title: A Trigonal Prismatic Mononuclear Cobalt(II) Complex Showing Single-Molecule Magnet Behavior.
abstract: Single-molecule magnets (SMMs) with one transition-metal ion often rely on unusual geometry as a source of magnetically anisotropic ground state. Here we report a cobalt(II) cage complex with a trigonal prism geometry showing single ion magnet behavior with very high Orbach relaxation barrier of 152 cm(-1). This, to our knowledge, is the largest reported relaxation barrier for a cobalt-based mononuclear SMM. The trigonal prismatic coordination provided by the macrocyclic ligand gives intrinsically more stable molecular species than previously reported SMMs, thus making this type of cage complexes more amendable to possible functionalization that will boost their magnetic anisotropy even further.
authors.affiliation: †Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow 119991, Russia.
authors.forename: Valentin V
authors.initials: VV
authors.lastname: Novikov
authors.affiliation: †Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow 119991, Russia.
authors.forename: Alexander A
authors.initials: AA
authors.lastname: Pavlov
authors.affiliation: †Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow 119991, Russia.
authors.forename: Yulia V
authors.initials: YV
authors.lastname: Nelyubina
authors.affiliation: ‡School of Chemistry and Photon Science Institute, The University of Manchester, Manchester M13 9PL, United Kingdom.
authors.forename: Marie-Emmanuelle
authors.initials: ME
authors.lastname: Boulon
authors.affiliation: §Vernadskii Institute of General and Inorganic Chemistry, The National Academy of Sciences of Ukraine, Kyiv 03680, Ukraine.
authors.forename: Oleg A
authors.initials: OA
authors.lastname: Varzatskii
authors.affiliation: †Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow 119991, Russia.
authors.forename: Yan Z
authors.initials: YZ
authors.lastname: Voloshin
authors.affiliation: ‡School of Chemistry and Photon Science Institute, The University of Manchester, Manchester M13 9PL, United Kingdom.
authors.forename: Richard E P
authors.initials: RE
authors.lastname: Winpenny