Results 331 to 340 of about 1,959,399 (361)

Weak Intermolecular Hydrogen Bonds with Fluorine: Detection and Implications for Enzymatic/Chemical Reactions, Chemical Properties, and Ligand/Protein Fluorine NMR Screening.

Chemistry, 2016
It is known that strong hydrogen-bonding interactions play an important role in many chemical and biological systems. However, weak or very weak hydrogen bonds, which are often difficult to detect and characterize, may also be relevant in many ...
C. Dalvit, A. Vulpetti
semanticscholar   +1 more source

Persistent Hydrogen‐Bonded and Non‐Hydrogen‐Bonded Phenoxyl Radicals

Chemistry – A European Journal, 2011
AbstractThe production of stable phenoxyl radicals is undoubtedly a synthetic chemical challenge. Yet it is a useful way to gain information on the properties of the biological tyrosyl radicals. Recently, several persistent phenoxyl radicals have been reported, but only limited synthetic variations could be achieved.
Maxim L. Kuznetsov, Armando J. L. Pombeiro, Riccardo Wanke, Laurent Benisvy, M. Fátima C. Guedes da Silva, M. Fátima C. Guedes da Silva   +5 more
openaire   +3 more sources

High-Strength, Tough, and Self-Healing Nanocomposite Physical Hydrogels Based on the Synergistic Effects of Dynamic Hydrogen Bond and Dual Coordination Bonds.

ACS Applied Materials and Interfaces, 2017
Dynamic noncovalent interactions with reversible nature are critical for the integral synthesis of self-healing biological materials. In this work, we developed a simple one-pot strategy to prepare a fully physically cross-linked nanocomposite hydrogel ...
Changyou Shao, Huanliang Chang, Meng Wang, Feng Xu, Jun Yang   +4 more
semanticscholar   +1 more source

Density functional theory and hydrogen bonds: are we there yet?

ChemPhysChem, 2015
Density functional theory (DFT) has become more successful at introducing dispersion interactions, and can be thus applied to a wide range of systems. Amongst these are systems that contain hydrogen bonds, which are extremely important for the biological
A. Boese
semanticscholar   +1 more source

Hydrogen Bonds of Anilines

ChemInform, 2007
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
openaire   +4 more sources

Understanding the crystallization behavior of polyamide 6/polyamide 66 alloys from the perspective of hydrogen bonds: projection moving-window 2D correlation FTIR spectroscopy and the enthalpy

, 2016
In this study, the crystallization behavior of PA6/PA66 alloys was studied using in situ FTIR spectroscopy, combined with Proj-MW2D correlation analysis and DSC measurements. The method for calculating the generation enthalpy of hydrogen bonds during PA6/
Yanan Ma, Tao Zhou, Gehong Su, Yan Li, Aiming Zhang   +4 more
semanticscholar   +1 more source

Halogen bonds in crystal engineering: like hydrogen bonds yet different.

Accounts of Chemical Research, 2014
The halogen bond is an attractive interaction in which an electrophilic halogen atom approaches a negatively polarized species. Short halogen atom contacts in crystals have been known for around 50 years. Such contacts are found in two varieties: type I,
Arijita Mukherjee, Srinu Tothadi, G. Desiraju   +2 more
semanticscholar   +1 more source

Partition coefficients and intramolecular hydrogen bonding. 1. The hydrogen-bond basicity of intramolecular hydrogen-bonded heteroatoms

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 ...
Christian Laurence, Robert W. Taft, Michel Berthelot, Denis Foucher   +3 more
openaire   +2 more sources

Imidazole tailored deep eutectic solvents for CO2 capture enhanced by hydrogen bonds.

Physical Chemistry, Chemical Physics - PCCP, 2015
Deep eutectic solvents (DESs) have emerged as promising alternative candidates for CO2 capture in recent years. In this work, several novel DESs were firstly prepared to enhance CO2 absorption. Structural and physical properties of DESs were investigated,
Lingdi Cao, Junhua Huang, Xiangping Zhang, Suojiang Zhang, Jubao Gao, Shaojuan Zeng   +5 more
semanticscholar   +1 more source

Hydrogen-Bonding: An update

Crystallography Reviews, 1995
This article focusses on the crystallographic research aimed at a better understanding of hydrogen bonds which has been published since January 1990. In the interest of continuity, earlier work is quoted when it relates to that published during this period.
openaire   +2 more sources