title: Heterometallic 3d-4f polyoxometalates: still an incipient field.
abstract: Heterometallic 3d-4f polyoxometalates still remain as an almost unexplored class of polyoxoanions despite showing great potential in fields such as molecular magnetism. This Frontier reviews some of their synthetic, structural and magnetic features and gives a personal view on future research in this area.
authors.affiliation: Instituto de Ciencia Molecular (ICMol), Universidad de Valencia, Catedrático José Beltrán 2, 46980, Paterna, Valencia, Spain. santiago.reinoso@ehu.es
authors.forename: Santiago
authors.initials: S
authors.lastname: Reinoso