Heterobimetallic coordination networks based on metallaporphyrins bearing four pyridine N-oxide groups as coordinating sites

The combination of two metallaporphyrin based tectons bearing four pyridyl-N-oxide groups with HgBr2 or PbI2 complexes leads to the formation of 3-D heterobimetallic coordination networks which were characterised in the crystalline phase by X-ray diffraction on single crystals. Both lone pairs of the oxygen atom of the pyridyl-N-oxide group participate in either coordination to the metal centre or in establishment of H-bonds with protic solvents.