Manganese(II) fluoride
Manganese(II) fluoride is the chemical compound composed of manganese and fluoride with the formula MnF2. It is a light pink solid, the light pink color being characteristic for manganese(II) compounds. It is made by treating manganese and diverse compounds of manganese(II) in hydrofluoric acid. Like some other metal difluorides, MnF2 crystallizes in the rutile structure, which features octahedral Mn centers.[3]
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| IUPAC name
Manganese(II) fluoride | |
| Identifiers | |
3D model (JSmol) |
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| ECHA InfoCard | 100.029.054 |
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| Properties | |
| MnF2 | |
| Molar mass | 92.934855 g/mol |
| Appearance | pale pink crystalline |
| Density | 3.98 g/cm3[1] |
| Melting point | 856 °C (1,573 °F; 1,129 K)[1] |
| Boiling point | 1,820 °C (3,310 °F; 2,090 K) |
| 1.02 g/100 ml | |
| +10,700·10−6 cm3/mol | |
| Hazards[2] | |
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| Warning | |
| H302, H312, H315, H319, H332, H335 | |
| P261, P264, P270, P271, P280, P301+P312, P302+P352, P304+P312, P304+P340, P305+P351+P338, P312, P321, P322, P330, P332+P313, P337+P313, P362, P363, P403+P233, P405, P501 | |
| Flash point | non-flammable |
| Related compounds | |
Other anions |
Manganese(II) chloride Manganese(II) bromide Manganese(II) iodide |
Other cations |
Technetium(VI) fluoride Rhenium(VII) fluoride Manganese(III) fluoride Manganese(IV) fluoride |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Uses
MnF2 is used in the manufacture of special kinds of glass and lasers.[4] It is a canonical example of uniaxial antiferromagnet (with Neel temperature of 68 K)[5] which has been experimentally studied since early on.[6]
References
- Maurice Griffel; J. W. Stout (1950). "Preparation of Single Crystals of Manganous Fluoride. The Crystal Structure from X-Ray Diffraction. The Melting Point and Density". Journal of the American Chemical Society. 72 (10): 4351–4353. doi:10.1021/ja01166a004.
- "339288 Manganese(II) fluoride 98%". Sigma-Aldrich. Retrieved 2008-06-18.
- Stout, J. W.; Reed, Stanley A. (1954). "The Crystal Structure of MnF2, FeF2, CoF2, NiF2 and ZnF2". J. Am. Chem. Soc. 76 (21): 5279–5281. doi:10.1021/ja01650a005.
- Ayres, D. C.; Hellier, Desmond (1997). Dictionary of Environmentally Important Chemicals. CRC Press. p. 195. ISBN 0-7514-0256-7. Retrieved 2008-06-18.
- Felcher, G. P; Kleb, R (20 November 1996). "Antiferromagnetic domains and the spin-flop transition of MnF 2". Europhysics Letters (EPL). 36 (6): 455–460. Bibcode:1996EL.....36..455F. doi:10.1209/epl/i1996-00251-7. S2CID 250849056.
- Stout, J. W.; Matarrese, L. M. (1 January 1953). "Magnetic Anisotropy of the Iron-Group Fluorides". Reviews of Modern Physics. 25 (1): 338–343. Bibcode:1953RvMP...25..338S. doi:10.1103/RevModPhys.25.338.
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