scholarly journals Ionic liquids as solvents for PPTA oligomers

2016 ◽  
Vol 18 (6) ◽  
pp. 1639-1652 ◽  
Author(s):  
Sven Dewilde ◽  
Wim Dehaen ◽  
Koen Binnemans
Keyword(s):  
Hydrogen Bond ◽  
Ionic Liquids ◽  
Hydrogen Bond Network ◽  
Bond Network ◽  
Break Up ◽  
Phosphonium Ionic Liquids

Ionic liquids with coordinating anions can break up the hydrogen bond network of PPTA oligomers. Phosphonium ionic liquids were found to be the strongest solvents enabling them to be possible alternatives for the synthesis of PPTA.

scholarly journals Solvation structure of poly-m-phenyleneisophthalamide (PMIA) in ionic liquids

2019 ◽  
Vol 21 (7) ◽  
pp. 4053-4062 ◽  
Author(s):  
Jonas Winters ◽  
Wim Dehaen ◽  
Koen Binnemans
Keyword(s):  
Hydrogen Bond ◽  
Ionic Liquids ◽  
Solvation Shell ◽  
Hydrogen Bond Network ◽  
Solvation Structure ◽  
Bond Network ◽  
Break Up

Poly-m-phenyleneisophthalamide (PMIA) is soluble in ionic liquids that can break up its hydrogen bond network and form a stable solvation shell through alternating cation–anion interactions.

HYDROGEN BOND NETWORK OF 1-ALKYL-3-METHYLIMIDAZOLIUM IONIC LIQUIDS: A NETWORK THEORY ANALYSIS

2012 ◽  
Vol 11 (03) ◽  
pp. 587-598 ◽  
Author(s):  
ZICHANG XIONG ◽  
JUN GAO ◽  
DONGJU ZHANG ◽  
CHENGBU LIU
Keyword(s):  
Hydrogen Bond ◽  
Ionic Liquids ◽  
Network Theory ◽  
Average Length ◽  
Hydrogen Bond Network ◽  
Connection Pattern ◽  
Key Factor ◽  
Zero Degree ◽  
Bond Network ◽  
And Function

Hydrogen bond is a key factor in the determination of structures and properties of room-temperature ionic liquids. Connections of these hydrogen bonds form a network. In this work, we analyzed the hydrogen bond network of 1-alkyl-3-methylimidazolium ionic liquids using network theory. A two-dimensional view of the hydrogen bond network has been generated, the connection pattern shown that the average length of line shape connection is 2.44 to 2.77 for six 1-alkyl-3-methylimidazolium ionic liquids, and the connection patterns are different for short and long alkyl side chain length. The degree of each ion was calculated and analyzed. The nodes with zero degree were adopted to detect the boundary of the clusters in the ionic liquids, which have no hydrogen bond connected with neighbor ions. This work indicates that the network analysis method is useful for understanding and predicting the structure and function of RTILs.

Tailoring the properties of acetate-based ionic liquids using the tricyanomethanide anion

2016 ◽  
Vol 18 (33) ◽  
pp. 23285-23295 ◽  
Author(s):  
L. F. Lepre ◽  
J. Szala-Bilnik ◽  
A. A. H. Padua ◽  
M. Traïkia ◽  
R. A. Ando ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Ionic Liquids ◽  
Acetate Anion ◽  
Hydrogen Bond Network ◽  
Bond Network

The properties of the mixtures [C4C1Im][OAc](1−x)[C(CN)3]x are explained by a rearrangement of the hydrogen-bond network favouring the interaction of the acetate anion with the C2 position of the cation.

Halides of Macrocyclic Silver(II) Complexes: Crystal Structures with Hydrogen Bond Network and Reaction Kinetics of the Decomposition

2021 ◽  
pp. 120431
Author(s):  
Akinori Honda ◽  
Shunta Kakihara ◽  
Shuhei Ichimura ◽  
Kazuaki Tomono ◽  
Mina Matsushita ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Reaction Kinetics ◽  
Crystal Structures ◽  
Hydrogen Bond Network ◽  
Bond Network ◽  
Kinetics Of

scholarly journals Hydrogen‐Bond Network Determines the Early Photoisomerization of Cph1 and AnPixJ Phytochromes

2021 ◽  
Author(s):  
Xiang-Yang Liu ◽  
Teng-Shuo Zhang ◽  
Qiu Fang ◽  
Wei-Hai Fang ◽  
Leticia González ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bond Network ◽  
Bond Network

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.

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