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)−NR2. 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°.
Names | |
---|---|
Pronunciation | /ˈæzənaɪd/ |
IUPAC name
Azanide
| |
Other names
monoamide, amide ion, ammonia ion, amide, ammonide
| |
Identifiers | |
| |
3D model (JSmol)
|
|
ChEBI |
|
ChemSpider |
|
PubChem CID
|
|
CompTox Dashboard (EPA)
|
|
| |
| |
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
|
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]
Silver(I) amide (AgNH2) 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.