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Abstract
Intermolecular interactions such as those present in molecule···water complexes may profoundly influence the physicochemical properties of molecules. Here, we carried out an experimental–computational study on doubly deprotonated guanosine monophosphate···water clusters, [dGMP – 2H]2–·nH2O (n = 1–4), using a combination of negative anion photoelectron spectroscopy (NIPES) with molecular dynamics (MD) and quantum chemical (QM) calculations. Successive addition of water molecules to [dGMP – 2H]2– increases the experimental adiabatic detachment (ADE) and vertical detachment energy (VDE) by 0.5–0.1 eV, depending on the cluster size. In order to choose the representative conformations, we combined MD simulations with a clustering procedure to identify low energy geometries for which ADEs and VDEs were computed at the CAM-B3LYP/6-31++G(d,p) level. Our results demonstrate that the assumed approach leads to sound geometries and energetics of the studied microsolvates since the calculated ADEs and VDEs are in pretty good agreement with the experimental characteristics. The evolution of hydrogen bonding with cluster size indicates the possibility of the occurrence of proton transfer for clusters comprising a larger number of water molecules.
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Authors (7)
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Samanta Makurat Mgr.
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Qinqin Yuan
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Lidia Chomicz-Mańka
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Wenjin Cao
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Xue-Bin Wang
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Janusz Rak
Cite as
Full text
- Publication version
- Accepted or Published Version
- DOI:
- Digital Object Identifier (open in new tab) 10.1021/acs.jpclett.2c00512
- License
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Keywords
Details
- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
-
Journal of Physical Chemistry Letters
no. 13,
pages 3230 - 3236,
ISSN: 1948-7185 - Language:
- English
- Publication year:
- 2022
- Bibliographic description:
- Makurat S., Yuan Q., Czub J., Chomicz-Mańka L., Cao W., Wang X., Rak J.: Guanosine Dianions Hydrated by One to Four Water Molecules// Journal of Physical Chemistry Letters -Vol. 13,iss. 14 (2022), s.3230-3236
- DOI:
- Digital Object Identifier (open in new tab) 10.1021/acs.jpclett.2c00512
- Sources of funding:
-
- COST_FREE
- Verified by:
- Gdańsk University of Technology
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