NEW ORGANOMETALLIC PALLADIUM(II) COMPLEXES CONTAINING P-BOOLEAN-AND-NLIGANDS SYNTHESIS, CHARACTERIZATION AND X-RAY STRUCTURE

New neutral organometallic palladium(II) complexes, [PdPhI(PNMe2)] (1) , [PdPhI(PC=NMe)] (2), [PdPhI(PC=NEt)] (3), and [PdMeCl(PNMe2)] (4), { PNMe2 means N,N-dimethyl2-(diphenylphosphanyl)aniline; PC=NMe means N- [2-(diphenylphosphanyl) benzylidene]-N-methylamine; PC=NEt means N-[2- (diphenylphosphanyl)benzylidene]-N-ethylamine} have been synthesized by oxidative addition of PhI to [Pd(dba)(2)] in the presence of the (P N)-N-boolean AND ligand (1-3), or by substitution reaction on [PdMeCl( COD)] with PNMe2 (4). Cationic sigma-organometallic species [PdR(PPh3) ((PN)-N-boolean AND)](+) are obtained upon treating complexes of the t ype [PdRX((PN)-N-boolean AND)] with PPh3 and AgCF3SO3 and consist pred ominantly of the trans-P,P isomer in CDC13 solution, as shown by NMR s pectroscopic studies. The cationic eta(3)-allyl complex [Pd(eta(3)-all )(PNMe2)]PF6 has also been prepared and characterized, both in solutio n and in the solid state. Compounds [PdPhI(PNMe2)] (P2(1)/n), [PdPhI(P C=NMe)] (P (1) over bar), [PdPhI(PC=NEt)] (P (1) over bar), and [Pd(et a(3)-all) (PNMe2)]PF6 (P (1) over bar) have been authenticated by X-ra y analysis.