Journal ArticleDOI
Investigation of exchange processes by two‐dimensional NMR spectroscopy
TLDR
In this paper, a general technique for the investigation of exchange processes in molecular systems is proposed and demonstrated and applications include the study of chemical exchange, of magnetization transfer by inter-and intramolecular relaxation in liquids, and of spin diffusion and cross-relaxation processes in solids.Abstract:
A new general technique for the investigation of exchange processes in molecular systems is proposed and demonstrated. Applications comprise the study of chemical exchange, of magnetization transfer by inter‐ and intramolecular relaxation in liquids, and of spin diffusion and cross‐relaxation processes in solids.read more
Citations
More filters
Journal ArticleDOI
A two-dimensional nuclear overhauser experiment with pure absorption phase in four quadrants☆
TL;DR: In this article, a method for obtaining pure absorption phase spectra in four quadrants in a two-dimensional nuclear magnetic resonance spin exchange experiment is described, which results in a substantial increase in resolution and discrimination while maintaining a signal-to-noise ratio comparable to that of the usual magnitude spectrum.
Journal ArticleDOI
A two-dimensional nuclear overhauser enhancement (2d noe) experiment for the elucidation of complete proton-proton cross-relaxation networks in biological macromolecules
TL;DR: The 2D NOE experiment has the principal advantage that it avoids detrimental effects arising from the limited selectivity of preirradiation in crowded spectral regions, and yields with a single instrument setting a complete network of NOE's between all the protons in the macromolecule.
Journal ArticleDOI
Practical aspects of two-dimensional transverse NOE spectroscopy
Ad Bax,Donald G. Davis +1 more
TL;DR: In this paper, the authors proposed a new method for measuring homonuclear NOE effects under spin-locked conditions, which they referred to as rotatingframe Overhauser enhancement spectroscopy (ROESY) since this name suggests a similarity with the closely related 2D NOESY experiment.
Journal ArticleDOI
Elucidation of cross relaxation in liquids by two-dimensional N.M.R. spectroscopy
Macura Slobodan,Richard R. Ernst +1 more
TL;DR: In this article, the influence of the correlation time of the molecular random process is investigated and it is found that in the limit of short correlation times (extreme narrowing limit) weak negative cross peaks are observed.
Journal ArticleDOI
13C NMR spectra of pentacyclic triterpenoids--a compilation and some salient features
Shashi B. Mahato,Asish P. Kundu +1 more
TL;DR: In this paper, a compilation of the 13C NMR data of a selected variety of naturally occurring pentacyclic triterpenoids, arranged skeletonwise, is provided.
References
More filters
Journal ArticleDOI
Two‐dimensional spectroscopy. Application to nuclear magnetic resonance
TL;DR: In this article, the possibilities for the extension of spectroscopy to two dimensions are discussed, including the elucidation of energy level diagrams, the observation of multiple quantum transitions, and the recording of high-resolution spectra in inhomogenous magnetic fields.
Journal ArticleDOI
Dissociation, Chemical Exchange, and the Proton Magnetic Resonance in Some Aqueous Electrolytes
H. S. Gutowsky,A. Saika +1 more
TL;DR: In this paper, a theoretical analysis of the relation between the magnetic absorption line shape and the chemical exchange frequency suggests that rather short chemical lifetimes can be measured; at least one can infer from the appearance of a single or complex resonance that the average lifetime is greater or less than a determinable value in a range about 10−2 to 10−4 sec.
Related Papers (5)
Coherence transfer by isotropic mixing: Application to proton correlation spectroscopy
MLEV-17-based two-dimensional homonuclear magnetization transfer spectroscopy
Ad Bax,Donald G. Davis +1 more