Chemistry:Azanide
| |
| Names | |
|---|---|
| Pronunciation | /ˈæzənaɪd/ |
| IUPAC name
Azanide
| |
| Other names
monoamide, amide ion, ammonia ion, amide, ammonide
| |
| Identifiers | |
3D model (JSmol)
|
|
| ChEBI | |
| ChemSpider | |
PubChem CID
|
|
| |
| |
| Properties | |
| NH− 2 | |
| Molar mass | 16.023 g·mol−1 |
| Conjugate acid | Ammonia |
| Structure | |
| Bent | |
| Related compounds | |
Other anions
|
Phosphanide Arsinide Imide Nitride Nitridohydride |
Related isoelectronic
|
water, fluoronium |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
| Infobox references | |
Azanide is the IUPAC-sanctioned name for the anion NH−
2. The term is obscure; derivatives of NH−
2 are almost invariably referred to as amides,[1][2][3] despite the fact that amide also refers to the organic functional group –C(=O)–NR
2. The anion NH−
2 is the conjugate base of ammonia, so it is formed by the self-ionization of ammonia. It is produced by deprotonation of ammonia, usually with strong bases or an alkali metal. Azanide has a H–N–H bond angle of 104.5°.
Alkali metal derivatives
The alkali metal derivatives are best known, although usually referred to as alkali metal amides. Examples include lithium amide, sodium amide, and potassium amide. These salt-like solids are produced by treating liquid ammonia with strong bases or directly with the alkali metals (blue liquid ammonia solutions due to the solvated electron):[1][2][4]
- 2 M + 2 NH
3 → 2 MNH
2 + H
2, where M = Li, Na, K
Silver(I) amide (AgNH
2) is prepared similarly.[3]
Transition metal complexes of the amido ligand are often produced by salt metathesis reaction or by deprotonation of metal ammine complexes.
References
- ↑ 1.0 1.1 Bergstrom, F. W. (1940). "Sodium Amide". Organic Syntheses 20: 86. doi:10.15227/orgsyn.020.0086.
- ↑ 2.0 2.1 P. W. Schenk (1963). "Lithium amide". in G. Brauer. Handbook of Preparative Inorganic Chemistry, 2nd Ed.. 1. New York, NY: Academic Press. pp. 454.
- ↑ 3.0 3.1 O. Glemser, H. Sauer (1963). "Silver Amide". in G. Brauer. Handbook of Preparative Inorganic Chemistry. 1 (2nd ed.). New York, NY: Academic Press. pp. 1043.
- ↑ Greenlee, K. W.; Henne, A. L. (1946). "Sodium Amide". Inorganic Syntheses. Inorganic Syntheses. 2. pp. 128–135. doi:10.1002/9780470132333.ch38. ISBN 9780470132333.
 |  |
