Cationic palladium(II), platinum(II) and ruthenium(II) complexes containing a chelating difluoro-substituted thiourea ligand

The fluorine substituted thiourea 2,6-F2C6H3C(O)NHC(S)NEt2 was prepared in good yield from the reaction of 2,6-F2C6H3C(O)Cl with KSCN and Et2NH in acetone. Using this compound several heteroleptic, monocationic Pd(II), Pt(II) and Ru(II) complexes of the type cis-[M{kappa S-2,O-2,6-F2C6H3C(O)NC(S)NEt2}(L)] PF6 [M = Pt, Pd; L = (Ph3P)(2), 'Bu(2)bipy, 1,10-phen] as well as [Ru(eta(6)-p-cym){kappa S-2,O-2.6-F2C6H3C(O)NC(S)-NEt2}(Ph-3)]PF6 were prepared in high yields. The compounds were characterised by spectroscopic methods and, in one case, by single crystal X-ray diffraction. (c) 2010 Elsevier Ltd. All rights reserved.