title: Electromagnetic susceptibility anisotropy and its importance for paramagnetic NMR and optical spectroscopy in lanthanide coordination chemistry.
abstract: The importance of the directional dependence of magnetic susceptibility in magnetic resonance and of electric susceptibility in the optical spectroscopy of lanthanide coordination complexes is assessed. A body of more reliable shift, relaxation and optical emission data is emerging for well-defined isostructural series of complexes, allowing detailed comparative analyses to be undertaken. Such work is highlighting the limitations of the current NMR shift and relaxation theories, as well as emphasising the absence of a compelling theoretical framework to explain optical emission phenomena.
authors.affiliation: Chemistry Research Laboratory, University of Oxford, 12, Mansfield Road, Oxford, OX1 3TA, UK. stephen.faulkner@chem.ox.ac.uk.
authors.forename: Octavia A
authors.initials: OA
authors.lastname: Blackburn
authors.affiliation: Chemistry Research Laboratory, University of Oxford, 12, Mansfield Road, Oxford, OX1 3TA, UK. stephen.faulkner@chem.ox.ac.uk.
authors.forename: Robert M
authors.initials: RM
authors.lastname: Edkins
authors.affiliation: Chemistry Research Laboratory, University of Oxford, 12, Mansfield Road, Oxford, OX1 3TA, UK. stephen.faulkner@chem.ox.ac.uk.
authors.forename: Stephen
authors.initials: S
authors.lastname: Faulkner
authors.affiliation: Department of Chemistry, Durham University, South Road, Durham, DH1 3LE, UK. david.parker@dur.ac.uk.
authors.forename: Alan M
authors.initials: AM
authors.lastname: Kenwright
authors.affiliation: Department of Chemistry, Durham University, South Road, Durham, DH1 3LE, UK. david.parker@dur.ac.uk.
authors.forename: David
authors.initials: D
authors.lastname: Parker
authors.affiliation: Department of Chemistry, Durham University, South Road, Durham, DH1 3LE, UK. david.parker@dur.ac.uk.
authors.forename: Nicola J
authors.initials: NJ
authors.lastname: Rogers
authors.affiliation: Department of Chemistry, Durham University, South Road, Durham, DH1 3LE, UK. david.parker@dur.ac.uk.
authors.forename: Sergey
authors.initials: S
authors.lastname: Shuvaev