New phosphorus containing bis-sulfone ligands

Derivatives of bis-sulfone 1,3-bis{(p-tolyl)S[O.sub.2]}-5-fertbutylbenzene 1, containing P(III) and P(V) were obtained and characterized in solution by multinuclear NMR spectroscopy. For two of the compounds [([2,6-{(p-tolyl)S[O.sub.2]}.sub.2]4-t-Bu-[C.sub.6][H.sub.2]][PCl.sub.2] 2 and [[2,6-{(p-tolyl)S[O.sub.2]}.sub.2]4-t-Bu [C.sub.6][H.sub.2]]P(O)(H)OEt) 4 the crystal and molecular structures in solid state were also determined by single crystal X-ray diffraction. Keywords: bis-sulfone, phosphorus derivatives, dichlorophosphine