A new determination of the proton-to-deuteron ratio of magnetic moments

2005 ◽  
Vol 83 (4) ◽  
pp. 405-412 ◽  
Author(s):  
S G Karshenboim ◽  
V G Ivanov ◽  
Yu. I Neronov ◽  
B P Nikolaev ◽  
Yu. N Tolparov
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Nmr Spectroscopy ◽  
Magnetic Resonance ◽  
Atomic Hydrogen ◽  
Magnetic Moments ◽  
Molecular Gas ◽  
Present Value ◽  
Hydrogen Deuteride ◽  
Order Of Magnitude

Nuclear magnetic resonance (NMR) spectroscopy of hydrogen deuteride (HD) is an attractive tool for a determination of the proton-to-deuteron ratio of magnetic moments. Potentially, it may provide a result an order of magnitude more accurate than the present value based on the study of atomic hydrogen and deuterium. NMR spectroscopy does not deal with single molecules but with a molecular gas and here we study the pressure dependence of the results.PACS Nos.: 12.20Ds, 21.20Ky, 27.10+h, 31.30Gs, 76.60Cq, 82.56Hg

scholarly journals Determination of Biodiesel Content in Diesel Fuel by Time-Domain Nuclear Magnetic Resonance (TD-NMR) Spectroscopy

2017 ◽  
Vol 31 (5) ◽  
pp. 5120-5125 ◽  
Author(s):  
Grazielli da Rocha ◽  
Luiz Alberto Colnago ◽  
Tiago Bueno Moraes ◽  
Giuliano Fernandes Zagonel ◽  
Graciela Ines Bolzon de Muniz ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Nmr Spectroscopy ◽  
Magnetic Resonance ◽  
Diesel Fuel ◽  
Time Domain ◽  
Nuclear Magnetic

Studies on Kuwait Crudes. II. Structural Analysis of Asphalts and Their Fractions by Nuclear Magnetic Resonance

1979 ◽  
Vol 33 (4) ◽  
pp. 406-409
Author(s):  
Yusuf A. Al-Farkh ◽  
Nizar R. El-Rayyes ◽  
Farouk H. Al-Hajjar ◽  
Khairya A. Al-Zaid
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Structural Analysis ◽  
Magnetic Resonance ◽  
Excellent Agreement ◽  
Atomic Hydrogen ◽  
Adsorption Chromatography ◽  
Molecular Weights ◽  
Structural Formulae ◽  
Nuclear Magnetic

Nuclear magnetic resonance methods were used for the determination of average structural formulae and formula weights of the saturate, naphthene-aromatic, and polar-aromatic fractions separated from asphalts by elution adsorption chromatography. The average formula weights are compared to molecular weights, showing fair agreement in the majority of cases. The more polar fractions of one asphalt had molecular weights up to 4 times the formula weights, while the less polar fractions had molecular weights in excellent agreement with formula weights. The aromaticity, the degree of substitution, the nonaromatic carbon in naphthenic rings, and the atomic hydrogen/carbon ratio of the fractions were discussed.

Rapid determination of n-6 and n-3 fatty acid ratios in cereal grains and forages by 1H NMR spectroscopy

2016 ◽  
Vol 96 (5) ◽  
pp. 730-733 ◽  
Author(s):  
D. Prema ◽  
J. Jensen ◽  
J.L. Pilfold ◽  
T.D. Turner ◽  
K.K. Donkor ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Fatty Acid ◽  
Nmr Spectroscopy ◽  
Magnetic Resonance ◽  
1H Nmr Spectroscopy ◽  
Rapid Determination ◽  
Cereal Grains ◽  
Nmr Method ◽  
Hydroponically Grown

Herein we describe a new method to rapidly determine the n-6/n-3 fatty acid ratios in cereal grains and forages (hydroponically-grown cereal sprouts and haylage) using 1H nuclear magnetic resonance (NMR) spectroscopy. This NMR method was found to be consistent with more established but time-consuming gas chromatographic methods (R = 0.994).

Determination of Monocarbamate to Dicarbamate Ratios in Ethylenediamine Carbamates by NMR Spectroscopy

1982 ◽  
Vol 36 (3) ◽  
pp. 282-285 ◽  
Author(s):  
Arlen W. Frank
Keyword(s):  
Carbon Dioxide ◽  
Nuclear Magnetic Resonance ◽  
Nmr Spectroscopy ◽  
Magnetic Resonance ◽  
Carbon Disulfide ◽  
Carbonyl Sulfide ◽  
The Stability ◽  
Nuclear Magnetic

The dicarbamate content of the adducts of ethylenediamine with carbon dioxide, carbon disulfide, and carbonyl sulfide can be determined by nuclear magnetic resonance (NMR) spectroscopy. The effect of experimental variables on the dicarbamate content and the stability of the adducts are explored.

scholarly journals Determination of element–deuterium bond lengths in Zintl phase deuterides by 2H-NMR

2019 ◽  
Vol 21 (20) ◽  
pp. 10594-10602 ◽  
Author(s):  
Robin Guehne ◽  
Henry Auer ◽  
Holger Kohlmann ◽  
Jürgen Haase ◽  
Marko Bertmer
Keyword(s):  
Density Functional Theory ◽  
Nuclear Magnetic Resonance ◽  
Nmr Spectroscopy ◽  
Magnetic Resonance ◽  
Density Functional ◽  
2H Nmr ◽  
Zintl Phase ◽  
Functional Theory ◽  
Bond Lengths

The Zintl phase deuterides CaSiD4/3, SrSiD5/3, BaSiD2, SrGeD4/3, BaGeD5/3 and BaSnD4/3 were investigated by nuclear magnetic resonance (NMR) spectroscopy and density functional theory (DFT) calculations to reliably determine element–deuterium bond lengths.

Direct Method for the Determination of the Iodine Value of Biodiesel by Quantitative Nuclear Magnetic Resonance (q1H NMR) Spectroscopy

2015 ◽  
Vol 29 (12) ◽  
pp. 7956-7968 ◽  
Author(s):  
A. S. Sarpal ◽  
Samantha R. Silva ◽  
Paulo R. M. Silva ◽  
Thays V. Monteiro ◽  
Júlia Itacolomy ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Nmr Spectroscopy ◽  
Magnetic Resonance ◽  
Iodine Value ◽  
Direct Method ◽  
Quantitative Nuclear Magnetic Resonance ◽  
Nuclear Magnetic

DETERMINATION OF THE ABSOLUTE CONFIGURATION OF NEW PIPERIDIN-4-ONE DERIVATIVE FROM Pellacalyx saccardianus BY NOESY SPECTROSCOPY

2016 ◽  
Vol 78 (3-2) ◽  
Author(s):  
Salam Ahmed Abed ◽  
Hasnah Mohd Sirat
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Nmr Spectroscopy ◽  
Magnetic Resonance ◽  
Absolute Configuration ◽  
X Ray ◽  
X Ray Crystallography ◽  
The Absolute ◽  
Nuclear Overhauser ◽  
Nuclear Magnetic

A new alkaloid, pellacalyxin was isolated from the leaves of Pellacalyx saccardianus of Rhizophoraceae family. Pellacalyxin was analyzed using nuclear Overhauser spectroscopy (NOESY) nuclear magnetic resonance (NMR) technique to determine the absolute configuration. The analysis of absolute configuration of pellacalyxin was supported by X-ray crystallography. 1H-1H NOESY NMR spectroscopy exhibited that pellacalyxin possesses two chiral centers (3S) and (6R).

Sign in / Sign up

Export Citation Format

Share Document