Synthesis and properties of dimethylpalladium complex with new PS3-type tripodal tetradentate ligand.

Dimethylpalladium complex bearing PS 3 -type tripodal tetradentate ligand, [PdMe 2 {P(C 6 H 4 -2-S- i -Pr) 3 }], was synthesized by the reaction of [PdCl{P(C 6 H 4 -2-S- i -Pr) 3 }]X (X = Cl, BF 4) with methyllithium (Br free). The dimethylpalladium complex reacted with an equimolar amounts of HCl to give the corresponding chloromethylpalladium complex, [PdClMe{P(C 6 H 4 -2-S- i -Pr) 3 }], while the similar reaction using 2 M amounts of HCl afforded the dichloropalladium complex, [PdCl{P(C 6 H 4 -2-S- i -Pr) 3 }]Cl. The detailed structures of the complexes were revealed by X-ray crystallography and variable temperature 1H NMR studies. Image 1 • [PdMe 2 (L)] (L: PS 3 -type tripodal tetradentate ligand) was synthesized. • Reaction of [PdMe 2 (L)] with HCl afforded [PdClMe(L)] or [PdCl 2 (L)] selectively. • The detailed structure of [PdMe 2 (L)] and [PdClMe(L)] was studied by X-ray analysis. • The dynamic behavior of [PdMe 2 (L)] and [PdClMe(L)] was studied by VT NMR. [ABSTRACT FROM AUTHOR]