Sodium nitride
| Crystal structure | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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| __ N 3− __ Na + | |||||||||||||
| General | |||||||||||||
| Surname | Sodium nitride | ||||||||||||
| other names |
Trisodium nitride |
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| Ratio formula | Na 3 N | ||||||||||||
| Brief description |
dark blue solid |
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| External identifiers / databases | |||||||||||||
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| properties | |||||||||||||
| Molar mass | 82.98 g mol −1 | ||||||||||||
| Physical state |
firmly |
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| density |
1.84 g cm −3 |
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| Melting point |
87 ° C (decomposition) |
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| safety instructions | |||||||||||||
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| As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . | |||||||||||||
Sodium nitride is an unstable inorganic chemical compound of sodium from the group of nitrides .
Extraction and presentation
Sodium nitride can be obtained by the thermal decomposition of sodium azide or the reaction of sodium azide with sodium.
It is also possible to produce it by reacting sodium with nitrogen in an electrical discharge.
A more recent synthesis describes the representation in a vacuum chamber in which atomic sodium is applied with nitrogen to a cooled sapphire substrate and then warmed to room temperature.
properties
Sodium nitride is a dark blue solid. It is extremely unstable and decomposes into its elements when heated slightly. Its crystal structure can be assigned to the anti- rhenium (VI) oxide type and is characterized by extremely low space filling.
Individual evidence
- ↑ a b c Ralf Steudel : Chemistry of non-metals: From structure and bond to application . Walter de Gruyter, 2008, ISBN 3-11-021128-9 , p. 310 ( limited preview in Google Book search).
- ↑ a b The periodic table online: Properties of sodium nitride
- ↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
- ↑ H. Wattenberg: About two modes of formation of sodium nitride and potassium nitride. In: Reports of the German Chemical Society (A and B Series). 63, 1930, pp. 1667-1672, doi : 10.1002 / cber.19300630708 .
- ↑ a b Rainer Niewa: Na 3 N - an original synthesis route for a long-sought binary nitride. In: Angewandte Chemie. 114, 2002, pp. 1777-1778, doi : 10.1002 / 1521-3757 (20020517) 114: 10 <1777 :: AID-ANGE1777> 3.0.CO; 2-Z .
- ↑ Peter Urben: Bretherick's Handbook of Reactive Chemical Hazards: 2-Volume Set . Academic Press, 2006, ISBN 0-08-052340-4 , pp. 1863 ( limited preview in Google Book search).