Manganese(II) sulfide
Manganese(II) sulfide is a chemical compound of manganese and sulfur. It occurs in nature as the mineral alabandite (isometric), rambergite (hexagonal), and recently found browneite (isometric, with sphalerite-type structure, extremely rare, known only from a meteorite).[4]
| Names | |
|---|---|
| IUPAC name Manganese(II) sulfide | |
| Other names | |
| Identifiers | |
| |
| ECHA InfoCard | 100.038.711 |
PubChem CID |
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| UNII |
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CompTox Dashboard (EPA) |
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| Properties | |
| MnS | |
| Molar mass | 87.003 g/mol |
| Appearance | Red, green or brown powder[1] |
| Density | 3.99 g/cm3[2] |
| Melting point | 1610 ˚C[3] |
| 0.0047 g/100 mL (18 °C)[2] | |
| Structure | |
| Halite (cubic), cF8 | |
| Fm3m, No. 225 | |
| Octahedral (Mn2+); octahedral (S2−) | |
| Hazards | |
| Occupational safety and health (OHS/OSH): | |
Main hazards | Irritant |
| Related compounds | |
Other anions | Manganese(II) oxide Manganese(II) selenide Manganese(II) telluride |
| Manganese disulfide | |
Related compounds | Chromium(II) sulfide Iron(II) sulfide |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) | |
Synthesis
Manganese(II) sulfide can be prepared by reacting a manganese(II) salt (such as manganese(II) chloride) with ammonium sulfide:
- (NH
4)
2S + MnCl
2 → 2 NH
4Cl + MnS
Properties
The crystal structure of manganese(II) sulfide is similar to that of sodium chloride.
The pink color of MnS likely results from poor coupling between the lowest energy unoccupied Mn orbitals, resulting in discrete states rather than a delocalized band. Thus the lowest energy band-to-band electronic transition requires very high energy (ultraviolet) photons.
See also
- Alabandite, cubic MnS.
- Manganese disulfide, MnS2, also known as Manganese(IV) Sulfide
- Manganese(II) sulfate, MnSO4
- Rambergite, hexagonal MnS.
References
- ^ http://www.espimetals.com/msds's/manganesesulfide.pdf[dead link]
- ^ a b Sicherheitsdatenblatt Alfa-Aesar[permanent dead link]
- ^ WebElements Periodic Table of the Elements
- ^ Mindat, http://www.mindat.org/min-42751.html