Photoinduced Syntheses and Reactivities of Phosphorus-Containing Interelement Compounds

The photoinduced reactions of tetraphenyl­diphosphine disulfide with a range of organic dichalcogenides successfully afforded a series of phosphorus­(V)–chalcogen interelement compounds via a radical process. The relative reactivities of the organic dichalcogenides (i.e., (PhS)₂, (PhSe)₂, and (PhTe)₂) toward the P^III or P^V groups in the diphosphine analogues under light were investigated in detail, and a convenient method was developed to form P–S or P–Se interelement compounds from tetraphenyl­diphosphine disulfide and (PhS)₂ or (PhSe)₂ upon photoirradiation. Furthermore, the relative photochemical properties and reactivities of tetraphenyldiphophine (P–P interelement compound) and its analogues toward photoinduced radical addition reactions were also discussed. The formed P–E (E = S, Se) interelement compounds could be utilized for ionic reactions, and they could be transformed into various phosphine reagents via one-pot processes.