Recent work has revealed that metal-organic frameworks (MOFs) can also exhibit this multiferroicity. These materials are particularly interesting since their structures are often topologically similar to known oxide or mineral structures, which can help to provide a blueprint in the search for novel materials with desirable properties. For example, families of MOFs with the perovskite topology have been studied in an effort to mimic the functional properties of the perovskites themselves. Among the variety of interesting properties thats MOFs can exhibit, one of the most important is the opportunity to finely tune the magnetism. Here, we propose to follow up some measurements on C(NH2)3[Cu(HCO2)3], where the guanidinium cations (C(NH2)3+) sit in the pores of a framework of the Cu cations, which in turn are connected by formate bridges, in direct analogy with the perovskites ABO3.