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| Properties | |
| Chemical formula | Cl4P2 |
| Molar mass | 203.75 g·mol |
| Appearance | colorless liquid |
| Melting point | −28 °C; −19 °F; 245 K |
| Boiling point | 180 °C; 356 °F; 453 K |
| Related compounds | |
| Other anions | Diphosphorus tetrafluoride Diphosphorus tetraiodide |
| Related compounds | Diphosphorus tetrafluoride Diphosphorus tetraiodide |
| Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). Infobox references | |
Diphosphorus tetrachloride is an inorganic compound with a chemical formula P2Cl4. It is a colorless liquid that decomposes near room temperature and ignites in air.
Production
It was first prepared in 1910 by Gauthier by the following reaction:
- 2 PCl3 + H2 → P2Cl4 + 2 HCl
An improved method involves coevaporation of phosphorus trichloride and copper, as described by the following:
- 2 PCl3 + 2 Cu → P2Cl4 + 2 CuCl
Reactions
Near room temperature, the compound degrades to give phosphorus trichloride and an ill-defined phosphorus monochloride:
- P2Cl4 → PCl3 + 1/n n
The compound adds to cyclohexene to give trans-C6H10-1,2-(PCl2)2.
References
- ^ Driess, M.; Haiber, G. (1993). "Eine neue Synthese von Tetrachlordiphosphan sowie Untersuchungen zur 1,2-Addition an Cycloalkene". Zeitschrift für Anorganische und Allgemeine Chemie. 619: 215–219. doi:10.1002/zaac.19936190135.
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