(R/S)A2- or (R,S/S,R)p,p'-[Pd(kappa(2)-P,P-[P(OC6H3But2-2,4)2N(Me)C(O)N(Me)PPh(2)]Cl2]: chirality created by ring tilting.
The reaction of the unsymmetric bisphosphanyl urea ligand P(OC(6)H(3)Bu(t)(2)-2,4)(2)N(Me)C(O)N(Me)PPh(2) with [Pd(cod)Cl(2)] (cod = 1,5-cyclooctadiene) results in the chiral palladacycle (R,S)(A2)-[Pd(kappa(2)-P,P-[P(OC(6)H(3)Bu(t)(2)-2,4)(2)N(Me)C(O)N(Me)PPh(2)]Cl(2)]. The chirality of the title compound is caused by the tilting of the central, six-membered PdP(2)N(2)C ring along one of the two P-N vectors and comprises two chiral planes and one chiral axis.
Institut für Chemie und Biochemie, EMAU Greifswald, Soldmannstrasse 16, D-17487 Greifswald, Germany. kuhl@iapp.de
Olaf
O
Kühl
Steffen
S
Blaurock