Force field parametrization of hydrogenoxalate and oxalate anions with scaled charges

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12310%2F17%3A43895658" target="_blank" >RIV/60076658:12310/17:43895658 - isvavai.cz</a>
Alternative codes found
RIV/00216305:26310/17:PU136188
Result on the web
<a href="https://link.springer.com/article/10.1007%2Fs00894-017-3490-x" target="_blank" >https://link.springer.com/article/10.1007%2Fs00894-017-3490-x</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s00894-017-3490-x" target="_blank" >10.1007/s00894-017-3490-x</a>

Result language
angličtina
Original language name
Force field parametrization of hydrogenoxalate and oxalate anions with scaled charges
Original language description
Models of the hydrogenoxalate (bioxalate, charge -1) and oxalate (charge -2) anions were developed for classical molecular dynamics (CMD) simulations and parametrized against ab initio molecular dynamics (AIMD) data from our previous study (Kroutil et al. (2016) J Mol Model 22: 210). The interactions of the anions with water were described using charges scaled according to the electronic continuum correction approach with rescaling of nonbonded parameters (ECCR), and those descriptions of anion interactions were found to agree well with relevant AIMD and experimental results. The models with full RESP charges showed excessively strong electrostatic interactions between the solute and water molecules, leading to an overstructured solvation shell around the anions and thus to a diffusion coefficient that was much too low. The effect of charge scaling was more evident for the oxalate dianion than for the hydrogenoxalate anion. Our work provides CMD models for ions of oxalic acid and extends previous studies that showed the importance of ECCR for modeling divalent ions and ions of organic compounds.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10403 - Physical chemistry

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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