title: High-resolution zero-field NMR J-spectroscopy of aromatic compounds.
abstract: We report the acquisition and interpretation of nuclear magnetic resonance (NMR) J-spectra at zero magnetic field for a series of benzene derivatives, demonstrating the analytical capabilities of zero-field NMR. The zeroth-order spectral patterns do not overlap, which allows for straightforward determination of the spin interactions of substituent functional groups. Higher-order effects cause additional line splittings, revealing additional molecular information. We demonstrate resonance linewidths as narrow as 11 mHz, permitting resolution of minute frequency differences and precise determination of long-range J-couplings. The measurement of J-couplings with the high precision offered by zero-field NMR may allow further refinements in the determination of molecular structure and conformation.
authors: Department of Chemistry, University of California at Berkeley, Berkeley, California 94720-3220, United States. jwblanchard@berkeley.edu
authors: John W
authors: JW
authors: Blanchard
authors: Micah P
authors: MP
authors: Ledbetter
authors: Thomas
authors: T
authors: Theis
authors: Mark C
authors: MC
authors: Butler
authors: Dmitry
authors: D
authors: Budker
authors: Alexander
authors: A
authors: Pines
mesh_terms: D001555:Benzene Derivatives / Q000737:chemistry*; D060526:Magnetic Fields; D009682:Magnetic Resonance Spectroscopy; D012015:Reference Standards
chemical_list: D001555:Benzene Derivatives