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]

Manganese(II) sulfide
Names
IUPAC name
Manganese(II) sulfide
Other names
Manganese sulfide
Manganese monosulfide
Alabandite
Identifiers
CAS Number
ECHA InfoCard 100.038.711
PubChem CID
UNII
CompTox Dashboard (EPA)
Properties
Chemical formula
 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]
Solubility in water
 0.0047 g/100 mL (18 °C)[2]
Structure
Crystal structure
 Halite (cubic), cF8
Space group
 Fm3m, No. 225
Coordination geometry
 Octahedral (Mn2+); octahedral (S2−)
Hazards
Main hazards Irritant
Related compounds
Other anions
 Manganese(II) oxide
Related manganese sulfides
 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).
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Infobox references

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
  1. http://www.espimetals.com/msds's/manganesesulfide.pdf
  2. Sicherheitsdatenblatt Alfa-Aesar
  3. WebElements Periodic Table of the Elements
  4. Mindat, http://www.mindat.org/min-42751.html
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