Potential energy surfaces of antiparallel water-water interactions
Само за регистроване кориснике
2023
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Antiparallel water-water interaction is a significant interaction between two water molecules and plays an important role in liquid water. The potential energy surface of antiparallel water-water interaction was calculated at accurate CCSD(T)/CBS level of theory by systematic changes of the torsion angle THOHO, parallel displacement r, normal distance R, and water-water dihedral angle Pa/Pb. The results show that the most stable geometry of antiparallel water-water interaction has an interaction energy of −4.22 kcal/mol and THOHO = 140°. A significant portion of the antiparallel interactions have interaction energies more negative than −2.0 kcal/mol. The angle α of the most stable geometries of antiparallel water-water interactions is in the range 110°–120°. Comparison with classical hydrogen bonds in water dimers shows that hydrogen bonds with values of angle α < 140° have interaction energies up to −3.2 kcal/mol, while a significant number of antiparallel water-water interactions is ...stronger than it. The antiparallel geometry is a low barrier transition state between two hydrogen bonded minima with changed acceptor–donor roles of two water molecules.
Извор:
Journal of Molecular Liquids, 2023, 389, 122758-Издавач:
- Elsevier
Финансирање / пројекти:
- Нековалентне интеракције pi-система и њихова улога у молекулском препознавању (RS-MESTD-Basic Research (BR or ON)-172065)
Колекције
Институција/група
Inovacioni centar / Innovation CentreTY - JOUR AU - Milovanović, Milan R. AU - Živković, Jelena M. AU - Ninković, Dragan AU - Zarić, Snežana D. PY - 2023 UR - http://cherry.chem.bg.ac.rs/handle/123456789/6281 AB - Antiparallel water-water interaction is a significant interaction between two water molecules and plays an important role in liquid water. The potential energy surface of antiparallel water-water interaction was calculated at accurate CCSD(T)/CBS level of theory by systematic changes of the torsion angle THOHO, parallel displacement r, normal distance R, and water-water dihedral angle Pa/Pb. The results show that the most stable geometry of antiparallel water-water interaction has an interaction energy of −4.22 kcal/mol and THOHO = 140°. A significant portion of the antiparallel interactions have interaction energies more negative than −2.0 kcal/mol. The angle α of the most stable geometries of antiparallel water-water interactions is in the range 110°–120°. Comparison with classical hydrogen bonds in water dimers shows that hydrogen bonds with values of angle α < 140° have interaction energies up to −3.2 kcal/mol, while a significant number of antiparallel water-water interactions is stronger than it. The antiparallel geometry is a low barrier transition state between two hydrogen bonded minima with changed acceptor–donor roles of two water molecules. PB - Elsevier T2 - Journal of Molecular Liquids T1 - Potential energy surfaces of antiparallel water-water interactions VL - 389 SP - 122758 DO - 10.1016/j.molliq.2023.122758 ER -
@article{ author = "Milovanović, Milan R. and Živković, Jelena M. and Ninković, Dragan and Zarić, Snežana D.", year = "2023", abstract = "Antiparallel water-water interaction is a significant interaction between two water molecules and plays an important role in liquid water. The potential energy surface of antiparallel water-water interaction was calculated at accurate CCSD(T)/CBS level of theory by systematic changes of the torsion angle THOHO, parallel displacement r, normal distance R, and water-water dihedral angle Pa/Pb. The results show that the most stable geometry of antiparallel water-water interaction has an interaction energy of −4.22 kcal/mol and THOHO = 140°. A significant portion of the antiparallel interactions have interaction energies more negative than −2.0 kcal/mol. The angle α of the most stable geometries of antiparallel water-water interactions is in the range 110°–120°. Comparison with classical hydrogen bonds in water dimers shows that hydrogen bonds with values of angle α < 140° have interaction energies up to −3.2 kcal/mol, while a significant number of antiparallel water-water interactions is stronger than it. The antiparallel geometry is a low barrier transition state between two hydrogen bonded minima with changed acceptor–donor roles of two water molecules.", publisher = "Elsevier", journal = "Journal of Molecular Liquids", title = "Potential energy surfaces of antiparallel water-water interactions", volume = "389", pages = "122758", doi = "10.1016/j.molliq.2023.122758" }
Milovanović, M. R., Živković, J. M., Ninković, D.,& Zarić, S. D.. (2023). Potential energy surfaces of antiparallel water-water interactions. in Journal of Molecular Liquids Elsevier., 389, 122758. https://doi.org/10.1016/j.molliq.2023.122758
Milovanović MR, Živković JM, Ninković D, Zarić SD. Potential energy surfaces of antiparallel water-water interactions. in Journal of Molecular Liquids. 2023;389:122758. doi:10.1016/j.molliq.2023.122758 .
Milovanović, Milan R., Živković, Jelena M., Ninković, Dragan, Zarić, Snežana D., "Potential energy surfaces of antiparallel water-water interactions" in Journal of Molecular Liquids, 389 (2023):122758, https://doi.org/10.1016/j.molliq.2023.122758 . .