Diphosphorus tetrachloride
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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
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Reactions
Near room temperature, the compound degrades to give phosphorus trichloride and an ill-defined phosphorus monochloride:
- P2Cl4 → PCl3 + 1/n [PCl]n
The compound adds to cyclohexene to give trans-C6H10-1,2-(PCl2)2.