Results 11 to 20 of about 825,816 (298)

Disposition of Federally Owned Surpluses [PDF]

open access: yes, 1944
PDZ domains are scaffolding modules in protein-protein interactions that mediate numerous physiological functions by interacting canonically with the C-terminus or non-canonically with an internal motif of protein ligands. A conserved carboxylate-binding
A Bach   +50 more
core   +2 more sources

Four related benzazepine derivatives in a reaction pathway leading to a benzazepine carboxylic acid : hydrogen-bonded assembly in zero, one, two and three dimensions [PDF]

open access: yes, 2014
The authors thank ‘Centro de Instrumentacion Cientıfico-Tecnica of Universidad de Jaen’ and the staff for data collection. AP, SAG and CMS thank Colciencias for financial support (grant No. 1102–521–28229). JC thanks the Consejerıa de Innovacion, Ciencia
Cobo, J.   +4 more
core   +2 more sources

Tetraammonium Tetrametaphosphimate Tetrahydrate [PDF]

open access: yes, 1998
The tetrametaphosphimate ring in the title compound, (NH4)4+(PO2NH)4-.4H2O exhibits a chair conformation. The tetrametaphosphimate rings are linked by N-HO bonds forming columns along [100].
Schnick, Wolfgang, Stock, Norbert
core   +1 more source

Dynamics of Bound and Free Water in an Aqueous Micellar Solution : Analysis of the Lifetime and Vibrational Frequencies of Hydrogen Bonds at a Complex Interface [PDF]

open access: yes, 2003
In order to understand the nature and dynamics of interfacial water molecules on the surface of complex systems, large scale molecular dynamics simulations of an aqueous micelle of cesium perfluorooctanoate surfactant molecules have been carried out. The
Bagchi, Biman   +2 more
core   +2 more sources

MAS NMR detection of hydrogen bonds for protein secondary structure characterization [PDF]

open access: yes, 2020
Hydrogen bonds are essential for protein structure and function, making experimental access to long-range interactions between amide protons and heteroatoms invaluable. Here we show that measuring distance restraints involving backbone hydrogen atoms and
Friedrich, Daniel   +3 more
core   +1 more source

Enzymatic functionalization of carbon-hydrogen bonds [PDF]

open access: yes, 2011
The development of new catalytic methods to functionalize carbon–hydrogen (C–H) bonds continues to progress at a rapid pace due to the significant economic and environmental benefits of these transformations over traditional synthetic methods.
Arnold, Frances H.   +2 more
core   +1 more source

Hydrogen bonds in PC61BM solids

open access: yesAIP Advances, 2015
We have studied the hydrogen bonds in PC61BM solids. Inter-molecular interaction is analyzed theoretically for the well-defined monoclinic (P21/n) structure.
Chun-Qi Sheng   +6 more
doaj   +1 more source

Tetramethylammonium dihydrogen phosphate hemihydrate

open access: yesActa Crystallographica Section E, 2009
In the crystal structure of the title compound, C4H12N+·H2PO4−·0.5H2O, the anions form an infinite hydrogen-bonded chain along the [1overline{1}0] direction.
Kyoko Fujita   +3 more
doaj   +1 more source

Intramolecular hydrogen bonds in 1,4-dihydropyridine derivatives [PDF]

open access: yesRoyal Society Open Science, 2018
1,4-Dihydropyridine (1,4-DHP) derivatives have been synthesized and characterized by 1H, 13C, 15N nuclear magnetic resonance (NMR) spectroscopy, secondary proton/deuterium 13C isotope shifts, variable temperature 1H NMR experiments and quantum-chemical ...
M. Petrova   +4 more
doaj   +1 more source

A model for the hydrogen bond [PDF]

open access: yesProceedings of the National Academy of Sciences, 1975
A model of the linear hydrogen bond has been devised which is characterized by three physical parameters of the isolated electron donor and proton donor molecules: μ A-H , the bond dipole moment; Δ I , the difference in ionization potential between that of the electron donor and the ...
openaire   +2 more sources

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