A hard molecular nanomagnet from confined paramagnetic 3d-4f spins inside a fullerene cage.

ABSTRACT: Reducing inter-spin distance can enhance magnetic interactions and allow for the realization of outstanding magnetic properties. However, achieving reduced distances is technically challenging. Here, we construct a 3d-4f metal cluster (Dy₂VN) inside a C₈₀ cage, affording a heretofore unseen metallofullerene containing both paramagnetic 3d and 4f metal ions. The significantly suppressed 3d-4f (Dy-V) distances, due to the unique cage confinement effect, were observed by crystallographic and theoretical analysis of Dy₂VN@I_h(7)-C₈₀. These reduced distances result in an enhanced magnetic coupling (J_{total, Dy-V} = 53.30 cm^-1; J_{total, Dy-Dy} = -6.25 cm^-1), leading to a high magnetic blocking temperatu

SUBMITTER: Huang C 

PROVIDER: S-EPMC10730828 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature