title: Strong direct exchange coupling and single-molecule magnetism in indigo-bridged lanthanide dimers.
abstract: The synthesis, structure and magnetic properties of the indigo-bridged dilanthanide complexes [{(η5-Cp*)2Ln}2(μ-ind)]n-with Ln = Gd or Dy and n = 0, 1 or 2 are described. The gadolinium complexes with n = 0 and 2 show typically weak exchange coupling, whereas the complex bridged by the radical [ind]3-ligand shows an unusually large coupling constant of J = -11 cm-1(-2J formalism). The dysprosium complexes with n = 0 and 1 are single-molecule magnets in zero applied field, whereas the complex with n = 2 does not show slow magnetic relaxation.
authors.affiliation: The University of Manchester, School of Chemistry, Oxford Road, Manchester, UK. Richard.Layfield@manchester.ac.uk.
authors.forename: Fu-Sheng
authors.identifier: http://orcid.org/0000-0001-7190-4160
authors.initials: FS
authors.lastname: Guo
authors.affiliation: The University of Manchester, School of Chemistry, Oxford Road, Manchester, UK. Richard.Layfield@manchester.ac.uk.
authors.forename: Richard A
authors.identifier: http://orcid.org/0000-0002-6020-0309
authors.initials: RA
authors.lastname: Layfield