Hydrogen bonding. 47. Characterization of the ethylene glycol–heptane partition system: Hydrogen bond acidity and basicity of peptides

1999 ◽  
Vol 88 (2) ◽  
pp. 241-247 ◽  
Author(s):  
Michael H. Abraham ◽  
Filomena Martins ◽  
Robert C. Mitchell ◽  
Colin J. Salter
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonding ◽  
Ethylene Glycol ◽  
Partition System ◽  
Acidity And Basicity ◽  
Hydrogen Bond Acidity

Hydrogen-bonding. Part 11. A quantitative evaluation of the hydrogen-bond acidity of imides as solutes

1990 ◽  
Vol 55 (7) ◽  
pp. 2227-2229 ◽  
Author(s):  
Michael H. Abraham ◽  
Priscilla L. Grellier ◽  
David V. Prior ◽  
Jeffrey J. Morris ◽  
Peter J. Taylor ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonding ◽  
Quantitative Evaluation ◽  
Hydrogen Bond Acidity

scholarly journals Hydrogen-Bond-Promoted Metal-Free Hydroamination of Alkynes

Synlett ◽  
2019 ◽  
Vol 30 (18) ◽  
pp. 2086-2090
Author(s):  
Janet Bahri ◽  
Nour Tanbouza ◽  
Thierry Ollevier ◽  
Marc Taillefer ◽  
Florian Monnier
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonding ◽  
Ethylene Glycol ◽  
Proton Exchange ◽  
Secondary Amines ◽  
Metal Free ◽  
Original Metal

An original metal-free regio- and stereoselective intermolecular hydroamination of alkynes is described. Various (E)-enamines were obtained from arylacetylenes and aliphatic secondary amines in the presence of ethylene glycol as a solvent. The latter is assumed to play a major role in the mechanism through hydrogen bonding and proton exchange.

scholarly journals Dipolarity, Hydrogen-Bond Basicity and Hydrogen-Bond Acidity of Aqueous Poly(ethylene glycol) Solutions.

2002 ◽  
Vol 18 (12) ◽  
pp. 1357-1360 ◽  
Author(s):  
In-Whan KIM ◽  
Myung Duk JANG ◽  
Young Kyun RYU ◽  
Eun Hee CHO ◽  
Young Kyu LEE ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Ethylene Glycol ◽  
Poly Ethylene Glycol ◽  
Hydrogen Bond Basicity ◽  
Poly Ethylene ◽  
Hydrogen Bond Acidity

scholarly journals Theoretical Scales of Hydrogen Bond Acidity and Basicity for Application in QSAR/QSPR Studies and Drug Design. Partitioning of Aliphatic Compounds.

ChemInform ◽  
2004 ◽  
Vol 35 (31) ◽  
Author(s):  
Alexander A. Oliferenko ◽  
Polina V. Oliferenko ◽  
Jonathan G. Huddleston ◽  
Robin D. Rogers ◽  
Vladimir A. Palyulin ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Drug Design ◽  
Aliphatic Compounds ◽  
Acidity And Basicity ◽  
Hydrogen Bond Acidity

The solubility of gases and vapours in ethanol - the connection between gaseous solubility and water-solvent partition

1998 ◽  
Vol 76 (6) ◽  
pp. 703-709 ◽  
Author(s):  
Michael H Abraham ◽  
Gary S Whiting ◽  
Wendel J Shuely ◽  
Ruth M Doherty
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonding ◽  
Correlation Equation ◽  
Strong Hydrogen Bond ◽  
Log P ◽  
Water Solvent ◽  
Chemical Factors ◽  
Solubility Of Gases ◽  
Solubility Coefficients ◽  
Hydrogen Bond Acidity

Ostwald solubility coefficients, as log L, for solutes in water and ethanol have been combined to give log PEtOH for partition between the two pure solvents. Sixty-four such values have been correlated through our solvation equation, the coefficients of which lead to the conclusion that ethanol and water solvents are equally strong hydrogen-bond bases, but that ethanol is much weaker as a hydrogen-bond acid. A slightly different solvation equation has been used to correlate 68 values of log LEtOH; the coefficients in this equation yield the same conclusions as to the hydrogen-bond acidity and basicity of bulk ethanol. In addition, an analysis of the various terms in the log LEtOH correlation equation allows the elucidation of the various chemical factors that govern the solubility of gaseous solutes in ethanol solvent at 298 K.Key words: solubility, partition, hydrogen-bonding, ethanol, water.

Theoretical Scales of Hydrogen Bond Acidity and Basicity for Application in QSAR/QSPR Studies and Drug Design. Partitioning of Aliphatic Compounds

2004 ◽  
Vol 44 (3) ◽  
pp. 1042-1055 ◽  
Author(s):  
Alexander A. Oliferenko ◽  
Polina V. Oliferenko ◽  
Jonathan G. Huddleston ◽  
Robin D. Rogers ◽  
Vladimir A. Palyulin ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Drug Design ◽  
Aliphatic Compounds ◽  
Acidity And Basicity ◽  
Hydrogen Bond Acidity

scholarly journals Infrared and Raman Spectroscopy of Ammoniovoltaite, (NH4)2Fe2+5Fe3+3Al(SO4)12(H2O)18

Minerals ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 781
Author(s):  
Anastasia V. Sergeeva ◽  
Elena S. Zhitova ◽  
Anton A. Nuzhdaev ◽  
Andrey A. Zolotarev ◽  
Vladimir N. Bocharov ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Raman Spectroscopy ◽  
Hydrogen Bonding ◽  
Raman Spectrum ◽  
Local Symmetry ◽  
Geothermal Field ◽  
Infrared And Raman Spectra ◽  
Infrared And Raman Spectroscopy ◽  
Related Compounds

Ammoniovoltaite, (NH4)2Fe2+5Fe3+3Al(SO4)12(H2O)18, is a complex hydrated sulphate of the voltaite group that has been recently discovered on the surface of the Severo-Kambalny geothermal field (Kamchatka, Russia). Vibrational spectroscopy has been applied for characterization of the mineral. Both infrared and Raman spectra of ammoniovoltaite are characterized by an abundance of bands, which corresponds to the diversity of structural fragments and variations of their local symmetry. The infrared spectrum of ammoniovoltaite is similar to that of other voltaite-related compounds. The specific feature related to the dominance of the NH4 group is its ν4 mode observed at 1432 cm−1 with a shoulder at 1510 cm−1 appearing due to NH4 disorder. The Raman spectrum of ammoniovoltaite is basically different from that of voltaite by the appearance of an intensive band centered at 3194 cm−1 and attributed to the ν3 mode of NH4. The latter can serve as a distinctive feature of ammonium in voltaite-group minerals in resemblance to recently reported results for another NH4-mineral—tschermigite, where ν3 of NH4 occurs at 3163 cm−1. The values calculated from wavenumbers of infrared bands at 3585 cm−1, 3467 cm−1 and 3400 cm−1 for hydrogen bond distances: d(O···H) and d(O···O) correspond to bonding involving H1 and H2 atoms of Fe2+X6 (X = O, OH) octahedra. The infrared bands observed at 3242 cm−1 and 2483 cm−1 are due to stronger hydrogen bonding, that may refer to non-localized H atoms of Al(H2O)6 or NH4.

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