Tetrahydroxy-p-benzoquinone as a Source of Polydentate O-Donor Ligands. Synthesis, Crystal Structure, and Magnetic Properties of the [Cu(bpy)(dhmal)]2Dimer and the Two-Dimensional [SiW12O40Cu2(bpy)2(H2O)(ox)2]·16H2O Inorganic−Metalorganic Hybrid | Publicación