scholarly journals The Important Role of Halogen Bond in Substrate Selectivity of Enzymatic Catalysis

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Shuiqin Jiang ◽  
Lujia Zhang ◽  
Dongbin Cui ◽  
Zhiqiang Yao ◽  
Bei Gao ◽  
...  
Author(s):  
Paulo F.A. Costa ◽  
Rafael de Abreu ◽  
Andressa B. Fontana ◽  
Haidi D. Fiedler ◽  
Anthony J. Kirby ◽  
...  

2001 ◽  
Vol 14 (2) ◽  
pp. 202-210 ◽  
Author(s):  
Catherine Moali ◽  
Jean-Luc Boucher ◽  
Axelle Renodon-Corniere ◽  
Dennis J. Stuehr ◽  
Daniel Mansuy

Author(s):  
Chenhao Tu ◽  
Nana Ma ◽  
Qingli Xu ◽  
Wenyue Guo ◽  
Lanxin Zhou ◽  
...  

C-radical borylation is an significant approach for the construction of carbon−boron bond. Photochemical borylation of aryl halides successfully applied this strategy. However, precise mechanisms, such as the generation of aryl radicals and the role of base additive(TMDAM) and water, remain controversy in these reactions. In this study, photochemical borylation of aryl halides has been researched by density functional theory (DFT) calculations. Indeed, the homolytic cleavage of the C−X bond under irradiation with UV-light is a key step for generation of aryl radicals. Nevertheless, the generation of aryl radicals may also undergo the process of single electron transfer and the heterolytic carbon-halogen bond cleavage sequence, and the latter is favorable during the reaction.


Molecules ◽  
2020 ◽  
Vol 25 (10) ◽  
pp. 2367
Author(s):  
Francesca Nunzi ◽  
Giacomo Pannacci ◽  
Francesco Tarantelli ◽  
Leonardo Belpassi ◽  
David Cappelletti ◽  
...  

The nature, strength, range and role of the bonds in adducts of noble gas atoms with both neutral and ionic partners have been investigated by exploiting a fine-tuned integrated phenomenological–theoretical approach. The identification of the leading interaction components in the noble gases adducts and their modeling allows the encompassing of the transitions from pure noncovalent to covalent bound aggregates and to rationalize the anomalous behavior (deviations from noncovalent type interaction) pointed out in peculiar cases. Selected adducts affected by a weak chemical bond, as those promoting the formation of the intermolecular halogen bond, are also properly rationalized. The behavior of noble gas atoms excited in their long-life metastable states, showing a strongly enhanced reactivity, has been also enclosed in the present investigation.


2020 ◽  
Vol 59 (6) ◽  
pp. 4140-4149
Author(s):  
Giulia Bonfant ◽  
Matteo Melegari ◽  
Davide Balestri ◽  
Francesco Mezzadri ◽  
Vittoria Marzaroli ◽  
...  

2017 ◽  
Vol 203 ◽  
pp. 485-507 ◽  
Author(s):  
Lee Brammer

The role of the closing lecture in a Faraday Discussion is to summarise the contributions made to the Discussion over the course of the meeting and in so doing capture the main themes that have arisen. This article is based upon my Closing Remarks Lecture at the 203rdFaraday Discussion meeting on Halogen Bonding in Supramolecular and Solid State Chemistry, held in Ottawa, Canada, on 10–12thJuly, 2017. The Discussion included papers on fundamentals and applications of halogen bonding in the solid state and solution phase. Analogous interactions involving main group elements outside group 17 were also examined. In the closing lecture and in this article these contributions have been grouped into the four themes: (a) fundamentals, (b) beyond the halogen bond, (c) characterisation, and (d) applications. The lecture and paper also include a short reflection on past work that has a bearing on the Discussion.


2022 ◽  
Author(s):  
Mrinal Kanti Si

Abstract The 2019-nCoV virus is a human-infectious coronavirus (CoV). Very few treatment options are available to healthcare professionals who are fighting this outbreak at the front. The main warning symptoms of COVID-19, the disease caused by the new coronavirus, are fever, fatigue, and a dry cough, sometimes it also causes cold-like symptoms like a runny nose which are sometimes similar to symptoms of allergies and sometimes difficult to differentiate between COVID-19 and allergies. The anti-allergic drug molecules can behave as good inhibitor against COVID-19. Molecular docking studies have been performed to examine the inhibitor properties of anti-allergic molecules against Covid-19. The searching of better inhibitors have been examined interns of various non-covalent interactions like hydrogen bond, halogen bond, vander waal’s interactions, alkyl-πand π-π interactions between small molecules (Anti-allergic medicines) with main protease of Covid-19 using molecular docking and Molecular Dynamics simulation which reveals that astemizole is best inhibitor among ten Anti-allergic drug molecules.


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