desolvation mechanism
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CrystEngComm ◽  
2021 ◽  
Author(s):  
Pingping Cui ◽  
Qiuxiang Yin ◽  
Shihao Zhang ◽  
Wenchao Yang ◽  
Li Hong Jia ◽  
...  

Amoxicillin sodium heterosolvates, including SM-M (methanol–methyl acetate solvate), SE-M (ethanol–methyl acetate solvate), and SM-E (methanol–ethyl acetate solvate), were obtained for the first time in this work. The single crystal of...


2018 ◽  
Vol 115 (4) ◽  
pp. 656-661 ◽  
Author(s):  
Mark N. Joswiak ◽  
Michael F. Doherty ◽  
Baron Peters

Desolvation barriers are present for solute–solvent exchange events, such as ligand binding to an enzyme active site, during protein folding, and at battery electrodes. For solution-grown crystals, desolvation at kink sites can be the rate-limiting step for growth. However, desolvation and the associated kinetic barriers are poorly understood. In this work, we use rare-event simulation techniques to investigate attachment/detachment events at kink sites of a NaCl crystal in water. We elucidate the desolvation mechanism and present an optimized reaction coordinate, which involves one solute collective variable and one solvent collective variable. The attachment/detachment pathways for Na+ and Cl− are qualitatively similar, with quantitative differences that we attribute to different ion sizes and solvent coordination. The attachment barriers primarily result from kink site desolvation, while detachment barriers largely result from breaking ion–crystal bonds. We compute ion detachment rates from kink sites and compare with results from an independent study. We anticipate that the reaction coordinate and desolvation mechanism identified in this work may be applicable to other alkali halides.


2017 ◽  
Vol 17 (11) ◽  
pp. 5712-5724 ◽  
Author(s):  
Agris Be̅rziņš ◽  
Aija Trimdale ◽  
Artis Kons ◽  
Dace Zvaniņa

2015 ◽  
Vol 17 (38) ◽  
pp. 25550-25562 ◽  
Author(s):  
Mahmoud Sharawy ◽  
Styliani Consta

We present the desolvation mechanism of a double-stranded oligodeoxynucleotide (dsDNA) from an aqueous nanodrop studied by using atomistic molecular dynamics methods.


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