Publication

The characterization of networks of coupled spins by coherence transfer in nuclear magnetic resonance

Geoffrey Bodenhausen
1986
Journal Articles

Abstract

A discussion with 8 refs. is given on the assignment of NMR spectra of complex systems, such as 1H or 13C spectra of macromols., which can be greatly facilitated by exploiting the phenomenon of coherence transfer. The topol. of the spin systems, i.e. the no. of spins and their connectivities through scalar or dipolar couplings, can be probed by suitably tailored sequences of radio-frequency pulses, and mapped by 2-dimensional Fourier transform methods. The interpretation of the resulting spectra can be facilitated by computer-aided pattern recognition methods. [on SciFinder (R)]

Official source

https://infoscience.epfl.ch/entities/publication/ee924256-346c-44b9-a045-6d1943a2959b

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Geoffrey Bodenhausen
1986
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/ee924256-346c-44b9-a045-6d1943a2959b

About this result

Related concepts (32)

Nuclear magnetic resonance spectroscopy

Nuclear magnetic resonance spectroscopy, most commonly known as NMR spectroscopy or magnetic resonance spectroscopy (MRS), is a spectroscopic technique to observe local magnetic fields around atomic nuclei. This spectroscopy is based on the measurement of absorption of electromagnetic radiations in the radio frequency region from roughly 4 to 900 MHz. Absorption of radio waves in the presence of magnetic field is accompanied by a special type of nuclear transition, and for this reason, such type of spectroscopy is known as Nuclear Magnetic Resonance Spectroscopy.

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.

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.

Related publications (6)

The characterization of networks of coupled spins by coherence transfer in nuclear magnetic resonance

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