Pressure-induced molecular assembly of hydrogen-bonded polymers

2008 ◽  
Vol 46 (7) ◽  
pp. 743-750 ◽  
Author(s):  
Shingo Mutsuo ◽  
Kazuya Yamamoto ◽  
Tsutomu Furuzono ◽  
Tsuyoshi Kimura ◽  
Tsutomu Ono ◽  
...  
Keyword(s):  
Molecular Assembly ◽  
Hydrogen Bonded

A Step Towards a [2.2]Paracyclophane: A Single Crystal to Single Crystal Reaction Involving a Hydrogen-Bonded Molecular Assembly with Multiple Reaction Centres

2006 ◽  
Vol 59 (9) ◽  
pp. 613 ◽  
Author(s):  
Tomislav Friščić ◽  
Leonard R. MacGillivray
Keyword(s):  
Solid State ◽  
Single Crystal ◽  
Absorption Edge ◽  
Molecular Assembly ◽  
Solid State Synthesis ◽  
State Transformation ◽  
Molecular Assemblies ◽  
Solid State Transformation ◽  
Reaction Centres ◽  
Hydrogen Bonded

A single crystal to single crystal [2+2] photodimerization has been achieved within a molecular cocrystal composed of finite, hydrogen-bonded molecular assemblies using the absorption-edge irradiation technique. The cocrystal is composed of a resorcinol template and a diolefin reactant that reacts to form a non-symmetrical cyclobutane product. The product is an intermediate in a two-step solid-state synthesis of a [2.2]paracyclophane. The ability to conduct the reaction in a single crystal to single crystal fashion attests to the robustness of the hydrogen-bonded assemblies during the course of the solid-state transformation.

Effect of Substituent Position on Molecular Assembly: Hydrogen-Bonded Arrangement of Aminobenzoates Adsorbed on Cu(110)

2009 ◽  
Vol 48 (8) ◽  
pp. 08JB16 ◽  
Author(s):  
Satoshi Katano ◽  
Masafumi Hori ◽  
Caroline Rabot ◽  
Yousoo Kim ◽  
Maki Kawai
Keyword(s):  
Molecular Assembly ◽  
Hydrogen Bonded

Crystallization of a Two-Dimensional Hydrogen-Bonded Molecular Assembly: Evolution of the Local Structure Resolved by Atomic Force Microscopy

2017 ◽  
Vol 129 (36) ◽  
pp. 10926-10930 ◽  
Author(s):  
Laerte L. Patera ◽  
Xunshan Liu ◽  
Nico Mosso ◽  
Silvio Decurtins ◽  
Shi-Xia Liu ◽  
...  
Keyword(s):  
Atomic Force Microscopy ◽  
Local Structure ◽  
Molecular Assembly ◽  
Two Dimensional ◽  
Force Microscopy ◽  
Atomic Force ◽  
Hydrogen Bonded

Sterically crowded hydrogen-bonded hexagonal network frameworks

2018 ◽  
Vol 2 (2) ◽  
pp. 338-346 ◽  
Author(s):  
Ichiro Hisaki ◽  
Nobuaki Ikenaka ◽  
Seiji Tsuzuki ◽  
Norimitsu Tohnai
Keyword(s):  
Substituent Effects ◽  
Molecular Assembly ◽  
Hexagonal Network ◽  
Hydrogen Bonded

TpMeandTpFwith substituents at theortho-positions of carboxy groups were synthesized and revealed substituent effects on molecular assembly.

Flavin radicals, conformational sampling and robust design principles in interprotein electron transfer: the trimethylamine dehydrogenase-electron-transferring flavoprotein complex

2004 ◽  
Vol 71 ◽  
pp. 1-14
Author(s):  
David Leys ◽  
Jaswir Basran ◽  
François Talfournier ◽  
Kamaldeep K. Chohan ◽  
Andrew W. Munro ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Dimensional Space ◽  
Three Dimensional ◽  
Kinetic Studies ◽  
Molecular Assembly ◽  
Conformational Sampling ◽  
Trimethylamine Dehydrogenase ◽  
Key Residues ◽  
Electron Transferring Flavoprotein ◽  
Electron Transfer Complex

TMADH (trimethylamine dehydrogenase) is a complex iron-sulphur flavoprotein that forms a soluble electron-transfer complex with ETF (electron-transferring flavoprotein). The mechanism of electron transfer between TMADH and ETF has been studied using stopped-flow kinetic and mutagenesis methods, and more recently by X-ray crystallography. Potentiometric methods have also been used to identify key residues involved in the stabilization of the flavin radical semiquinone species in ETF. These studies have demonstrated a key role for 'conformational sampling' in the electron-transfer complex, facilitated by two-site contact of ETF with TMADH. Exploration of three-dimensional space in the complex allows the FAD of ETF to find conformations compatible with enhanced electronic coupling with the 4Fe-4S centre of TMADH. This mechanism of electron transfer provides for a more robust and accessible design principle for interprotein electron transfer compared with simpler models that invoke the collision of redox partners followed by electron transfer. The structure of the TMADH-ETF complex confirms the role of key residues in electron transfer and molecular assembly, originally suggested from detailed kinetic studies in wild-type and mutant complexes, and from molecular modelling.

An Unnatural Amino Acid that Mimics a Tripeptide β-Strand and Forms β-Sheetlike Hydrogen-Bonded Dimers [J. Am. Chem. Soc.2000,122, 7654-7661]. 

2001 ◽  
Vol 123 (7) ◽  
pp. 1545-1546
Author(s):  
James S. Nowick ◽  
De Michael Chung ◽  
Kalyani Maitra ◽  
Santanu Maitra ◽  
Kimberly D. Stigers ◽  
...  
Keyword(s):  
Amino Acid ◽  
Unnatural Amino Acid ◽  
Hydrogen Bonded
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