Meta-Atom Behavior in Clusters Revealing Large Spin Ground States.

ABSTRACT: The field of single molecule magnetism remains predicated on super- and double exchange mechanisms to engender large spin ground states. An alternative approach to achieving high-spin architectures involves synthesizing weak-field clusters featuring close M-M interactions to produce a single valence orbital manifold. Population of this orbital manifold in accordance with Hund's rules could potentially yield thermally persistent high-spin ground states under which the valence electrons remain coupled. We now demonstrate this effect with a reduced hexanuclear iron cluster that achieves an S = 19/2 (χ(M)T ≈ 53 cm(3) K/mol) ground state that persists to 300 K, representing the largest spin ground state persistent to room temperature reported to date. The reduced cluster displays single molecul

SUBMITTER: Hernandez Sanchez R 

PROVIDER: S-EPMC5572587 | biostudies-literature | 2015 Nov

REPOSITORIES: biostudies-literature