Results 1 to 10 of about 2,861,082 (242)

Measurements of Nuclear Magnetic Shielding in Molecules [PDF]

open access: yesMolecules
The origin of nuclear magnetic shielding in diamagnetic molecules is discussed, pointing out various contributions to the shielding from electrons and the effects of intra- and intermolecular interactions.
Karol Jackowski, Marcin Wilczek
doaj   +5 more sources

Probing Nuclear Dipole Moments and Magnetic Shielding Constants through 3-Helium NMR Spectroscopy

open access: yesPhyschem, 2022
Multinuclear NMR studies of the gaseous mixtures that involve volatile compounds and 3He atoms are featured in this review. The precise analyses of 3He and other nuclei resonance frequencies show linear dependencies on gas density.
Włodzimierz Makulski
doaj   +3 more sources

Nuclear Dipole Moments and Shielding Constants of Light Nuclei Measured in Magnetic Fields

open access: yesMagnetochemistry, 2023
Nuclear magnetic resonance (NMR) is a branch of spectroscopy commonly used for identifying the chemical structure of various materials. One of the areas in which NMR provides accurate data is the determination of nuclear magnetic moments.
Włodzimierz Makulski   +2 more
doaj   +2 more sources

Spatial Contributions to 1H NMR Chemical Shifts of Free-Base Porphyrinoids

open access: yesChemistry, 2021
A recently developed methodology for calculating, analyzing, and visualizing nuclear magnetic shielding densities is used for studying spatial contributions including ring-current contributions to 1H nuclear magnetic resonance (NMR) chemical shifts of ...
Heike Fliegl   +3 more
doaj   +1 more source

Accurate determination of 6,7Li nuclear magnetic moments

open access: yesPhysics Letters B, 2023
We report an accurate determination of the nuclear magnetic dipole moments of 6,7Li from the measured ratio of the nuclear and the electron g-factors in atomic Li.
Krzysztof Pachucki   +2 more
doaj   +1 more source

Effects of the Hubbard potential on the NMR shielding and optoelectronic properties of BiMnVO5 compound

open access: yesScientific Reports, 2023
This study explores the nuclear magnetic shielding, chemical shifts, and the optoelectronic properties of the BiMnVO5 compound using the full-potential linearized augmented plane wave method within the generalized gradient approximation by employing the ...
H. A. Rahnamaye Aliabad   +5 more
doaj   +1 more source

Passive and active shielding against electromagnetic radiation [PDF]

open access: yesNuclear Technology and Radiation Protection, 2020
In nuclear physics experiments, it is very important to isolate the measured quantities from electromagnetic noise. Without this possibility, it is impossible to obtain usable experimental results since natural electromagnetic noise can be ...
Đekić Saša B.   +4 more
doaj   +1 more source

Experiment on determination of ethanol chemical shift and concentration of ethanol solution based on nuclear magnetic resonance instrument [PDF]

open access: yesE3S Web of Conferences, 2020
In this designing experiment, a nuclear magnetic resonance instrument was used to study the chemical shift properties of ethanol based on the principle of magnetic shielding effect.
Liang Xinyi
doaj   +1 more source

15N NMR Shifts of Eumelanin Building Blocks in Water: A Combined Quantum Mechanics/Statistical Mechanics Approach

open access: yesMolecules, 2020
Theoretical results for the magnetic shielding of protonated and unprotonated nitrogens of eumelanin building blocks including monomers, dimers, and tetramers in gas phase and water are presented. The magnetic property in water was determined by carrying
Leonardo Bruno Assis Oliveira   +2 more
doaj   +1 more source

Magnetic Aromaticity of Cycloporphyrin Nanorings

open access: yesChemistry, 2021
The ascertainment of magnetic aromaticity is not necessarily straightforward, especially for large and bent systems, such as the cycloporphyrin nanorings recently synthesized by the group of Anderson.
Alessandro Landi   +2 more
doaj   +1 more source

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