |
| EC Number |
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PubChem CID |
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| UNII | |
CompTox Dashboard (EPA) |
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| Properties | |
| MnI2 | |
| Molar mass | 308.747 g/mol |
| Appearance | pink crystalline |
| Density | 5.01 g/cm3 |
| Melting point | 701 °C (1,294 °F; 974 K) (anhydrous) 80 °C (tetrahydrate) |
| Boiling point | 1,033 °C (1,891 °F; 1,306 K) |
| soluble | |
| +14,400·10−6 cm3/mol | |
| Structure | |
| Rhombohedral, hP3, SpaceGroup = P-3m1, No. 164 | |
| octahedral | |
| Hazards[1] | |
| GHS labelling: | |
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| Danger | |
| H360 | |
| P201, P202, P281, P308+P313, P405, P501 | |
| NFPA 704 (fire diamond) | |
| Flash point | non-flammable |
| Related compounds | |
Other anions |
Manganese(II) fluoride Manganese(II) chloride Manganese(II) bromide |
Other cations |
Iron(II) iodide Cobalt(II) iodide |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references | |
It can be used as a pink pigment or as a source of the manganese ion or iodide ion. It is often used in the lighting industry.[4]
References
- "223646 Manganese(II) iodide 98%". Sigma-Aldrich. Retrieved 2011-08-05.
- Cable, J. W.; Wilkinson, M. K.; Wollan, E. O.; Koehler, W. C. (1962). "Neutron Diffraction Investigation of the Magnetic Order in MnI2". Phys. Rev. 125 (6): 1860–1864. doi:10.1103/PhysRev.125.1860.
- Moore, J. E.; Abola, J. E.; Butera, R. A. (1985). "Structure of Manganese(II) Iodide Tetrahydrate, MnI2.4H2O". Acta Crystallographica Section C Crystal Structure Communications. 41 (9): 1284–1286. doi:10.1107/S0108270185007466.
- Cepanec, Ivica (2004). Synthesis of Biaryls. Elseveir. p. 104. ISBN 0-08-044412-1. Retrieved 2008-06-18.
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