title: Uniform-sign cross-peak double-quantum-filtered correlation spectroscopy.
abstract: We detail the uniform-sign cross-peak double-quantum-filtered correlation spectroscopy (UC2QF COSY) experiment, a new through-bond correlation method for disordered solids. This experiment is a refocused version of the popular double-quantum-filtered correlation spectroscopy experiment in liquids. Its key feature is that it provides in-phase and doubly absorptive line shapes, which renders it robust for chemical shift correlation in solids. Both theory and experiment point to distinct advantages of this protocol, which are illustrated by several experiments under challenging conditions, including fast magic-angle spinning (30kHz), anisotropic molecular motion, and (13)C correlation spectroscopy at the natural abundance isotope level.
authors.affiliation: Department of Chemistry, University of California, Riverside, CA 92521, USA. Leonard.Mueller@ucr.edu
authors.forename: Leonard J
authors.initials: LJ
authors.lastname: Mueller
authors.forename: Douglas W
authors.initials: DW
authors.lastname: Elliott
authors.forename: Garett M
authors.initials: GM
authors.lastname: Leskowitz
authors.forename: Jochem
authors.initials: J
authors.lastname: Struppe
authors.forename: Ryan A
authors.initials: RA
authors.lastname: Olsen
authors.forename: Kee-Chan
authors.initials: KC
authors.lastname: Kim
authors.forename: Christopher A
authors.initials: CA
authors.lastname: Reed