Isomorphous Co-II and Mn-II materials of tetrazolate-5-carboxylate with an unprecedented self-penetrating net and distinct magnetic behaviours

Two isomorphous Co-II and Mn-II three-dimensional coordination polymers with tetrazolate-5-carboxylate as magnetic mediator exhibit an unprecedented 3,4-connected self-penetrating net topology; a combination of canted antiferromagnetism and metamagnetism was observed in the Co-II compound, whereas the Mn-II compound shows typical antiferromagnetic behaviors.