Diffusion Behavior of Water Molecules in Hydrogels with Controlled Network Structure

2019 ◽  
Vol 52 (5) ◽  
pp. 1923-1929 ◽  
Author(s):  
Takeshi Fujiyabu ◽  
Xiang Li ◽  
Ung-il Chung ◽  
Takamasa Sakai
Keyword(s):  
Network Structure ◽  
Water Molecules ◽  
Diffusion Behavior

scholarly journals Crystal structure and hydrogen bonding in the water-stabilized proton-transfer salt brucinium 4-aminophenylarsonate tetrahydrate

2016 ◽  
Vol 72 (5) ◽  
pp. 751-755 ◽  
Author(s):  
Graham Smith ◽  
Urs D. Wermuth
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Hydrogen Bonding ◽  
Hydrogen Bonds ◽  
Proton Transfer ◽  
Network Structure ◽  
Three Dimensional ◽  
Water Molecules ◽  
Arsanilic Acid ◽  
Dimensional Network

In the structure of the brucinium salt of 4-aminophenylarsonic acid (p-arsanilic acid), systematically 2,3-dimethoxy-10-oxostrychnidinium 4-aminophenylarsonate tetrahydrate, (C23H27N2O4)[As(C6H7N)O2(OH)]·4H2O, the brucinium cations form the characteristic undulating and overlapping head-to-tail layered brucine substructures packed along [010]. The arsanilate anions and the water molecules of solvation are accommodated between the layers and are linked to them through a primary cation N—H...O(anion) hydrogen bond, as well as through water O—H...O hydrogen bonds to brucinium and arsanilate ions as well as bridging water O-atom acceptors, giving an overall three-dimensional network structure.

Triaquatris(nitrato-κ2 O,O′)lanthanum(III) 4,4′-bipyridine disolvate

2007 ◽  
Vol 63 (11) ◽  
pp. m2715-m2716
Author(s):  
Nai-Gen Li ◽  
Rui-Min Tao ◽  
Bang-Feng Fu
Keyword(s):  
Hydrogen Bonds ◽  
Network Structure ◽  
Title Complex ◽  
Mononuclear Complex ◽  
Water Molecules ◽  
Supramolecular Network

The LaIII atom in the title complex, [La(NO3)3(H2O)3]·2C10H8N2, is irregularly coordinated by three O atoms of three water molecules and six O atoms of three NO3 − ligands. This mononuclear complex is further extended into a supramolecular network structure via O—H...O and O—H...N hydrogen bonds.

MD Analysis of Effect of Relative Humidity on Molecular Chain’s Network Structure of PEM

2016 ◽  
Vol 725 ◽  
pp. 238-242
Author(s):  
Isamu Riku ◽  
Keisuke Kawanishi ◽  
Koji Mimura
Keyword(s):  
Molecular Dynamics ◽  
Relative Humidity ◽  
Computational Model ◽  
Network Structure ◽  
Water Channel ◽  
High Density ◽  
Nafion Membrane ◽  
Water Molecules ◽  
Low Density ◽  
Density Of Water

To clarify the effect of relative humidity on molecular chain’s network structure, we at first employ Molecular Dynamics (MD) method to constitute the computational model for Nafion membrane, in which the water channel is artificially reproduced with an aggregation of water molecules. And then, relaxation calculation is performed and a relatively stable microstructure of Nafion membrane is derived. It is found that the regions of relatively low density of molecular chain’s network appear interchangeably together with those of relatively high density of water molecules.

scholarly journals Crystal structure of disodium 2-amino-6-oxo-6,7-dihydro-1H-purine-1,7-diide heptahydrate

2015 ◽  
Vol 71 (3) ◽  
pp. 281-283 ◽  
Author(s):  
Dvir Gur ◽  
Linda J. W. Shimon
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Network Structure ◽  
Title Compound ◽  
Water Molecules ◽  
Partial Overlap

In the title compound, disodium 2-amino-6-oxo-6,7-dihydro-1H-purine-1,7-diide heptahydrate, 2Na+·C5H3N5O2−·7H2O, the structure is composed of alternating (100) layers of guanine molecules and hydrated Na+ions. Within the guanine layer, the molecules are arranged in centrosymmetric pairs, with a partial overlap between the guanine rings. In this compound, guanine exists as the amino–keto tautomer from which deprotonation from N1and N7has occurred (purine numbering). There are no direct interactions between the Na+cations and the guanine anions. Guanine molecules are linked to neighboring water molecules by O—H...N and O—H...O hydrogen bonds into a network structure.

Triaqua[2-(6-oxido-4-oxo-3,4-dihydropyimidin-2-ylsulfanyl)acetato]nickel(II) 2.5-hydrate

2007 ◽  
Vol 63 (3) ◽  
pp. m761-m763 ◽  
Author(s):  
Yan Jiao ◽  
Zhao-Rui Pan ◽  
Zhi-Jie Fang ◽  
Yi-Zhi Li ◽  
He-Gen Zheng
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Network Structure ◽  
Title Compound ◽  
Three Dimensional ◽  
Organic Ligand ◽  
Water Molecules ◽  
Hydrogen Bonding Interactions ◽  
Acetate Ligand ◽  
Dimensional Network

In the crystal structure of the title compound, [Ni(C6H4N2O4S)(H2O)3]·2.5H2O, the NiII atom is six-coordinated by one 2-(6-oxido-4-oxo-3,4-dihydropyimidin-2-ylsulfanyl)acetate ligand and three water molecules. Hydrogen-bonding interactions between the coordinated and uncoordinated water molecules and between the water molecules and the organic ligand result in a three-dimensional network structure.

scholarly journals Crystal structure of an organic–inorganic hybrid compound based on morpholinium cations and a β-type Anderson polyanion

2015 ◽  
Vol 71 (11) ◽  
pp. 1345-1348
Author(s):  
Tamara J. Lukianova ◽  
Vasyl Kinzhybalo ◽  
Adam Pietraszko
Keyword(s):  
Crystal Structure ◽  
Aqueous Solution ◽  
Network Structure ◽  
Three Dimensional ◽  
Water Molecules ◽  
Hybrid Compound ◽  
Inorganic Hybrid ◽  
Dimensional Network

A new organic–inorganic hybrid compound, pentamorpholinium hexahydrogen hexamolybdoferrate(III) sulfate 3.5-hydrate, (C4H10NO)5[FeIII(OH)6Mo6O18](SO4)·3.5H2O, was obtained from an aqueous solution. The polyoxidomolybdate (POM) anion is of the Anderson β-type with a central FeIIIion. Three of five crystallographically independent morpholinium cations are disordered over two sets of sites. An intricate network of intermolecular N—H...O and O—H...O interactions between cations, POMs, sulfate anions and non-coordinating water molecules creates a three-dimensional network structure.

Effect of interfacial structure on bioinert properties of poly(2-methoxyethyl acrylate)/poly(methyl methacrylate) blend films in water

2015 ◽  
Vol 17 (26) ◽  
pp. 17399-17405 ◽  
Author(s):  
T. Hirata ◽  
H. Matsuno ◽  
D. Kawaguchi ◽  
N. L. Yamada ◽  
M. Tanaka ◽  
...  
Keyword(s):  
Methyl Methacrylate ◽  
Network Structure ◽  
Platelet Adhesion ◽  
Interfacial Structure ◽  
Water Molecules ◽  
Water Interface ◽  
Blend Film ◽  
Blend Films ◽  
Structure Of Water ◽  
Effective Suppression

Poly(2-methoxyethyl acrylate) (PMEA) segregation to the water interface in a blend film disturbed the network structure of water molecules, resulting in effective suppression of platelet adhesion.

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