Germanium nitride

Germanium(IV) nitride is an inorganic compound with the chemical formula Ge3N4. It can be produced through the reaction of germanium and ammonia:[1]

3 Ge + 4 NH3 → Ge3N4 + 6 H2
Germanium nitride
Names
IUPAC name
Germanium(IV) nitride
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.031.864
  • InChI=1S/Ge3N4/c4-1-7(2-5)3-6
    Key: BIXHRBFZLLFBFL-UHFFFAOYSA-N
  • InChI=1/Ge3N4/c4-1-7(2-5)3-6
    Key: BIXHRBFZLLFBFL-UHFFFAOYAE
  • N#[Ge]N([Ge]#N)[Ge]#N
Properties
Ge3N4
Molar mass 273.947 g/mol
Appearance light brown powder
Density 5.25 g/cm3
Boiling point 900 °C (1,650 °F; 1,170 K) (decomposes)
Related compounds
Other anions
 Germanium phosphide
Other cations
 Silicon nitride
Gallium nitride
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Structure

In its pure state, germanium(IV) nitride is a colorless, inert solid that crystallizes in many polymorphs, of which the most stable is the trigonal β-form (space group P31c). In this structure, the germanium atoms are tetrahedrally coordinated while the nitrogen atoms are trigonal planar.[2] The γ-form, which forms under high pressure, has a spinel structure.[3]

References
  1. Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. ISBN 978-0-08-037941-8.
  2. Ruddlesden, S. N.; Popper, P. (1958). "On the crystal structure of the nitrides of silicon and germanium". Acta Crystallographica. 11 (7): 465–468. doi:10.1107/S0365110X58001304.
  3. McMillan, Paul F.; Deb, Sudip K.; Dong, Jian-Jung (2003). "High-pressure metastable phase transitions in ?-Ge3N4 studied by Raman spectroscopy". Journal of Raman Spectroscopy. 34 (7–8): 567–577. Bibcode:2003JRSp...34..567M. doi:10.1002/jrs.1007. ISSN 0377-0486.
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