| Summary: | The title mononuclear CuII complex, [Cu(C8H5O3)2(C10H8N2)], is comprised of a CuII cation, two 4-formylbenzoate (L−) ligands and a 2,2′-bipyridine (bipy) ligand. The CuII ion and bipy ligand lie on a crystallographic twofold rotation axis; the CuII ion is coordinated by two N atoms from one bipy ligand and two O atoms from two different carboxylate groups of two L− ligands, exhibiting effectively a distorted square-planar geometry. The complex molecules are interlinked to generate two-dimensional supramolecular layers in the ab plane, formed by C—H...O hydrogen bonds, where the O acceptor is the O atom from the carboxylate group not involved in coordination to the CuII ion. The two-dimensional layers are stacked in a sequence via C—H...O hydrogen-bonding interactions where the formyl O atom acts as acceptor.
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