The Origin of the σ‐Hole in Halogen Atoms: a Valence Bond Perspective

Abstract A detailed Valence Bond‐Spin Coupled analysis of a series of halogenated molecules is here reported, allowing to get a rigorous ab initio demonstration of the qualitative models previously proposed to explain the origin of halogen bonding. The concepts of σ‐hole and negative belt observed a...

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Main Authors: Dr. Davide Franchini, Dr. Alessandra Forni, Dr. Alessandro Genoni, Prof. Stefano Pieraccini, Dr. Enrico Gandini, Prof. Maurizio Sironi
Format: Article
Language:English
Published: Wiley-VCH 2020-04-01
Series:ChemistryOpen
Subjects:
Online Access:https://doi.org/10.1002/open.202000062
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author Dr. Davide Franchini
Dr. Alessandra Forni
Dr. Alessandro Genoni
Prof. Stefano Pieraccini
Dr. Enrico Gandini
Prof. Maurizio Sironi
author_facet Dr. Davide Franchini
Dr. Alessandra Forni
Dr. Alessandro Genoni
Prof. Stefano Pieraccini
Dr. Enrico Gandini
Prof. Maurizio Sironi
author_sort Dr. Davide Franchini
collection DOAJ
description Abstract A detailed Valence Bond‐Spin Coupled analysis of a series of halogenated molecules is here reported, allowing to get a rigorous ab initio demonstration of the qualitative models previously proposed to explain the origin of halogen bonding. The concepts of σ‐hole and negative belt observed around the halogen atoms in the electrostatic potential maps are here interpreted by analysis of the relevant Spin Coupled orbitals.
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spelling doaj.art-387024ba834a40db9c1058a162dff3532022-12-21T19:04:17ZengWiley-VCHChemistryOpen2191-13632020-04-019444545010.1002/open.202000062The Origin of the σ‐Hole in Halogen Atoms: a Valence Bond PerspectiveDr. Davide Franchini0Dr. Alessandra Forni1Dr. Alessandro Genoni2Prof. Stefano Pieraccini3Dr. Enrico Gandini4Prof. Maurizio Sironi5Department of Chemistry Università degli Studi di Milano and INSTM RU via Golgi 19 20133 Milano ItalySCITEC-CNR via Golgi 19 20133 Milano ItalyUniversité de Lorraine and CNRS Laboratoire de Physique et Chimie Théoriques (LPCT) UMR CNRS 7019 1 Boulevard Arago Metz 57078 FranceDepartment of Chemistry Università degli Studi di Milano and INSTM RU via Golgi 19 20133 Milano ItalyDepartment of Chemistry Università degli Studi di Milano and INSTM RU via Golgi 19 20133 Milano ItalyDepartment of Chemistry Università degli Studi di Milano and INSTM RU via Golgi 19 20133 Milano ItalyAbstract A detailed Valence Bond‐Spin Coupled analysis of a series of halogenated molecules is here reported, allowing to get a rigorous ab initio demonstration of the qualitative models previously proposed to explain the origin of halogen bonding. The concepts of σ‐hole and negative belt observed around the halogen atoms in the electrostatic potential maps are here interpreted by analysis of the relevant Spin Coupled orbitals.https://doi.org/10.1002/open.202000062halogen bondingvalence bond theoryspin-coupled methodintermolecular interactionsquantum mechanics
spellingShingle Dr. Davide Franchini
Dr. Alessandra Forni
Dr. Alessandro Genoni
Prof. Stefano Pieraccini
Dr. Enrico Gandini
Prof. Maurizio Sironi
The Origin of the σ‐Hole in Halogen Atoms: a Valence Bond Perspective
ChemistryOpen
halogen bonding
valence bond theory
spin-coupled method
intermolecular interactions
quantum mechanics
title The Origin of the σ‐Hole in Halogen Atoms: a Valence Bond Perspective
title_full The Origin of the σ‐Hole in Halogen Atoms: a Valence Bond Perspective
title_fullStr The Origin of the σ‐Hole in Halogen Atoms: a Valence Bond Perspective
title_full_unstemmed The Origin of the σ‐Hole in Halogen Atoms: a Valence Bond Perspective
title_short The Origin of the σ‐Hole in Halogen Atoms: a Valence Bond Perspective
title_sort origin of the σ hole in halogen atoms a valence bond perspective
topic halogen bonding
valence bond theory
spin-coupled method
intermolecular interactions
quantum mechanics
url https://doi.org/10.1002/open.202000062
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