Two-Dimensional Organic Brick-Wall Layers as Hosts for the Inclusion and Study of Aromatics Ensembles: Acid−Pyridine and Acid−Carbonyl Synthons for Multicomponent Materials

2009 ◽  
Vol 9 (11) ◽  
pp. 4969-4978 ◽  
Author(s):  
Ramkinkar Santra ◽  
Kumar Biradha
Keyword(s):  
Brick Wall ◽  
Two Dimensional ◽  
Multicomponent Materials

Assembly of C-propyl-pyrogallol[4]arene with bipyridine-based spacers and solvent molecules

2020 ◽  
Vol 75 (4) ◽  
pp. 341-345
Author(s):  
Xiao-Li Liu ◽  
Jing-Long Liu ◽  
Hong-Mei Yang ◽  
Ai-Quan Jia ◽  
Qian-Feng Zhang
Keyword(s):  
Mixed Solvent ◽  
Polymer Structure ◽  
Brick Wall ◽  
Two Dimensional ◽  
One Dimensional ◽  
X Ray ◽  
X Ray Crystallography ◽  
Wave Trough ◽  
Hydrogen Bonding Networks ◽  
Solvent Molecules

AbstractCo-crystallization of C-propyl-pyrogallol[4]arene (PgC3) with 4,4′-bipyridine (bpy) in ethanol afforded a multi-component complex (PgC3) · 3(bpy) ·(EtOH) (1) that consists of a one-dimensional brick-wall framework, which was formed by four pyrogallol[4]arene molecules and two juxtaposed bpy molecules, entrapping two other bpy molecules as guests within each cavity. Heating a mixture of PgC3 and trans-1,2-bis-(4-pyridyl)ethylene (bpe) in an ethanol-water mixed solvent allowed the isolation of a multi-component complex (PgC3) ·(bpe) · 2(EtOH) ·(H2O) (2), which has a two-dimensional wave-like polymer structure with the bpe molecules embedded in the wave trough between two PgC3 molecules. Single-crystal X-ray crystallography was utilized to investigate the hydrogen bonding networks of the multi-component complexes 1 and 2.

ENTROPY OF A NONSTATIC BLACK HOLE

2000 ◽  
Vol 15 (28) ◽  
pp. 1739-1747 ◽  
Author(s):  
LI XIANG ◽  
ZHAO ZHENG
Keyword(s):  
Black Hole ◽  
Black Hole Entropy ◽  
Time Dependent ◽  
Brick Wall ◽  
Two Dimensional ◽  
De Sitter ◽  
Wall Model ◽  
New Model ◽  
Brick Wall Model ◽  
Dynamical Degrees

We point out that the brick-wall model cannot be applied to the nonstatic black hole. In the case of a static hole, we propose a new model where the black hole entropy is attributed to the dynamical degrees of the field covering the two-dimensional membrane just outside the horizon. A cutoff different from the model of 't Hooft is necessarily introduced. It can be treated as an increase in horizon because of the space–time fluctuations. We also apply our model to the nonequilibrium and nonstatic cases, such as Schwarzschild–de Sitter and Vaidya space–times. In the nonstatic case, the entropy relies on a time-dependent cutoff.

A cyano-bridged molecular magnet with a novel two-dimensional brick wall structure

2000 ◽  
pp. 1309-1310 ◽  
Author(s):  
Hui-Zhong Kou ◽  
Song Gao ◽  
Bao-Qing Ma ◽  
Dai-Zheng Liao
Keyword(s):  
Wall Structure ◽  
Molecular Magnet ◽  
Brick Wall ◽  
Two Dimensional

ChemInform Abstract: Metamagnetism of the First Cyano-Bridged Two-Dimensional Brick-Wall-like 4f-3d Array.

ChemInform ◽  
2010 ◽  
Vol 32 (34) ◽  
pp. no-no
Author(s):  
Hui-Zhong Kou ◽  
Song Gao ◽  
Bai-Wang Sun ◽  
Jing Zhang
Keyword(s):  
Brick Wall ◽  
Two Dimensional

scholarly journals A two-dimensional copper(I) coordination polymer based on 1-[2-(cyclohexylsulfanyl)ethyl]pyridin-2(1H)-one

2017 ◽  
Vol 73 (11) ◽  
pp. 1782-1785
Author(s):  
Hyunjin Park ◽  
Jineun Kim ◽  
Hansu Im ◽  
Tae Ho Kim
Keyword(s):  
Coordination Polymer ◽  
Hydrogen Bonds ◽  
Wall Structure ◽  
Brick Wall ◽  
Two Dimensional ◽  
Asymmetric Unit ◽  
Iodide Ions ◽  
Π Interactions

The reaction of copper(I) iodide with 1-[2-(cyclohexylsulfanyl)ethyl]pyridin-2(1H)-one (L, C13H19NOS) in acetonitrile/dichloromethane results in a crystalline coordination polymer, namely poly[bis{μ2-1-[2-(cyclohexylsulfanyl)ethyl]pyridin-2(1H)-one}tetra-μ3-iodidotetracopper(I)], [Cu4I4L2]n. The asymmetric unit comprises two ligand molecules, four copper(I) ions and four iodide ions. Interestingly, the O atoms are bound to the soft copper(I) ions. The stair-step clusters of Cu and I atoms in the asymmetric unit are linked repeatedly, giving rise to infinite chains along [100]. Neighbouring infinite chains are linked through theLmolecules, forming a two-dimensional brick-wall structure. These two-dimensional networks are stacked alternately along [001]. Additionally, there are intermolecular C—H...I hydrogen bonds and C—H...π interactions between the ligands.

Atom Classification Model for Total Energy Evaluation of Two-Dimensional Multicomponent Materials

2020 ◽  
Vol 124 (22) ◽  
pp. 4506-4511 ◽  
Author(s):  
Chang-Chun He ◽  
Shao-Bin Qiu ◽  
Ju-Song Yu ◽  
Ji-Hai Liao ◽  
Yu-Jun Zhao ◽  
...  
Keyword(s):  
Total Energy ◽  
Classification Model ◽  
Two Dimensional ◽  
Energy Evaluation ◽  
Multicomponent Materials
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