Bis(cinnamato-κO)(1,10-phenanthroline-κ²N,N′)copper(II)

The title mononuclear Cu^II complex, [Cu(C₉H₇O₂)₂(C₁₂H₈N₂)], is comprised of a Cu^II cation, two cinnamate (L⁻) ligands and a 1,10-phenanthroline (phen) ligand. The Cu^II atom and phen ligand lie on a twofold rotation axis. The Cu^II atom is coordinated by two O atoms from two carboxyl­ate 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.

catena-Poly[bis­(μ₃-2-phenyl­acetato-κ³O,O′:O)bis­(μ₂-2-phenyl­acetato-κ²O:O′)dicopper(II)(Cu—Cu)]

The title polymeric compound, [Cu₂(C₈H₇O₂)₄]_n, was synthesized by the reaction of copper acetate with aqueous phenyl­acetic acid. The unique Cu^II atom is coordinated by five O atoms from the carboxyl­ate groups of phenyl­acetate ligands, and the strongly distorted octa­hedral coordination environment is completed by a Cu—Cu bond of 2.581 (2) Å, at whose mid-point is located an inversion centre. The crystal structure consists of infinite polymeric linear chains of Cu²⁺ ions, running along [100], linked by bridging phenyl­acetate groups.

Tetra­kis(μ-2-phenyl­acetato-κ²O:O′)bis­{[4-(di­methyl­amino)­pyridine-κN¹]cobalt(II)}

The title compound, [Co₂(C₈H₇O₂)₄(C₇H₁₀N₂)₂], crystallizes as a centrosymmetric dimer containing two Co^II atoms bridged by four bidentate phenyl­acetate ligands in syn–syn bridging modes. Each Co^II atom is five-coordinated by four O atoms from four different carboxyl­ate ligands and the ring N atom of a 4-(di­methyl­amino)­pyridine unit, generating a distorted square-pyramidal geometry in which the four O atoms form the basal plane and the N atom occupies the axial position. In the crystal, C—H...O inter­actions link the dinuclear complex mol­ecules into a three-dimensional network.