Remarkable solvent effects in the hydro- and solvothermal synthesis of copper-1,10-phenanthroline complexes

Poly[diaquo(1,10-phenanthroline-κ2N1:N10)(μ2-sulphato-κ2O:O′)copper(ii)]: hydrothermal synthesis, crystal structure and magnetic properties

Of late, hydrothermal synthesis has gained much interest in the synthesis of metal–organic hybrid complexes with fascinating architectures and topologies.

Di-μ-methacrylato-κO:O'-bis-[aqua-bis(1,10-phenanthroline-κN,N')copper(II)] dinitrate dihydrate

The title complex, [Cu₂(C₄H₅O₂)₂(C₁₂H₈N₂)₂(H₂O)₂](NO₃)₂·2H₂O, contains a dimeric [Cu₂(C₄H₅O₂)₂(C₁₂H₈N₂)₂(H₂O)₂]²⁺ dication with two five-coordinated Cu^II ions linked by two methacrylate ions in a syn–syn bridging arrangement. The dication possesses pseudo-twofold rotational symmetry. The penta­coordination of each Cu^II ion has a distorted square-pyramidal geometry, with two N donors from a phenanthroline ligand and two carboxyl­ate O atoms occupying basal sites and the apical position being occupied by a water mol­ecule. In the crystal packing, mol­ecules are linked to form a three-dimensional framework by O—H⋯O and C—H⋯O hydrogen bonds and π–π inter­actions [centroid–centroid distances of 3.6039 (15), 3.5301 (15), 3.6015 (15), 3.6496 (15) and 3.6858 (15) Å].