Helically chiral Pd(ii) complexes containing intramolecular Pd⋯Pd metallophilicity as circularly polarized molecular phosphors

Abstract

Carbon-centred chirality of the pincer-type cyclometalated ligands is transferred to the helical chirality of dinuclear and tetranuclear Pd(II) arylacetylide complexes, and hence phosphorescence with quantum yields up to 50% and dissymmetry factors in the 10⁻³ scale from the metal–metal-to-ligand charge-transfer excited states has been recorded in diluted solutions.