Two organic-inorganic hybrid materials based on the penta-nuclear {MMn4} (MÂ =Â W and Mo) heterometallic clusters and Schiff-base ligands

► Two penta-nuclear {MMn4} heterometallic clusters are both tetrahedral structure. ► Compounds 1 and 2 are both based on four Mn-Salens. ► Compounds 1 and 2 both exhibit a 3D supramolecular porous framework.