Germanium nitride

Germanium nitride

Names
IUPAC name Germanium(IV) nitride
Identifiers
CAS Number	12065-36-0
3D model (JSmol)	Interactive image
ChemSpider	17617086
ECHA InfoCard	100.031.864
PubChem CID	16684757
CompTox Dashboard (EPA)	DTXSID00923508
InChI 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
SMILES N#[Ge]N([Ge]#N)[Ge]#N
Properties
Chemical formula	Ge3N4
Molar mass	273.947 g/mol
Appearance	Colorless crystalline solid
Density	5.25 g/cm3
Boiling point	900 °C (1,650 °F; 1,170 K) (decomposes)
Related compounds
Other anions	Germanium phosphide
Other cations	Carbon nitride 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

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

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. doi:10.1016/C2009-0-30414-6. 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.