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The Journal of Chemical Physics, 1961
The NMR spectra of glycidaldehyde were measured at 40 and 60 Mc/sec. [Complex chemical formula] These complicated spectra of four interacting protons were analyzed by two methods: the ABKY approximation and the iterated ABCD solution. The various mathematical techniques developed should prove useful in the analyses of other complicated spin resonance ...
C. A. Reilly, J. D. Swalen
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The NMR spectra of glycidaldehyde were measured at 40 and 60 Mc/sec. [Complex chemical formula] These complicated spectra of four interacting protons were analyzed by two methods: the ABKY approximation and the iterated ABCD solution. The various mathematical techniques developed should prove useful in the analyses of other complicated spin resonance ...
C. A. Reilly, J. D. Swalen
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Chemistry of Heterocyclic Compounds, 1978
The 13C and 1H NMR spectra of 1-arylaziridines, 2-phenyl-1-arylaziridines, and 2-aryl-1-phenylaziridines were studied. The additive contributions of aziridinyl, 1-phenyl-2-aziridinyl, and 2-phenyl-1-aziridinyl substituents to the shielding of the aromatic protons were calculated.
�. �. Liepin'sh +3 more
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The 13C and 1H NMR spectra of 1-arylaziridines, 2-phenyl-1-arylaziridines, and 2-aryl-1-phenylaziridines were studied. The additive contributions of aziridinyl, 1-phenyl-2-aziridinyl, and 2-phenyl-1-aziridinyl substituents to the shielding of the aromatic protons were calculated.
�. �. Liepin'sh +3 more
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Chemistry of Natural Compounds, 1972
The NMR spectra of 12 coumestans in trifluoroacetic acid have been studied. The same features of the chemical shifts of the ring protons are found in the spectra of the coumestans as in the spectra of the coumarins.
L. L. Simonova +3 more
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The NMR spectra of 12 coumestans in trifluoroacetic acid have been studied. The same features of the chemical shifts of the ring protons are found in the spectra of the coumestans as in the spectra of the coumarins.
L. L. Simonova +3 more
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Bulletin of the Academy of Sciences of the USSR Division of Chemical Science, 1979
1. An assignment was made of the lines in the13C and1H NMR spectra of the diterpene alcohol lagochilin. 2. The spectral parameters were compared with the characteristic structural traits of lagochilin, which can be used to establish the structure, configuration, and conformation of diterpenes of the labdane series.
O. S. Chizhov +2 more
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1. An assignment was made of the lines in the13C and1H NMR spectra of the diterpene alcohol lagochilin. 2. The spectral parameters were compared with the characteristic structural traits of lagochilin, which can be used to establish the structure, configuration, and conformation of diterpenes of the labdane series.
O. S. Chizhov +2 more
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2023
https://www.nmrium.org/nmrium#?toc=https%3A%2F%2Fzenodo.org%2Frecords%2F10400547%2Ffiles%2FManuscript.json https://www.nmrium.org/nmrium#?toc=https%3A%2F%2Fzenodo.org%2Frecords%2F10400547%2Ffiles%2FSupporting_Info ...
Andrés Castillo, Julien Wist
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Andrés Castillo, Julien Wist
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1974
The definition and uses of band width and band shape were introduced in Chapter 1, Section IIE, and were illustrated briefly. However, full use of these two characteristics requires a much more extensive acquaintance with actual spectra. It is necessary to have a mental picture of the appearance of the various kinds of multiplets under different ratios
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The definition and uses of band width and band shape were introduced in Chapter 1, Section IIE, and were illustrated briefly. However, full use of these two characteristics requires a much more extensive acquaintance with actual spectra. It is necessary to have a mental picture of the appearance of the various kinds of multiplets under different ratios
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"Decoupled" Proton NMR Spectra
Journal of Magnetic Resonance, Series A, 1994Abstract High-resolution proton NMR spectra are recorded in a new form where all resonances are singlets at the chemical-shift frequencies, with no spin-spin splittings. These "decoupled" proton spectra are derived from two-dimensional J spectra after real Fourier transformation (without frequency discrimination in F1) so that each spin multiplet ...
M. Woodley, R. Freeman
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2022
This chapter details the features of nuclear magnetic resonance (NMR) spectra. It starts with the chemical shift of a nucleus carrying the difference between its resonance frequency and that of a reference standard. The resonance frequency of a magnetic nucleus is affected by its electronic environment and the presence of nearby magnetic nuclei.
Peter Atkins +2 more
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This chapter details the features of nuclear magnetic resonance (NMR) spectra. It starts with the chemical shift of a nucleus carrying the difference between its resonance frequency and that of a reference standard. The resonance frequency of a magnetic nucleus is affected by its electronic environment and the presence of nearby magnetic nuclei.
Peter Atkins +2 more
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Exact Classification of NMR Spectra from NMR Signals
ICASSP 2024 - 2024 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)Nuclear magnetic resonance (NMR) spectroscopy is routinely used to study the properties of matter. Therefore, different materials can be classified according to their NMR spectra. However, the NMR spectra cannot be observed directly, and only the NMR signal, which is a sum of complex exponentials, is directly observable in practice.
Pedro Izquierdo Lehmann +3 more
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1986
The theory of chemical shifts in proton NMR can be rationalised comprehensively, and correlation data are available in tabular form to aid spectral interpretation.
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The theory of chemical shifts in proton NMR can be rationalised comprehensively, and correlation data are available in tabular form to aid spectral interpretation.
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