Oxyhalides and Thiohalides
| Chemical formula | CAS number | EINECS number | Melting point | Boiling point | Density | Refractive index | Dipole moment |
|---|---|---|---|---|---|---|---|
| POF3 | ? | −39.1°C | −39.7°C | 0,003596 g/cm3 | ? | ? | |
| POCl3 | 233-046-7 | 1.2°C | 105.1°C | 1.675 g/cm3 | 1.461 | 2.54 D | |
| POBr3 | 232-177-7 | 56°C | 192°C | 2.82 g/cm3 | ? | ? | |
| POI3 | ? | ? | 53°C | – | ? | ? | ? |
| PSF3 | ? | −148.8°C | −52.2°C | 1.56 g/cm3(l) | 1.353 | ? | |
| PSCl3 | 223-622-6 | -35°C | 125°C | 1.668 g/cm3 | 1.555 | ? | |
| PSBr3 | ? | ? | 37.8°C | 212°C decomp | ? | ? | ? |
| PSI3 | ? | ? | 48°C | decomp | ? | ? | ? |
The oxyhalides may be prepared from the corresponding trihalides by reaction with organic peroxides or ozone: they are sometimes referred to as phosphoryl halides.
The thiohalides, also known as thiophosphoryl halides may be prepared from the trihalides by reaction with elemental sulfur in an inert solvent. The corresponding selenohalides are also known.
The oxyhalides and thiohalides are significantly more electrophilic than the corresponding phosphorus(III) species, and present a significant toxic hazard.
Read more about this topic: Phosphorus Halide