Research output: Contribution to journal › Article › peer-review
The Distance between Minima of Electron Density and Electrostatic Potential as a Measure of Halogen Bond Strength. / Чакалов, Эдем Рустемович; Тупикина, Елена Юрьевна; Иванов, Даниил Михайлович; Барташевич, Екатерина Владимировна; Толстой, Петр Михайлович.
In: Molecules, Vol. 27, No. 15, 4848, 08.2022.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - The Distance between Minima of Electron Density and Electrostatic Potential as a Measure of Halogen Bond Strength
AU - Чакалов, Эдем Рустемович
AU - Тупикина, Елена Юрьевна
AU - Иванов, Даниил Михайлович
AU - Барташевич, Екатерина Владимировна
AU - Толстой, Петр Михайлович
N1 - Publisher Copyright: © 2022 by the authors.
PY - 2022/8
Y1 - 2022/8
N2 - In this study, we present results of a detailed topological analysis of electron density (ED) of 145 halogen-bonded complexes formed by various fluorine-, chlorine-, bromine-, and iodine-containing compounds with trimethylphosphine oxide, Me 3PO. To characterize the halogen bond (XB) strength, we used the complexation enthalpy, the interatomic distance between oxygen and halogen, as well as the typical set of electron density properties at the bond critical points calculated at B3LYP/jorge-ATZP level of theory. We show for the first time that it is possible to predict the XB strength based on the distance between the minima of ED and molecular electrostatic potential (ESP) along the XB path. The gap between ED and ESP minima exponentially depends on local electronic kinetic energy density at the bond critical point and tends to be a common limiting value for the strongest halogen bond.
AB - In this study, we present results of a detailed topological analysis of electron density (ED) of 145 halogen-bonded complexes formed by various fluorine-, chlorine-, bromine-, and iodine-containing compounds with trimethylphosphine oxide, Me 3PO. To characterize the halogen bond (XB) strength, we used the complexation enthalpy, the interatomic distance between oxygen and halogen, as well as the typical set of electron density properties at the bond critical points calculated at B3LYP/jorge-ATZP level of theory. We show for the first time that it is possible to predict the XB strength based on the distance between the minima of ED and molecular electrostatic potential (ESP) along the XB path. The gap between ED and ESP minima exponentially depends on local electronic kinetic energy density at the bond critical point and tends to be a common limiting value for the strongest halogen bond.
KW - P NMR
KW - QTAIM
KW - bond strength
KW - density functional theory
KW - electron density
KW - electrostatic potential
KW - halogen bond
KW - interaction energy
KW - phosphine oxide
KW - 31P NMR
UR - http://www.scopus.com/inward/record.url?scp=85136748948&partnerID=8YFLogxK
UR - https://www.mendeley.com/catalogue/3247510b-3a7b-3989-8f2f-fe6095c4a1cc/
U2 - 10.3390/molecules27154848
DO - 10.3390/molecules27154848
M3 - Article
C2 - 35956799
VL - 27
JO - Molecules
JF - Molecules
SN - 1420-3049
IS - 15
M1 - 4848
ER -
ID: 100015626