SINGLE AND MULTIPLE-SELECTIVE EXCITATION COMBINED WITH PULSED-FIELD GRADIENTS

Applications of selective, multiselective, and semiselective pulses wi th pulsed field gradients are described, The use of multiple-selective excitation and PFGs for coherence selection in the selective one-dime nsional experiments results in spectra devoid of artifacts and with re markable solvent suppression, Multiple-selective excitation is also em ployed in an experiment called Multigate, a variant of the well-known WATERGATE experiment, in order to achieve multiple solvent signal supp ression, Finally, new pulse sequences are shown for recording pure abs orption omega(1) semiselective PFG NOESY, ROESY, and TOCSY experiments , The merits and limitations of these experiments are discussed. (C) 1 996 Academic Press, Inc.