title: Full quadrupolar tensor determination by NMR using a micro-crystal spinning at the magic angle.
abstract: An implementation of rotor-synchronised Magic Angle Spinning (MAS) NMR is presented to determine the quadrupolar coupling tensor values from a single crystal study for half-integer quadrupolar nuclei. Using a microcoil based probehead for studying micro crystals with superior sensitivity, we successfully determine the full quadrupolar tensor of (23)Na using a micro crystal of dimensions 210 x 210 x 700 mum of NaNO(3) as a model system. A two step simulation procedure is used to obtain the orientation of the quadrupolar tensor information from the experimental spectra and is verified by XRD analysis.
authors.affiliation: Radboud University Nijmegen, Institute for Molecules and Materials, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands.
authors.forename: Suresh Kumar
authors.initials: SK
authors.lastname: Vasa
authors.forename: Ernst R H
authors.initials: ER
authors.lastname: van Eck
authors.forename: J W G
authors.initials: JW
authors.lastname: Janssen
authors.forename: Arno P M
authors.initials: AP
authors.lastname: Kentgens