## A recently introduced density matrix picture for dipolar effects Alternatively, it is possible to write a density matrix treatin solution NMR (1996, J. Chem. Phys. 105, 874) gave complete ment which explicitly shows the origin of the cross peaks solutions for intermolecular multiple-quantum coh
Detection of Intermolecular Heteronuclear Multiple-Quantum Coherences in Solution NMR
β Scribed by Patricia R. Bachiller; Sangdoo Ahn; Warren S. Warren
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- English
- Weight
- 139 KB
- Volume
- 122
- Category
- Article
- ISSN
- 1064-1858
No coin nor oath required. For personal study only.
β¦ Synopsis
assuming that the sample begins at equilibrium. I and S are Over the past few years, we and others have shown that, the two different kinds of spins ( 1 H and 13 C in our experiin a wide variety of two-dimensional solution NMR experiments, respectively), and the indices i and j run up to the ments, samples with at least one concentrated component number of I and S spins in the sample. Note that (such as proteins in water) can grossly violate the predictions of conventional theory (1-16). They show cross peaks in the indirectly detected dimension with all of the experi-
COMMUNICATIONS Farmer II, Experimental NMR Conference, Boston, Massachusetts, do solvent-solvent peaks; for example, the zero-quantum
March 1995.
solvent-solute signal (r Γ 0, k Γ 1) does not vanish,
π SIMILAR VOLUMES
The behavior of intermolecular multiple-quantum coherences in a variety of simple liquids with different chemical and magnetic properties is investigated experimentally and modeled by numerical simulations based on modified Bloch equations. The effects of spin concentration, temperature, intramolecu
Intermolecular zero-quantum coherences (iZQC) induced by the dipolar demagnetizing field can give both P-and N-type cross peaks. This paper shows that the relative intensities of the two types of iZQC peaks follow a simple relation, tan 2 (/2), from both the quantum (spin density matrix) and classic
A fast, efficient numerical algorithm is used to study intermolecular zero-quantum coherences (iZQCs) and double-quantum coherences (iDQCs) in two applications where the three-dimensional structure of the magnetization is important: high-resolution NMR in inhomogeneous fields and contrast enhancemen
This is a trial to simplize sequences to get the relaxation function f 31 (t), which is usually detected by the double-or triple-quantum filtered (DQF or TQF) NMR in an isotropic phase. The results indicate that only two phase cycling is needed to get the f 31 (t) function, which shows the advantage