scholarly journals Structural relaxation, viscosity, and network connectivity in a hydrogen bonding liquid

2017 ◽  
Vol 19 (38) ◽  
pp. 25859-25869 ◽  
Author(s):  
Stefania Perticaroli ◽  
Barmak Mostofian ◽  
Georg Ehlers ◽  
Joerg C. Neuefeind ◽  
Souleymane O. Diallo ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Structural Relaxation ◽  
Network Connectivity ◽  
Structure And Dynamics ◽  
Bond Network

The structure and dynamics of the model H-bonding liquid,n-methylacetamide (NMA) have been studied, revealing the connection between the timescale of H-bond network reorganization and viscosity.

Supramolecular assembling using synthons with NH—CO(S)—CS—NH and NH—CO—CO—NH functionalities: crystal structures of (S,S)-N,N′-monothiooxalyldileucine methyl ester and its dithio analogue

2004 ◽  
Vol 60 (1) ◽  
pp. 90-96 ◽  
Author(s):  
Biserka Kojić-Prodić ◽  
Berislav Perić ◽  
Zoran Štefanić ◽  
Anton Meden ◽  
Janja Makarević ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonding ◽  
Methyl Ester ◽  
Crystal Structures ◽  
Hydrogen Bond Network ◽  
Asymmetric Unit ◽  
Orthorhombic Space Group ◽  
Space Group ◽  
Bond Network ◽  
Bonding Systems

To compare the structural properties of oxalamide and thiooxalamide groups in the formation of hydrogen bonds suitable for supramolecular assemblies a series of retropeptides was studied. Some of them, having oxalamide bridges, are gelators of organic solvents and water. However, retropeptides with oxygen replaced by the sp 2 sulfur have not exhibited such properties. The crystal structures of the two title compounds are homostructural, i.e. they have similar packing arrangements. The monothio compound crystallizes in the orthorhombic space group P212121 with two molecules in the asymmetric unit arranged in a hydrogen-bond network with an approximate 41 axis along the crystallographic b axis. However, the dithio and dioxo analogues crystallize in the tetragonal space group P41 with similar packing patterns and hydrogen-bonding systems arranged in agreement with a crystallographic 41 axis. Thus, these two analogues are isostructural having closely related hydrogen-bonding patterns in spite of the different size and polarity of oxygen and sulfur which serve as the proton acceptors.

Local Structure and Dynamics of Water Absorbed in Poly(ether imide): A Hydrogen Bonding Anatomy

2017 ◽  
Vol 121 (14) ◽  
pp. 3162-3176 ◽  
Author(s):  
Antonio de Nicola ◽  
Andrea Correa ◽  
Giuseppe Milano ◽  
Pietro La Manna ◽  
Pellegrino Musto ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Local Structure ◽  
Structure And Dynamics

Investigation into the role of the hydrogen bonding network in cyclodextrin-based self-assembling mesophases

2014 ◽  
Vol 2 (25) ◽  
pp. 4928-4936 ◽  
Author(s):  
Sandra Ward ◽  
Oliver Calderon ◽  
Ping Zhang ◽  
Matthew Sobchuk ◽  
Samantha N. Keller ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Self Organized ◽  
Self Assembling ◽  
Bond Network ◽  
Hydrogen Bonding Network

The ability to form self-organized thermotropic mesophases of amphiphilic cyclodextrins correlates well with their ability to establish an intermolecular H-bond network.

scholarly journals Correction to “Isonitrile as an Ultrasensitive Infrared Reporter of Hydrogen-Bonding Structure and Dynamics”

2016 ◽  
Vol 120 (50) ◽  
pp. 13001-13001
Author(s):  
M. Maj ◽  
C. Ahn ◽  
B. Błasiak ◽  
K. Kwak ◽  
H. Han ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Bonding Structure ◽  
Structure And Dynamics

Isonitrile as an Ultrasensitive Infrared Reporter of Hydrogen-Bonding Structure and Dynamics

2016 ◽  
Vol 120 (39) ◽  
pp. 10167-10180 ◽  
Author(s):  
Michał Maj ◽  
Changwoo Ahn ◽  
Bartosz Błasiak ◽  
Kyungwon Kwak ◽  
Hogyu Han ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Bonding Structure ◽  
Structure And Dynamics

Tautomerism and hydrogen bonding in guaninium phosphite and guaninium phosphate salts

2007 ◽  
Vol 63 (3) ◽  
pp. 448-458 ◽  
Author(s):  
El-Eulmi Bendeif ◽  
Slimane Dahaoui ◽  
Nourredine Benali-Cherif ◽  
Claude Lecomte
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonding ◽  
Crystal Structures ◽  
Monoclinic Space Group ◽  
Data Sets ◽  
Hydrogen Bond Network ◽  
Space Group ◽  
X Ray ◽  
Bond Network ◽  
Phosphate Salts

The crystal structures of three similar guaninium salts, guaninium monohydrogenphosphite monohydrate, C5H6N5O+·H2O3P−·H2O, guaninium monohydrogenphosphite dihydrate, C5H6N5O+·H2O3P−·2H2O, and guaninium dihydrogenmonophosphate monohydrate, C5H6N5O+·H2O4P−·H2O, are described and compared. The crystal structures have been determined from accurate single-crystal X-ray data sets collected at 100 (2) K. The two phosphite salts are monoclinic, space group P21/c, with different packing and the monophosphate salt is also monoclinic, space group P21/n. An investigation of the hydrogen-bond network in these guaninium salts reveals the existence of two ketoamine tautomers, the N9H form and an N7H form.

Structure and Dynamics of 9(10H)-Acridone and Its Hydrated Clusters. II. Structural Characterization of Hydrogen-Bonding Networks

2000 ◽  
Vol 104 (38) ◽  
pp. 8649-8659 ◽  
Author(s):  
Masaaki Mitsui ◽  
Yasuhiro Ohshima ◽  
Shun-ichi Ishiuchi ◽  
Makoto Sakai ◽  
Masaaki Fujii
Keyword(s):  
Hydrogen Bonding ◽  
Structural Characterization ◽  
Structure And Dynamics ◽  
Hydrogen Bonding Networks ◽  
Hydrated Clusters

Theoretical aspects of the enhancement of metal binding affinity by intramolecular hydrogen bonding and modulating pKavalues

2017 ◽  
Vol 41 (24) ◽  
pp. 15110-15119 ◽  
Author(s):  
Ahmad Motahari ◽  
Alireza Fattahi
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonding ◽  
Binding Affinity ◽  
Metal Binding ◽  
Intramolecular Hydrogen Bonding ◽  
Hydrogen Bond Network ◽  
Bond Network ◽  
The Stability ◽  
Intramolecular Hydrogen

The stability balance shows that the hydrogen bond network and modulation of pKavalues can enhance the metal binding affinity.

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