Synthesis, characterization and magnetic properties of hollow microspheres with micro-mesoporous shells assembled from cobalt-based ferrocenyl coordination polymers

► Novel hollow magnetic microspheres are constructed with coordination polymers. ► Microspheres exhibit hierarchical porous structures. ► Microspheres show spin-canted antiferromagnetism with ferromagnetic ordering. ► Microspheres have the potential applications in drug delivery, catalysis, etc.