Decanuclear {Cu I6Re V4} clusters utilizing cyanido and nitrido molecular bridges as efficient ligand-modulated luminophores

Abstract

The combination of cationic Cu(I)-(diphenyl-2-pyridylphosphine) complexes with tetracyanidonitrido-Re(V) anions is a synthetic route to strongly photoluminescent materials incorporating deca-nuclear {Cu^I₆Re^V₄} molecules, utilizing both cyanido and nitrido molecular bridges. These clusters are functionalized by pyridine-based ligands coordinating to Re(V) centers, which results in the enhancement and tuning of the emission and its distinct variation upon changes in excitation wavelength and temperature.