Short-bite PSP-type ligands: coordination chemistry and ligand rearrangement reactions

Abstract

Sulphur-containing short-bite diphosphine ligands are widely overlooked despite their analogy to well-explored PCP-based ligands. This work investigates the impact of the monoatomic sulphur-based ligand backbone in nickel complexes [NiHal2(PSP)], PSP = Ph2PSPPh2, Hal = Br (1), I (2) as counterparts of related [NiHal2(PCP)] complexes. The highly flexible PSP ligand backbone has shown a postive effect in Kumada-Tamao-Corriu coupling reactions of sterically demanding substrates.