Compound: [PCl3O]

Owner Referee Record added Record modified CAS Registry MolBase ID MolBase status
Lauren Povey Mike Ward 19 Feb 2004 20:34 19 Feb 2004 20:54 [10025-87-3] 472 Accepted

Phosphoryl trichloride
Phosphoric trichloride
Phosphonyl trichloride
Phosphoric chloride
Phosphorus chloride oxide
Phosphoryl chloride
Trichlorophosphine oxide
Trichlorophosphorus oxide

Compound formula

Central atom Formula Structural formula Isomer label Charge Formula weight Specific rotation label Absolute rotation label
phosphorus (P) Cl3O1P1 [PCl3O] 0 153.332

Classification for P

This compound is regarded as a discrete molecular species.

Oxidation number MLXZ class Coordination number (CN) Donor set Total valence electron count VE configuration Magnetism Block
5 MX5 4 Cl3O1 10 p0 diamagnetic p

Contributed properties

Geometry about P Point group Distortion type Physical state Colour Melting point
liquid Colourless/white not given


Phosphoryl trichloride is the most important of the phosphorus oxohalides. It is a colourless, fuming liquid that is used both commercially and industrially. It is corrosive and an irritant.

Key references

  1. Housecroft, C.E.; Sharpe, A.G. in Inorganic Chemistry, (2001), Prentice Hall, page 330.

3D structure


Phosphoryl trichloride is made by the reaction between phosphorus trichloride with oxygen gas.


No reactions yet entered.

Other calculated properties

Element percentages

   Cl     69.37%
    O     10.43%
    P     20.20%

Isotope pattern

     152  100.00  __________________________________________________
     153    0.04  
     154   96.09  ________________________________________________
     155    0.04  
     156   30.84  _______________
     157    0.01  
     158    3.33  __
     159    0.00  
     160    0.01