5 years ago

H-bonding dependent phosphorescence in a mixed ligand copper(I) complex

H-bonding dependent phosphorescence in a mixed ligand copper(I) complex
The mixed ligand copper(I) derivative [Cu(PPh3)22-O,O″-lact)] (1) (lact = l-(+)-lactate) has been prepared and fully characterized. NMR studies indicated the occurrence of a fluxional behavior involving the lactate anion, in solution. The α-hydroxycarboxylate ligand is responsible for the generation of a catemeric O–H⋯O(CO) H-bonding network that strongly influences the photophysical properties of 1, in the solid state. Indeed, when irradiated with UV light the title compound shows a bright phosphorescence, which as suggested by DFT calculations is strictly related to the abovementioned H-bonding network.

Publisher URL: www.sciencedirect.com/science

DOI: S0277538717306861

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