Indirect detection of the 183W and 57Fe nuclei using 119Sn‐relayed 1H,X correlation spectroscopy |
| |
Authors: | T Andrew Mobley Eleanor G Tennyson Grant S Hisao |
| |
Institution: | Grinnell College, 1116, 8th Avenue, Grinnell, IA 50112, USA |
| |
Abstract: | Recently reported triple‐resonance Y‐relayed 1H,X correlation experiments have been utilized to characterize 183W and 57Fe chemical shifts using 119Sn as the Y‐relaying nucleus instead of the previously used 31P. Application of an adaptation of Gudat's original INEPT/HMQC sequence results in a significant enhancement of the signal‐to‐noise (S/N) ratio for two‐dimensional 119Sn‐relayed 1H,183W and 1H, 57Fe correlation spectra with efficient detection of the transition metal nucleus in tungsten and iron complexes lacking an observable direct scalar coupling between the transition metal and any hydrogen nuclei. Strengths and shortcomings of the novel sequence and the original sequences reported by Gudat are discussed in the context of 119Sn‐relayed proton detection of very low frequency transition metal nuclei. Copyright © 2010 John Wiley & Sons, Ltd. |
| |
Keywords: | NMR 1H NMR 183W NMR 57Fe NMR 119Sn NMR indirect detection heteronuclear correlation spectroscopy two‐dimensional spectroscopy |
|
|