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Title: Chemical Bonding and the Role of Node-Induced Electron Confinement

Journal Article · · Journal of the American Chemical Society

The chemical bond is the cornerstone of chemistry, providing a conceptual framework to understand and predict the behavior of molecules in complex systems. However, the fundamental origin of chemical bonding remains controversial and has been responsible for fierce debate over the past century. Here, in this study, we present a unified theory of bonding, using a separation of electron delocalization effects from orbital relaxation to identify three mechanisms [node-induced confinement (typically associated with Pauli repulsion, though more general), orbital contraction, and polarization] that each modulate kinetic energy during bond formation. Through analysis of a series of archetypal bonds, we show that an exquisite balance of energy-lowering delocalizing and localizing effects are dictated simply by atomic electron configurations, nodal structure, and electronegativities. The utility of this unified bonding theory is demonstrated by its application to explain observed trends in bond strengths throughout the periodic table, including main group and transition metal elements.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
National Science Foundation (NSF); USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR). Scientific Discovery through Advanced Computing (SciDAC); USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences & Biosciences Division (CSGB)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
2472916
Journal Information:
Journal of the American Chemical Society, Journal Name: Journal of the American Chemical Society Journal Issue: 14 Vol. 146; ISSN 0002-7863
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

References (53)

Über Molekülbildung als Frage des Atombaus journal January 1916
The Physical Mechanism of the Chemical Bond journal July 1973
Charge‐Shift Bonding: A New and Unique Form of Bonding journal November 2019
Understanding the Uniqueness of 2p Elements in Periodic Tables journal November 2020
The Chemical Bond: When Atom Size Instead of Electronegativity Difference Determines Trend in Bond Strength journal October 2021
The role of radial nodes of atomic orbitals for chemical bonding and the periodic table journal January 2006
Zur Rolle der kinetischen Elektronenenergie f�r die zwischenatomaren Kr�fte journal March 1933
Wechselwirkung neutraler Atome und hom�opolare Bindung nach der Quantenmechanik journal June 1927
Kinetic Energy and the Covalent Bond in H2+ journal March 2005
Excited states of Li2+ journal June 1976
Electronegativity values from thermochemical data journal June 1961
The arrangement of electrons in atoms and molecules journal March 1919
Chemical Bonding and Bonding Models of Main-Group Compounds journal June 2019
Variational Energy Decomposition Analysis of Chemical Bonding. 1. Spin-Pure Analysis of Single Bonds journal September 2016
Multiple Bonding in Rhodium Monoboride. Quasi-atomic Analyses of the Ground and Low-Lying Excited States journal May 2021
A Comprehensive Analysis in Terms of Molecule-Intrinsic, Quasi-Atomic Orbitals. II. Strongly Correlated MCSCF Wave Functions journal October 2015
A Comprehensive Analysis in Terms of Molecule-Intrinsic, Quasi-Atomic Orbitals. III. The Covalent Bonding Structure of Urea journal October 2015
A Comprehensive Analysis in Terms of Molecule-Intrinsic Quasi-Atomic Orbitals. IV. Bond Breaking and Bond Forming along the Dissociative Reaction Path of Dioxetane journal October 2015
Intrinsic Resolution of Molecular Electronic Wave Functions and Energies in Terms of Quasi-atoms and Their Interactions journal January 2017
Identification and Characterization of Molecular Bonding Structures by ab initio Quasi-Atomic Orbital Analyses journal November 2017
Quasi-Atomic Bonding Analysis of Xe-Containing Compounds journal March 2018
A Quasi-Atomic Analysis of Three-Center Two-Electron Zr–H–Si Interactions journal November 2018
Quasi-Atomic Bond Analyses in the Sixth Period: II. Bond Analyses of Cerium Oxides journal June 2019
Quantifying the Role of Orbital Contraction in Chemical Bonding journal April 2017
Intrinsic Atomic Orbitals: An Unbiased Bridge between Quantum Theory and Chemical Concepts journal October 2013
Some Observations on Molecular Orbital Theory journal August 2005
Chemical properties from the promolecule journal May 1986
The Nature of the Chemical Bond. Application of Results Obtained from the Quantum Mechanics and from a Theory of Paramagnetic Susceptibility to the Structure of Molecules journal April 1931
The atom and the Molecule. journal April 1916
No-Pair Bonding in the High-Spin 3 State of Li2. A Valence Bond Study of Its Origins journal March 1999
Why is Si 2 H 2 Not Linear? An Intrinsic Quasi-Atomic Bonding Analysis journal July 2020
Periodic Trends in Bond Dissociation Energies. A Theoretical Study journal April 2005
Worlds Apart in Chemistry: A Personal Tribute to J. C. Slater journal November 2011
Clarifying the quantum mechanical origin of the covalent chemical bond journal September 2020
The role of references and the elusive nature of the chemical bond journal June 2022
The physical origin of large covalent–ionic resonance energies in some two-electron bonds journal January 2007
Virial Theorem for Polyatomic Molecules journal July 1962
The Virial and Molecular Structure journal October 1933
The Feynman Lectures on Physics, Vol. 3: Quantum Mechanics journal November 1966
Gaussian basis sets for use in correlated molecular calculations. I. The atoms boron through neon and hydrogen journal January 1989
Covalent bonds are created by the drive of electron waves to lower their kinetic energy through expansion journal May 2014
Polarization contributions to intermolecular interactions revisited with fragment electric-field response functions journal September 2015
ω B97M-V: A combinatorially optimized, range-separated hybrid, meta-GGA density functional with VV10 nonlocal correlation journal June 2016
Software for the frontiers of quantum chemistry: An overview of developments in the Q-Chem 5 package journal August 2021
Orbital contraction and covalent bonding journal May 2022
Atoms and bonds in molecules as synergisms of interactions between electrons and nuclei journal December 2022
Energy decomposition analysis of single bonds within Kohn–Sham density functional theory journal November 2017
Electrostatic binding in the first-row AH and A 2 diatomic molecules journal May 1974
Forces in Molecules journal August 1939
The Physical Nature of the Chemical Bond journal April 1962
From Intermolecular Interaction Energies and Observable Shifts to Component Contributions and Back Again: A Tale of Variational Energy Decomposition Analysis journal April 2021
Comprehensive Handbook of Chemical Bond Energies book March 2007
The Basics of Covalent Bonding in Terms of Energy and Dynamics journal June 2020