Syntheses, structures and photoluminescent properties of a series of divalent nickel and cadmium complexes based on 3-carboxy-1-(4′-(2″-carboxy)biphenylmethyl)-2-oxidopyridinium and structurally different N-donor ligands

Ten new coordination compounds based on 3-carboxy-1-(4′-(2″-carboxy)biphenylmethyl)-2-oxidopyridinium and different N-donor ligands have been successfully synthesized, where their thermal and photoluminescent properties have been studied.