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).
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|Molar mass||87.003 g/mol|
|Appearance||Red, green or brown powder|
|Melting point||1610 ˚C|
|0.0047 g/100 mL (18 °C)|
|Halite (cubic), cF8|
|Fm3m, No. 225|
|Octahedral (Mn2+); octahedral (S2−)|
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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2S + MnCl
2 → 2 NH
4Cl + MnS
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.