Chemistry:Phosphoramide

Phosphoramide

Names
IUPAC name Phosphoric triamide
Other names Diaminophosphorylamine Phosphoric amide Phosphoryl triamide Triaminophosphine oxide
Identifiers
CAS Number	13597-72-3 Y
3D model (JSmol)	Interactive image
ChemSpider	109920
PubChem CID	123317
UNII	M27WLZ6CWP Y
InChI InChI=1S/H6N3OP/c1-5(2,3)4/h(H6,1,2,3,4) Key: DMSZORWOGDLWGN-UHFFFAOYSA-N InChI=1/H6N3OP/c1-5(2,3)4/h(H6,1,2,3,4) Key: DMSZORWOGDLWGN-UHFFFAOYAP
SMILES NP(=O)(N)N
Properties
Chemical formula	O=P(NH 2) 3
Molar mass	95.042 g·mol−1
Appearance	white solid
Solubility in water	good
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

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Phosphoramide is a chemical compound with the molecular formula O=P(NH
2)
3. It is a derivative of phosphoric acid in which each of the hydroxyl groups have been replaced with an amino group. In bulk, the compound is a white solid, soluble in polar solvents.

Chemical properties

Phosphoramide arises from the reaction of phosphoryl chloride with ammonia. In moist air, it hydrolyzes to an ammonium salt:

2 H
2O + O=P(NH
2)
3 → [NH
4]+
[PO
2(OH)(NH
2)]−
+ NH
3

It reacts with sodium hydroxide with loss of ammonia:

NaOH + O=P(NH
2)
3 → Na+
[PO
2(NH
2)
2]−
+ NH
3

The related thiophosphoryl triamide compound S=P(NH
2)
3 was made from the reaction of thiophosphoryl chloride with ammonia.

Phosphoramides

Phosphoramide is also the parent compound for a range of derivatives called phosphoramides. An example compound is the polar solvent hexamethylphosphoramide (HMPA).