Three new 1D Cu(II) coordination polymers and a binuclear Cu(II) complex of two pyrazole derived Schiff base ligands: Heterocyclic ring substitution and anion dependent structural variations - Spectral studies

► Pyrazole derived tri/pentadentate Schiff base ligands. ► X-ray crystallographic analysis of Cu(II) complexes. ► UV-Vis, electrochemistry and emission behavior.