Two centrosymmetric dinuclear phenanthroline-copper(II) complexes with 3,5-dichloro-2-hy­droxy­benzoic acid and 5-chloro-2-hy­droxy­benzoic acid

The title compounds, bis­([mu]-3,5-dichloro-2-oxidobenzoato)-[kappa]³O¹,O²:O²;[kappa]³O²:O¹,O²-bis­[(3,5-dichloro-2-hy­droxy­benzoic acid-[kappa]O¹)(1,10-phenanthroline-[kappa]²N,N')copper(II)], [Cu₂(C₇H₂Cl₂O₃)₂(C₇H₄Cl₂O₃)₂(C₁₂H₈N₂)₂], (I), and bis­([mu]-5-chloro-2-oxidobenzoato)-[kappa]³O¹,O²:O¹;[kappa]³O¹:O¹,O²-bis­[(5-chloro-2-hy­droxy­benzoic acid-[kappa]O¹)(1,10-phenanthroline-[kappa]²N,N')copper(II)] ethanol monosolvate, [Cu₂(C₇H₃ClO₃)₂(C₇H₅ClO₃)₂(C₁₂H₈N₂)₂]·C₂H₆O, (II), contain centrosymmetric dinuclear complex mol­ecules in which Cu²⁺ cations are surrounded by a chelating 1,10-phenanthroline ligand, a chelating 3,5-dichloro-2-oxidoben­zoate or 5-chloro-2-oxidobenzoate an­ionic ligand and a monodentate 3,5-dichloro-2-hydroxybenzoic acid or 5-chloro-2-hy­droxybenzoic acid ligand. The chelating benzoate ligand also bridges to the other Cu²⁺ ion in the molecule, but the O atom involved in the bridge is different in the two complexes, being the phenolate O atom in (I) and a carboxylate O atom in (II). The bridge completes a 4+1+1 axially elongated tetragonal-bipy­ram­idal arrangement about each Cu²⁺ cation. The complex mol­ecules of both compounds are linked into one-dimensional supra­molecular chains through O-H...O hydrogen bonds.