title: Constant time gradient HSQC-iDOSY: practical aspects.
abstract: An improved constant time gradient HSQC-iDOSY pulse sequence is presented, and the corresponding form of the Stejskal-Tanner equation is derived. The pulse sequence is particularly well suited to the problem of analysing mixtures of chemically cognate species, where the high spectral resolution afforded by 1H-13C correlation methods is needed for DOSY experiments to give good diffusion resolution. Its use is illustrated for a mixture of rutin and its aglycone quercetin.
authors.affiliation: School of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, UK.
authors.forename: A S
authors.initials: AS
authors.lastname: McLachlan
authors.forename: J J
authors.initials: JJ
authors.lastname: Richards
authors.forename: A R
authors.initials: AR
authors.lastname: Bilia
authors.forename: G A
authors.initials: GA
authors.lastname: Morris
mesh_terms: D002247:Carbon Isotopes; D004058:Diffusion; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D011522:Protons; D011794:Quercetin / Q000737:chemistry*; D012015:Reference Standards; D012431:Rutin / Q000737:chemistry*
chemical_list: D002247:Carbon Isotopes; D011522:Protons; D012431:Rutin; D011794:Quercetin