Can We Merge the Weak and Strong Tetrel Bonds? Electronic Features of Tetrahedral Molecules Interacted with Halide Anions

Overview

Journal Molecules

Publisher MDPI

Specialty Biology

Date 2022 Sep 9

PMID 36080180

Authors

Ekaterina V Bartashevich

Svetlana E Mukhitdinova

Iliya V Klyuev

Vladimir G Tsirelson

Affiliations

Soon will be listed here.

Abstract

Using the orbital-free quantum crystallography approach, we have disclosed the quantitative trends in electronic features for bonds of different strengths formed by tetrel (Tt) atoms in stable molecular complexes consisting of electrically neutral tetrahedral molecules and halide anions. We have revealed the role of the electrostatic and exchange-correlation components of the total one-electron static potential that are determined by the equilibrium atomic structure and by kinetic Pauli potential, which reflects the spin-dependent electron motion features of the weak and strong bonds. The gap between the extreme positions in the electrostatic and total static potentials along the line linking the Tt atom and halide anion is wide for weak bonds and narrow for strong ones. It is in very good agreement with the number of minima in the Pauli potential between the bounded atoms. This gap exponentially correlates with the exchange-correlation potential in various series with a fixed nucleophilic fragment. A criterion for categorizing the noncovalent tetrel bonds (TtB) based on the potential features is suggested.

Citing Articles

Tetrel Bonding in Anion Recognition: A First Principles Investigation.

Varadwaj P Molecules. 2022; 27(23).

PMID: 36500544 PMC: 9738195. DOI: 10.3390/molecules27238449.

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