Issue 36, 2021

Yet another perspective on hole interactions

Abstract

Hole interactions are known by different names depending on the key atom of the bond (halogen bond, chalcogen bond, hydrogen bond, etc.), and the geometry of the interaction (σ if in line, π if perpendicular to the Lewis acid plane). However, its origin starts with the creation of a Lewis acid by an underlying covalent bond, which forms an electrostatic depletion and a virtual antibonding orbital, which can create non-covalent interactions with Lewis bases. In this (maybe subjective) perspective, we will claim that hole interactions must be defined via the molecular orbital origin of the molecule. Under this premise we can better explore the richness of such bonding patterns. For that, we will study old, recent and new systems, trying to pinpoint some misinterpretations that are often associated with them. We will use as exemplars the triel bonds, a couple of metal complexes, a discussion on convergent σ-holes, and many cases of anti-electrostatic hole interactions.

Graphical abstract: Yet another perspective on hole interactions

Article information

Article type
Perspective
Submitted
01 août 2021
Accepted
27 août 2021
First published
27 août 2021

Phys. Chem. Chem. Phys., 2021,23, 19948-19963

Yet another perspective on hole interactions

N. Tarannam, R. Shukla and S. Kozuch, Phys. Chem. Chem. Phys., 2021, 23, 19948 DOI: 10.1039/D1CP03533A

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