Publication

QUADRUPOLAR NUCLEI NMR USING RESIDUAL DIPOLAR COUPLINGS

Geoffrey Bodenhausen
2005
Patents

Abstract

Method for obtaining two-dimensional nuclear magnetic resonance spectrum of quadrupolar nuclei of nitrogen-14, involves recording signal of neighboring nucleus with specific spin after specific duration

Official source

https://infoscience.epfl.ch/entities/publication/82c2413c-33fc-47a0-8ba4-3d5227ed2f71

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Geoffrey Bodenhausen
2005
Patents

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/82c2413c-33fc-47a0-8ba4-3d5227ed2f71

About this result

Related concepts (9)

J-coupling

In nuclear chemistry and nuclear physics, J-couplings (also called spin-spin coupling or indirect dipole–dipole coupling) are mediated through chemical bonds connecting two spins. It is an indirect interaction between two nuclear spins that arises from hyperfine interactions between the nuclei and local electrons. In NMR spectroscopy, J-coupling contains information about relative bond distances and angles. Most importantly, J-coupling provides information on the connectivity of chemical bonds.

Nuclear magnetic resonance

Nuclear magnetic resonance (NMR) is a physical phenomenon in which nuclei in a strong constant magnetic field are perturbed by a weak oscillating magnetic field (in the near field) and respond by producing an electromagnetic signal with a frequency characteristic of the magnetic field at the nucleus. This process occurs near resonance, when the oscillation frequency matches the intrinsic frequency of the nuclei, which depends on the strength of the static magnetic field, the chemical environment, and the magnetic properties of the isotope involved; in practical applications with static magnetic fields up to ca.

Solid-state nuclear magnetic resonance

Solid-state NMR (ssNMR) spectroscopy is a technique for characterizing atomic level structure in solid materials e.g. powders, single crystals and amorphous samples and tissues using nuclear magnetic resonance (NMR) spectroscopy. The anisotropic part of many spin interactions are present in solid-state NMR, unlike in solution-state NMR where rapid tumbling motion averages out many of the spin interactions.

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f_1,\ldots,f_n

with

f_i:\mathcal{D}\mapsto \mathbb{R}

, finite-sum minimization seeks a point

{x}^\star \in \mathcal{D}

minimizing

\sum_{j=1}^nf_j(x)/n

. In this work, we propose a key twist into the finite-sum minimizat ...

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