COORDINATION CHEMISTRY OF SULFINES .1. SYNTHESIS AND CHARACTERIZATION OF THE COMPLEXES PT(PPH3)2(XYCSO) (X,Y=ARYL,S-ARYL,S-ALKYL,CL) - COORDINATION VIA THE C=S-PI-BOND

Reactions of Pt(PPh3)4 with the sulfines, XYCSO, (X, Y = aryl, S-aryl, S-alkyl, Cl) yield coordination compounds of the type Pt(PPh3)2(XYCSO). Infrared, 31P and 1H NMR spectra reveal that in all cases the sulfine ligand is coordinated side-on via the CS π-bond (Pt-η2-CS). Reactions of Pt(PPh3)4 with either the E- or Z-isomer of (p-CH3C6H4)(CH3S)CSO yields the corresponding E- or Z-coordination compound, Pt(PPh3)2[E-(p-CH3C6H4)(CH3S)CSO] or Pt(PPh3)2[Z-(p-CH3C6H4)(CH3S)CSO], indicating that the configuration of the sulfine ligand is retained upon coordination to the Pt(PPh3)2 unit. The compounds Pt(PPh3)2(XYCSO), containing reactive CX and/or CY bonds (X, Y = S-aryl, S-alkyl, Cl), undergo a rearrangement in solution to give complexes of the type PtX(PPh3)2(YCSO). © 1979.