Tetrakis(μ-2-methylbenzoato)bis[(2-methylbenzoic acid)copper(II)]

In the title centrosymmetric dinuclear compound, [Cu2(C8H7O2)4(C8H8O2)2], four o-toluate anions form a cage around two Cu atoms in a syn-syn configuration. Two more o-toluic acid molecules are apically bonded to the Cu atoms, which show a square-pyramidal coordination geometry. The acid H atoms are hydrogen bonded to the cage carboxyl O atoms [O...O = 2.660 (2) Å]. The molecular packing forms a puckered pseudo-hexagonal close-packed layer in the (h00) plane, with soft intermolecular H...H contacts (2.46-2.58 Å).