Reactivity of the bis(silyl) palladium(II) complex toward organic isothiocyanates

Abstract

The bis(silyl) palladium(II) complex [Pd(SiHPh 2) 2(dmpe)] (dmpe = 1,2-bis(dimethylphosphino)ethane) reacted with organic isothiocyanates R–NCS (R = Ph, i Pr, allyl) to give a dithiocarbonimidato [Pd(S 2C N–Ph)(dmpe)] ( 1), a diphenylsilanedithiolato [Pd(S 2SiPh 2)(dmpe)] ( 2), or a π-allyl [( η 3-allyl)Pd](NCS) ( 3) palladium complex, depending on the isothiocyanate type and reaction conditions. In addition, various dithiocarbonimidato Pd(II) complexes were also obtained from trans-[PdEt 2L 2] (L = PMe 3, PMe 2Ph) ( 4– 6) or [Pd(styrene)L 2] and organic isothiocyanates.