Steric and Electronic Effects in the Host-Guest Hydrogen Bonding in Clathrate Hydrates
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F11%3A00371775" target="_blank" >RIV/61388955:_____/11:00371775 - isvavai.cz</a>
Výsledek na webu
<a href="http://dx.doi.org/10.1021/jp111245z" target="_blank" >http://dx.doi.org/10.1021/jp111245z</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/jp111245z" target="_blank" >10.1021/jp111245z</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Steric and Electronic Effects in the Host-Guest Hydrogen Bonding in Clathrate Hydrates
Popis výsledku v původním jazyce
Clathrate hydrates with polar guest molecules (dimethyl ether, ethylene oxide, trimethylene oxide, tetrahydrofuran, and tetrahydropyran) were studied by means of the density functional theory. A model of a large cage of structure-I clathrate was employed. Optimal configurations of encaged guests were investigated with a focus on the host-guest hydrogen bond formation. Weak hydrogen bonds were found to be formed by each guest, while for THP a strong hydrogen bond and formation of L-defect was also observed. This is in accord with previous computational and experimental studies. Steric factors were shown to play a key role for the strength of the hydrogen bond formed. Interestingly, the host-guest binding is influenced not only by the size of a guest molecule but also by its shape. This work demonstrates that both electronic and steric properties of a polar guest should be considered for a full description of clathrate systems.
Název v anglickém jazyce
Steric and Electronic Effects in the Host-Guest Hydrogen Bonding in Clathrate Hydrates
Popis výsledku anglicky
Clathrate hydrates with polar guest molecules (dimethyl ether, ethylene oxide, trimethylene oxide, tetrahydrofuran, and tetrahydropyran) were studied by means of the density functional theory. A model of a large cage of structure-I clathrate was employed. Optimal configurations of encaged guests were investigated with a focus on the host-guest hydrogen bond formation. Weak hydrogen bonds were found to be formed by each guest, while for THP a strong hydrogen bond and formation of L-defect was also observed. This is in accord with previous computational and experimental studies. Steric factors were shown to play a key role for the strength of the hydrogen bond formed. Interestingly, the host-guest binding is influenced not only by the size of a guest molecule but also by its shape. This work demonstrates that both electronic and steric properties of a polar guest should be considered for a full description of clathrate systems.
Klasifikace
Druh
J<sub>x</sub> - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
CEP obor
CF - Fyzikální chemie a teoretická chemie
OECD FORD obor
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Návaznosti výsledku
Projekt
—
Návaznosti
Z - Vyzkumny zamer (s odkazem do CEZ)
Ostatní
Rok uplatnění
2011
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Journal of Physical Chemistry A
ISSN
1089-5639
e-ISSN
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Svazek periodika
115
Číslo periodika v rámci svazku
23
Stát vydavatele periodika
US - Spojené státy americké
Počet stran výsledku
6
Strana od-do
6149-6154
Kód UT WoS článku
000291338800048
EID výsledku v databázi Scopus
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