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Intramolecular hydrogen bonding analysis
The Journal of Chemical Physics, 2022The quasi-atomic orbital (QUAO) bonding analysis is used to study intramolecular hydrogen bonding (IMHB) in salicylic acid and an intermediate that is crucial to the synthesis of aspirin. The bonding analysis rigorously explores IMHB through directly accessing information that is intrinsic to the molecular wave function, thereby bypassing the need for ...
Taylor Harville, Mark S. Gordon
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Halogen bonding organocatalysis enhanced through intramolecular hydrogen bonds
Chemical Communications, 2022The Hydrogen Bond enhanced Halogen Bond (HBeXB) represents a new method to preorganize molecular structure and enhance catalytic activity. Here we show that a HBeXB organocatalyst exhibits enhanced activity over a strictly halogen bonding catalyst.
Asia Marie S. Riel +3 more
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Tetrahedron, 1970
Abstract The difference in frequencies (Δν) between the absorption of free and intramolecularly bonded NH groups has been given for (3- and 4-thiopyridinecarboxy) anilides, thiobenzamido-pyridines, and (2-thiopyridinecarboxy) anilides. The geometry of the 5-membered chelate ring of N-oxides of 2-acylaminopyridines; and S-oxides of thiobenzanilides, (
J. Mirek, B. Kawałek
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Abstract The difference in frequencies (Δν) between the absorption of free and intramolecularly bonded NH groups has been given for (3- and 4-thiopyridinecarboxy) anilides, thiobenzamido-pyridines, and (2-thiopyridinecarboxy) anilides. The geometry of the 5-membered chelate ring of N-oxides of 2-acylaminopyridines; and S-oxides of thiobenzanilides, (
J. Mirek, B. Kawałek
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Intramolecular hydrogen bonding in cardiolipin
Biochimica et Biophysica Acta (BBA) - Biomembranes, 1991Fourier transform infrared (FT-IR) spectroscopy was used to determine whether intramolecular hydrogen bonding between the C-OH and P-OH groups exists in beef heart cardiolipin (CL) or in hydrogenated beef heart cardiolipin (18:0-CL) as compared to the synthetic 2'-deoxy analogue of cardiolipin (16:0-dCL).
Hübner, Wigand +2 more
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1994
Intramolecular hydrogen bonds between different components of molecules stabilize conformation. They are among the most important interactions in small and in large biological molecules because they require particular molecular conformations to be formed, and when formed, they confer additional rotational stability to these conformations.
George A. Jeffrey, Wolfram Saenger
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Intramolecular hydrogen bonds between different components of molecules stabilize conformation. They are among the most important interactions in small and in large biological molecules because they require particular molecular conformations to be formed, and when formed, they confer additional rotational stability to these conformations.
George A. Jeffrey, Wolfram Saenger
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Intramolecular Hydrogen Bonding in Medicinal Chemistry
Journal of Medicinal Chemistry, 2010The formation of intramolecular hydrogen bonds has a very pronounced effect on molecular structure and properties. We study both aspects in detail with the aim of enabling a more rational use of this class of interactions in medicinal chemistry.
Bernd, Kuhn, Peter, Mohr, Martin, Stahl
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Intramolecular Hydrogen Bonding in Methyl Lactate
The Journal of Physical Chemistry A, 2015The intramolecular hydrogen bonding in methyl lactate was studied with Fourier transform infrared (FTIR) spectroscopy, intracavity laser photoacoustic spectroscopy, and cavity ring-down spectroscopy. Vapor phase spectra were recorded in the ΔvOH = 1-4 OH-stretching regions, and the observed OH-stretching transitions were compared with theoretical ...
Schrøder, Sidsel Dahl +5 more
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Journal of Physical Organic Chemistry, 1996
Measurements were made in CCl4 of the formation constant KHB of the 1:1 hydrogen-bonded complexes between the reference donor 4-fluorophenol and the intramolecular hydrogen-bonded systems I (one lone pair on heteroatom Y, one intramolecular hydrogen bond: 8-hydroxyquinaldine and 2-(2-hydroxyphenyl)benzoxazole); II: (two lone pairs, two intramolecular ...
Michel Berthelot +3 more
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Measurements were made in CCl4 of the formation constant KHB of the 1:1 hydrogen-bonded complexes between the reference donor 4-fluorophenol and the intramolecular hydrogen-bonded systems I (one lone pair on heteroatom Y, one intramolecular hydrogen bond: 8-hydroxyquinaldine and 2-(2-hydroxyphenyl)benzoxazole); II: (two lone pairs, two intramolecular ...
Michel Berthelot +3 more
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