The reactions of triphenylphosphine and triphenylarsine with chloramine-T, sodium N-chlorotoluene-p-sulphonamide: crystal and molecular structure of triphenylphosphine oxide–toluene-p-sulphonamide (2/3)

Abstract

Triphenylphosphine and triphenylarsine react with chloramine-T, sodium N-chlorotoluene-p-sulphonamide, to yield products of composition C₅₇H₅₇N₃O₈S₃M₂[(1;M = P) and (2; M = As)] and constitution (Ph₃MO)₂(H₂NSO₂C₆H₄CH₃)₃. Crystals of (1) are trigonal, space group R3, with a= 18.648(2), c= 27.527(5)Å, and Z= 6. The structure was refined from diffractometer data to an R value of 0.033. The structure consists of hydrogen-bonded aggregates of (Ph₃PO)₂(H₂NSO₂C₆H₄CH₃)₃, having overall 3-fold rotational symmetry, in which three sulphonamide groups link two Ph₃PO molecules via O ⋯ H–N(R)–H ⋯ O hydrogen bonding (R = SO₂C₆H₄CH₃), with P–O distances of 1.490(3) and 1.494(3)Å and N ⋯ O distances of 2.946(3) and 2.957(3)Å. Crystals of (2) are isomorphous with (1), having a= 18.813(3), c= 27.356(6)Å.