Tuning the hemilabile behaviour of a thioether–pyrazole ligand on Pd(II) complexes with diphosphines

Fluxional interconversion of divalent palladium complexes having NSNSN ligands between flexible SNS and rigid NNN-coordinated structures

“…[1][2][3][4][5][6][7] Palladium complexes that have bidentate or tridentate hybrid ligands containing nitrogen and sulfur atoms (SN, SNS or NSN ligands) have been well studied. Such work has focused on the behaviors of the complexes [8][9][10][11][12][13][14][15][16][17] as well as the influences of the ligand hemilability on fundamental reactions, such as insertion of unsaturated compounds into Pd-C bonds, [18][19][20][21][22][23][24] attack of nitrogen nucleophiles to η 3 -allyl complexes, [25][26][27][28] and catalytic reactions such as the Mizoroki-Heck reaction 29,30 and allylic substitution. 31 Structurally distinctive Pd-SNS complexes with macrocyclic architectures, [32][33][34][35] dendrimer 36,37 -or carborane 38 incorporated Pd-SNS complexes, as well as the Pd-SN complexes with cysteine-derived ligands 39 have been also reported.…”