An insight into hydration structure of sodium glycinate from ab initio quantum chemical study

Verfasser / Beitragende:
[Dong Chen, Zhichao Wei, Bo Liu]
Ort, Verlag, Jahr:
2015
Enthalten in:
Journal of Molecular Modeling, 21/9(2015-09-01), 1-9
Format:
Artikel (online)
ID: 605511160
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024 7 0 |a 10.1007/s00894-015-2781-3  |2 doi 
035 |a (NATIONALLICENCE)springer-10.1007/s00894-015-2781-3 
245 0 3 |a An insight into hydration structure of sodium glycinate from ab initio quantum chemical study  |h [Elektronische Daten]  |c [Dong Chen, Zhichao Wei, Bo Liu] 
520 3 |a The hydration structure of sodium glycinate (Na+GL−) is probed by the Monte-Carlo multiple minimum (MCMM) method combined with quantum mechanical (QM) calculations at the MP2/6-311++G(d,p) level. In the gas phase, the energy of [Na+GL−]β is more than 30 kJ mol−1 higher than [Na+GL−]α. With higher degrees of hydration, our results indicate that the most stable conformers of [Na+GL−]∙(H2O)8 were derived from [Na+GL−]β instead of [Na+GL−]α. The stable conformers determined by the conductor-like polarizable continuum model (CPCM) also show that [Na+GL−]β is more stable than [Na+GL−]α in the liquid phase. By analyzing the hydration process, water water hydrogen bonding interaction will be more preferable than ion water interaction as the number of water molecules increases. According to the electronic density at the bond critical point on the Na-X bonds (X = O1, O2, N) in the low-energy conformers, Na+GL− will be dissociated as Na+ and GL− in the bulk water, which is not predicted by the CPCM model. The structure features and the charge redistribution of Na+GL− will provide a physical explanation for the weakening Na-O1 interaction. Graphical Abstract Hydration structure of sodium glycinate from ab initio quantum chemical study 
540 |a Springer-Verlag Berlin Heidelberg, 2015 
690 7 |a CPCM model  |2 nationallicence 
690 7 |a Hybrid MCMM/QM method  |2 nationallicence 
690 7 |a Hydration structure  |2 nationallicence 
690 7 |a Micro-hydration process  |2 nationallicence 
700 1 |a Chen  |D Dong  |u Institute of Photo-Biophysics, Physics and Electronics Department, Henan University, 475004, Kaifeng, China  |4 aut 
700 1 |a Wei  |D Zhichao  |u Institute of Photo-Biophysics, Physics and Electronics Department, Henan University, 475004, Kaifeng, China  |4 aut 
700 1 |a Liu  |D Bo  |u Institute of Photo-Biophysics, Physics and Electronics Department, Henan University, 475004, Kaifeng, China  |4 aut 
773 0 |t Journal of Molecular Modeling  |d Springer Berlin Heidelberg  |g 21/9(2015-09-01), 1-9  |x 1610-2940  |q 21:9<1  |1 2015  |2 21  |o 894 
856 4 0 |u https://doi.org/10.1007/s00894-015-2781-3  |q text/html  |z Onlinezugriff via DOI 
898 |a BK010053  |b XK010053  |c XK010000 
900 7 |a Metadata rights reserved  |b Springer special CC-BY-NC licence  |2 nationallicence 
908 |D 1  |a research-article  |2 jats 
949 |B NATIONALLICENCE  |F NATIONALLICENCE  |b NL-springer 
950 |B NATIONALLICENCE  |P 856  |E 40  |u https://doi.org/10.1007/s00894-015-2781-3  |q text/html  |z Onlinezugriff via DOI 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Chen  |D Dong  |u Institute of Photo-Biophysics, Physics and Electronics Department, Henan University, 475004, Kaifeng, China  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Wei  |D Zhichao  |u Institute of Photo-Biophysics, Physics and Electronics Department, Henan University, 475004, Kaifeng, China  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Liu  |D Bo  |u Institute of Photo-Biophysics, Physics and Electronics Department, Henan University, 475004, Kaifeng, China  |4 aut 
950 |B NATIONALLICENCE  |P 773  |E 0-  |t Journal of Molecular Modeling  |d Springer Berlin Heidelberg  |g 21/9(2015-09-01), 1-9  |x 1610-2940  |q 21:9<1  |1 2015  |2 21  |o 894