Novel small organo-P-S/Se heterocycles

Chem Commun (Camb). 2001 Nov 7:(21):2288-9. doi: 10.1039/b107214e.

Abstract

Oxidative addition of elemental sulfur and selenium to cyclomonocarbatetraphosphines (PhP)4CR2 (R = H, Me) afforded novel five- and four-membered heterocycles PhP(E)CH2PhP(E)E2(E = S, Se) and PhP(Se)CMe2-PhP(Se)Se.