Experimental

R factor = 0.039; wR factor = 0.100; data-to-parameter ratio = 12.9. The title mononuclear CuII complex, [Cu(C9H7O2)2-(C12H8N2)], is comprised of a Cu II cation, two cinnamate (L) ligands and a 1,10-phenanthroline (phen) ligand. The CuII atom and phen ligand lie on a twofold rotation axis. The CuII atom is coordinated by two O atoms from two carboxyl-ate groups of two (L) ligands and two N atoms from one phen ligand, exhibiting a distorted square-planar geometry. In the crystal, molecules are assembled into supramolecular chains parallel to the c axis through weak C—H O hydrogen bonds involving the phen and cinnamate ligands. Related literature 1,10-Phenanthroline is of great interest in the field of supra-molecular chemistry as it can form C—H O or C—H N hydrogen bonds and – stacking interactions (Liu et al., 2004; Wang et al., 2003), which can effectively result in one-dimen-sional or two-dimensional networks