𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Selective heteronuclear chemical shift correlation without soft pulses

✍ Scribed by M. A. Delsuc; E. Guittet; J. Y. Lallemand


Publisher
John Wiley and Sons
Year
1985
Tongue
English
Weight
242 KB
Volume
23
Category
Article
ISSN
0749-1581

No coin nor oath required. For personal study only.

✦ Synopsis


Abstract

The elucidation of ^1^H‐^13^C connectivities is one of the most powerful NMR tools for the determination of unknown structures, and a new one‐dimensional correlation technique is presented, based on a modified INEPT sequence. Omission of the first two 180° refocusing pulses and randomization of the mixing delay realize addition of a ^13^C bearing the selected ^1^H. This technique avoids resorting to the acquisition time and data storage consuming two‐dimensional approaches, and does not require any selective pulse or decoupling.


📜 SIMILAR VOLUMES


Heteronuclear chemical shift correlation
✍ Vadim Zorin; Filip Ciesielski; David C. Griffin; Michael Rittig; Boyan B. Bonev 📂 Article 📅 2010 🏛 John Wiley and Sons 🌐 English ⚖ 408 KB

## Abstract Direct observation of __J__‐couplings remains a challenge in high‐resolution solid‐state NMR. In some cases, it is possible to use Lee–Goldburg (LG) homonuclear decoupling during rare spin observation in MAS NMR correlation spectroscopy of lipid membranes to obtain __J__‐resolved spectr

Repression of one-bond modulations in lo
✍ Andrew S. Zektzer; Boban K. John; Gary E. Martin 📂 Article 📅 1987 🏛 John Wiley and Sons 🌐 English ⚖ 487 KB 👁 1 views

A modified long-range heteronuclear chemical shift correlation pulse sequence which eliminates modulations of response intensity due to one-bond proton-carbon I'J(CH)] spin couplings is described. The 'decoupling' of one-bond modulation has been accomplished through the use of a bilinear rotational

Effects of misoptimization of the BIRD p
✍ Miguel Salazar; Luis R. Soltero; Andrew S. Zektzer; Gary E. Martin 📂 Article 📅 1989 🏛 John Wiley and Sons 🌐 English ⚖ 383 KB 👁 1 views

BIRD pulses have been shown to provide an effective means of decoupling ow-bond modulation of long-range response intensity. It is not possible to optimize the BIRD pulse effectively wben tbere is a range of one-bond coupling constants. To examine the effects of misoptimization of the fixed delays (