Hemilability and nonrigidity in metal complexes of bidentate P,PS donor ligands

Dicarbonylruthenium(II) complexes of diphosphine ligands and their catalytic activity

“…The stereo-electronic properties of phosphines and their derivatives have aroused much interest in the recent time because of their reactivity, structural novelty and catalytic activity [1][2][3][4][5][6][7][8][9][10]. A deeper insight into the catalytic systems and the relationship between ligand properties and catalytic performance will give access to more catalysts via rational design of the ligands.…”

Chiral palladacycle promoted asymmetric synthesis of functionalized bis-phosphine monoxide ligand

“…In this spectrum, the characteristic NOE patterns within the orthometalated (R)-naphthylamine ring are clearly recorded. For example, the driving forces for Me (11) to assume the axial position, i.e., the H(8)-Me (11) (11), NMe(ax), NMe(eq) respectively. Signal (C) represent the NOE interaction between Me(11) and NMe(eq) while no interaction between Me(11) and NMe(ax) is observed.…”

Regioselectivity and memory effects in palladium catalyzed allylic alkylations with bidentate P^PS donor ligands

“…We have discussed the difficulty in predicting the bite angles of complexes of P^P]S donor ligands in a previous report [15]. Although, average bite angles for P^P ligands have been reported [37], P^P]S ligands do not necessarily follow the same trend as P^P ligands.…”

“…Previously [15], we studied hemilability and nonrigidity in a series of rhodium and palladium complexes of P^P]S donor ligands using variable temperature 1 H, 13 C, and 31 P NMR. We determined the barrier to hemilability was lowest for P^P]S donor ligands forming larger chelate rings.…”

“…These catalysts also display a regiochemical memory effect, and the hemilability and rigidity of the P^P]S ligands affect the reaction rate and the degree to which a memory effect is observed. [15] for some of these complexes. The P^P]S ligands were all bisdiphenylphosphine monosulfides as shown in Fig.…”