Magneto-structural defects on a congested nanoscopic polyradical dendrimer Original Research Article

The new polychlorotriphenylmethyl tetraradical 1 has been obtained and its magnetic properties studied. The large overcrowding present in this dendritic radical has been shown not only to affect its synthesis but its magnetic properties. Even though steric hindrance is an extremely efficient tool to increase the persistence of high-spin species, it may lead to undesired steric congestions that disfavor the desired ferromagnetic coupling between meta connected radical units.