Beryllium nitride
| Names | |
|---|---|
| IUPAC name
Beryllium nitride | |
| Other names
triberyllium dinitride | |
| Identifiers | |
3D model (JSmol) |
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| ECHA InfoCard | 100.013.757 |
| EC Number |
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| UNII | |
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| Properties | |
| Be3N2 | |
| Molar mass | 55.051 g·mol−1 |
| Appearance | yellow or white powder |
| Density | 2.71 g/cm3 |
| Melting point | 2,200 °C (3,990 °F; 2,470 K) |
| Boiling point | 2,240 °C (4,060 °F; 2,510 K) (decomposes) |
| decomposes | |
| Solubility | decomposes in solutions of acid and base |
| Structure | |
| Cubic, cI80, SpaceGroup = Ia-3, No. 206 (α form) | |
| Hazards | |
| NIOSH (US health exposure limits): | |
PEL (Permissible) |
TWA 0.002 mg/m3 C 0.005 mg/m3 (30 minutes), with a maximum peak of 0.025 mg/m3 (as Be) |
REL (Recommended) |
Ca C 0.0005 mg/m3 (as Be) |
IDLH (Immediate danger) |
Ca [4 mg/m3 (as Be)] |
| Related compounds | |
Other cations |
Calcium nitride Magnesium nitride |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references | |
Beryllium nitride, Be3N2, is a nitride of beryllium. It can be prepared from the elements at high temperature (1100–1500 °C); unlike beryllium azide or BeN6, it decomposes in vacuum into beryllium and nitrogen. It is readily hydrolysed forming beryllium hydroxide and ammonia. It has two polymorphic forms cubic α-Be3N2 with a defect anti-fluorite structure, and hexagonal β-Be3N2. It reacts with silicon nitride, Si3N4 in a stream of ammonia at 1800–1900 °C to form BeSiN2.