CHLOROTRIS(P-METHYLSULFONYLPHENYL)TIN(IV)

The title compound, [SnCl(C7H7O2S)(3)], crystallizes in an unusual spa ce group for Ar3SnCl compounds, namely, Pna2(1). The structure has [-O =S(CH3)(O)C6H4(Ar)(2)Sn(Cl)-](n) polymer chains zigzagging along the s crew axis parallel to c, which are then closely packed to create a den se structure, unlike the open lattice found for the tert-butyl analogu e. The molecular unit has distorted C-s symmetry, with one aryl group forming the pseudo-mirror plane. The environment around the Sn atom is quasi-five-coordinate, compared with that found in either four-coordi nate monomeric Ph(3)SnCl or in five-coordinate Ph(3)SnCl.L.