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@ARTICLE{Xie:631476,
author = {Xie, Fan and Mendolicchio, Marco and Omarouayache, Wafaa
and Murugachandran, S. Indira and Lei, Juncheng and Gou,
Qian and Sanz, Maria Eugenia and Barone, Vincenzo and
Schnell, Melanie},
title = {{S}tructural and {E}lectronic {E}volution of {E}thanolamine
upon {M}icrohydration: {I}nsights from {H}yperfine
{R}esolved {R}otational {S}pectroscopy},
journal = {Angewandte Chemie},
volume = {136},
number = {40},
issn = {0932-2132},
address = {Weinheim},
publisher = {Wiley-VCH},
reportid = {PUBDB-2025-01988},
pages = {e202408622},
year = {2024},
abstract = {Ethanolamine hydrates containing from one to seven water
molecules were identified via rotational spectroscopy with
the aid of accurate quantum chemical methods considering
anharmonic vibrational corrections. Ethanolamine undergoes
significant conformational changes upon hydration to form
energetically favorable hydrogen bond networks. The final
structures strongly resemble the pure (H$_2$O)$_{3–9}$
complexes reported before when replacing two water molecules
by ethanolamine. The $^{14}$N nuclear quadrupole coupling
constants of all the ethanolamine hydrates have been
determined and show a remarkable correlation with the
strength of hydrogen bonds involving the amino group. After
addition of the seventh water molecule, both hydrogen atoms
of the amino group actively contribute to hydrogen bond
formation, reinforcing the network and introducing
approximately 21–27 \% ionicity towards the formation of
protonated amine. These findings highlight the critical role
of microhydration in altering the electronic environment of
ethanolamine, enhancing our understanding of amine hydration
dynamics.},
cin = {FS-SMP},
ddc = {660},
cid = {I:(DE-H253)FS-SMP-20171124},
pnm = {631 - Matter – Dynamics, Mechanisms and Control
(POF4-631) / DFG project G:(GEPRIS)255533046 - SPP 1807:
Control of London Dispersion Interactions in Molecular
Chemistry (255533046)},
pid = {G:(DE-HGF)POF4-631 / G:(GEPRIS)255533046},
experiment = {EXP:(DE-MLZ)NOSPEC-20140101},
typ = {PUB:(DE-HGF)16},
doi = {10.1002/ange.202408622},
url = {https://bib-pubdb1.desy.de/record/631476},
}