article Crystal structure Crystallography, X-Ray X ray diffraction unclassified drug Copper Halogen bonds Models, Molecular X ray crystallography drug structure nuclear magnetic resonance Alkoxy-substituted benzoic acids Benzoic acid Catalytic oxidation Crystalline materials Crystalline structure Diphosphates EPR Interchain interactions Molecular Structure Parallel arrangement Rationalization of packing modes Single crystals Van der Waals forces chemical structure chemistry controlled study copper magnetism priority journal