The crystal and molecular structure oftrans-Di(methylsulphito)bis-(triphenylphosphine)platinum(II)

Abstract

The crystal and molecular structure oftrans-di(methylsulphito)bis(triphenylphosphine)platinum(II), Pt(SO3Me)2 (PPh3)2, derived from the reaction of Pt(PPh3)2 (O2) with SO2 in MeOH and in the presence of sodium tetraphenylborate(III), has been determined from diffractometer data. The complex crystallizes in the space group P ¯1- (Ci 1) with one molecule in a unit cell of dimensionsa = 9.744(2) A,b = 10.062(3) A,c = 11.153(2) A;α = 68.59(2)°, β = 82.69(2)° andγ = 62.25(2)°. Leastsquares refinement has led to a value of the conventional R index (on F) of 0.031 for the 3308 reflections having F2>3σ(F0 2). The complex is a typical square-planar platinum(II) complex with the platinum atom lying on a crystallographically imposed centre of symmetry. The important structural parameters are Pt-P 2.369(1) A, Pt-S 2.308(1) A, and the oxygen atoms complete an approximate tetrahedron about the sulphur atoms with S-O 1.448(5) A and S-O(Me) 1.620(5) A.