Bis(diethylamino)chlorophosphine is an organophosphorus compound with the formula (Et2N)2PCl (Et = ethyl).

This colorless liquid serves as a masked source of PCl2+.

The compound is prepared by treatment of phosphorus trichloride with diethylamine: Illustrative of its utility is the synthesis of 1,2-bis(dichlorophosphino)benzene.

The synthesis involves sequential lithiation of 1,2-dibromobenzene followed by treatment with (Et2N)2PCl:[1] Finally, the amino substituents are removed using hydrogen chloride: