Neodymium Sesquisulfide
   HOME

TheInfoList



Click Here for Items Related To - Neodymium Sesquisulfide
OR:
Neodymium Sesquisulfide on:   [Wikipedia]   [Google]   [Amazon]

Neodymium(III) sulfide is a inorganic chemical compound with the formula Nd2S3 composed of a two neodymium atoms in the +3 oxidation state and three
sulfur Sulfur (or sulphur in British English) is a chemical element with the symbol S and atomic number 16. It is abundant, multivalent and nonmetallic. Under normal conditions, sulfur atoms form cyclic octatomic molecules with a chemical formula ...
atoms in the +2 oxidation state. Like other rare earth sulfides, neodymium(III) sulfide is used as a high-performance inorganic pigment.


Preparation

Neodymium(III) sulfide can directly be produced by reacting neodymium with sulfur: : 2Nd + 3S → Nd2S3 It can also be produced by sulfidizing
neodymium oxide Neodymium(III) oxide or neodymium sesquioxide is the chemical compound composed of neodymium and oxygen with the formula Nd2O3. It forms very light grayish-blue hexagonal crystals. The rare-earth mixture didymium, previously believed to be an ele ...
with H2S at 1450 °C: : Nd2O3 + 3 H2S → Nd2S3 + 3 H2O


Properties

Neodymium(III) sulfide is (as γ-form) a light green solid. The compound comes in three forms. The α-form has an orthorhombic crystal structure, the β form has a
tetragonal crystal structure In crystallography, the tetragonal crystal system is one of the 7 crystal systems. Tetragonal crystal lattices result from stretching a cubic lattice along one of its lattice vectors, so that the cube becomes a rectangular prism with a square ...
, and the γ form has a
cubic crystal structure In crystallography, the cubic (or isometric) crystal system is a crystal system where the unit cell is in the shape of a cube. This is one of the most common and simplest shapes found in crystals and minerals. There are three main varieties of ...
. At 1650 °C in a vacuum, the γ compound decomposes to form neodymium monosulfide. Neodymium(III) sulfide has a high melting point and a lot of polymorphic forms which make it difficult to grow. When heated, neodymium sulfide can lose sulfur atoms and can form a range of compositions between Nd2S3 and Nd3S4. Neodymium(III) sulfide is an electrical insulator.


See also

* Neodymium *
Sulfur Sulfur (or sulphur in British English) is a chemical element with the symbol S and atomic number 16. It is abundant, multivalent and nonmetallic. Under normal conditions, sulfur atoms form cyclic octatomic molecules with a chemical formula ...
*
Lanthanide The lanthanide () or lanthanoid () series of chemical elements comprises the 15 metallic chemical elements with atomic numbers 57–71, from lanthanum through lutetium. These elements, along with the chemically similar elements scandium and yttr ...


References

{{Sulfides Neodymium(III) compounds Sesquisulfides