Synthesis and crystal structure of discrete complexes and coordination polymers containing 1,3-bis(pyrazol-1-yl)propane ligands

► Co2+, Ni2+, Cu2+ nitrates form discrete complexes with 1,3-bis(pyrazol-1-yl)propane. ► CuCl2·2H2O with 1,3-bis(pyrazol-1-yl)propane yields linear coordination polymer. ► Structures of Cu2+ and Ni2+ complexes were determined by X-ray crystallography.