Isotropic mixing, sign discrimination, and sensitivity in solid-state wideline heteronuclear correlation experiments

A variant of the solid-state wideline heteronuclear NMR correlation experim ent is described which overcomes some of the drawbacks associated with the routine experiment. The modified experiment results in spectra which are si gn-discriminated in the omega(1) dimension, but without the loss in sensiti vity expected for a standard hypercomplex implementation. In favorable case s sensitivity enhancements over comparable routine experiments are obtained . As well as these advantages, the method retains the selectivity of modifi ed WISE experiments proposed previously which give spectra containing corre lations between directly bonded nuclei only. (C) 1999 Academic Press.