Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Orbitals and the Interpretation of Photoelectron Spectroscopy and (e,2e) Ionization Experiments

Journal Article · · Angewandte Chemie (International Edition)
 [1];  [2];  [3];  [4];  [3]
  1. Department of Chemistry Chemical Theory Center, and Minnesota Supercomputing Institute University of Minnesota 207 Pleasant St. SE Minneapolis MN 55455-0431 USA
  2. Laboratoire de Chimie Physique, CNRS UMR8000, Bat. 349 Université de Paris-Sud 91405 Orsay Cédex France
  3. Institute of Chemistry The Hebrew University of Jerusalem Givant-Ram Campus Jerusalem 9190407 Israel
  4. Department of Chemistry Iowa State University and Ames Laboratory Ames IA 50014 USA

Abstract

Electron momentum spectroscopy, scanning tunneling microscopy, and photoelectron spectroscopy provide unique information about electronic structure, but their interpretation has been controversial. This essay discusses a framework for interpretation. Although this interpretation is not new, we believe it is important to present this framework in light of recent publications. The key point is that these experiments provide information about how the electron distribution changes upon ionization, not how electrons behave in the pre‐ionized state. Therefore, these experiments do not lead to a “selection of the correct orbitals” in chemistry and do not overturn the well‐known conclusion that both delocalized molecular orbitals and localized molecular orbitals are useful for interpreting chemical structure and dynamics. The two types of orbitals can produce identical total molecular electron densities and therefore molecular properties. Different types of orbitals are useful for different purposes.

Sponsoring Organization:
USDOE
Grant/Contract Number:
NONE; SC0015997
OSTI ID:
1531182
Journal Information:
Angewandte Chemie (International Edition), Journal Name: Angewandte Chemie (International Edition) Journal Issue: 36 Vol. 58; ISSN 1433-7851
Publisher:
Wiley Blackwell (John Wiley & Sons)Copyright Statement
Country of Publication:
Germany
Language:
English

References (59)

Propagators in Quantum Chemistry book March 2004
The Complete Active Space Self-Consistent Field Method and its Applications in Electronic Structure Calculations book January 1987
Grenzorbitale - ihre Bedeutung bei chemischen Reaktionen (Nobel-Vortrag) journal November 1982
Messung von Orbitalen: Provokation oder Wirklichkeit? journal February 2006
Rasterkraftmikroskopie für die molekulare Strukturaufklärung journal February 2018
Plädoyer für eine duale Molekülorbital/Valenzbindungs-Kultur journal March 2018
The Role of Frontier Orbitals in Chemical Reactions (Nobel Lecture) journal November 1982
Measuring Orbitals: Provocation or Reality? journal February 2006
Atomic Force Microscopy for Molecular Structure Elucidation journal February 2018
Pleading for a Dual Molecular-Orbital/Valence-Bond Culture journal March 2018
Visualizing the Frontier Orbitals of a Conformationally Adapted Metalloporphyrin journal January 2008
Electron correlation: The many-body problem at the heart of chemistry: Electron Correlation: A Many-Body Problem journal January 2007
Localizability of dynamic electron correlation journal September 1983
Are atoms intrinsic to molecular electronic wavefunctions? I. The FORS model journal September 1982
Angle-resolved photoelectron spectroscopy of formaldehyde and methanol journal October 1984
The valence orbital momentum distributions and binding energy spectra of methane by electron momentum spectroscopy: Quantitative comparisons using near Hartree-Fock limit and correlated wavefunctions journal May 1990
Seeing molecular orbitals journal April 2000
Über die Zuordnung von Wellenfunktionen und Eigenwerten zu den Einzelnen Elektronen Eines Atoms journal January 1934
Imaging of orbital electron densities by electron momentum spectroscopy – a chemical interpretation of the binary (e,2e) reaction journal July 2001
Electron Propagator Theory book July 2016
STM images of a large organic molecule adsorbed on a bare metal substrate or on a thin insulating layer: Visualization of HOMO and LUMO journal June 2009
Linear-Scaling Coupled Cluster with Perturbative Triple Excitations: The Divide–Expand–Consolidate CCSD(T) Model journal June 2015
Can Orbitals Really Be Observed in Scanning Tunneling Microscopy Experiments? journal June 2017
Energy Ordering of Molecular Orbitals journal December 2016
Generalized valence bond description of bonding in low-lying states of molecules journal November 1973
Classical Valence Bond Approach by Modern Methods journal November 2011
Have Orbitals Really Been Observed? journal November 2000
Is It Time To Retire the Hybrid Atomic Orbital? journal July 2011
Are Molecular Orbitals Delocalized? journal February 2012
In Defense of the Hybrid Atomic Orbitals journal February 2012
Chemical Binding in the Water Molecule 1a journal July 1964
What Do the Kohn−Sham Orbitals and Eigenvalues Mean? journal April 1999
Koopmans’ Theorem in the Restricted Open-Shell Hartree−Fock Method. 1. A Variational Approach journal November 2009
Density Functional Theory of Electronic Structure journal January 1996
Direct observation of d-orbital holes and Cu–Cu bonding in Cu2O journal September 1999
Tomographic imaging of molecular orbitals journal December 2004
Recent advances in submolecular resolution with scanning probe microscopy journal March 2011
Real-space imaging of interfacial water with submolecular resolution journal January 2014
A survey of the principles determining the structure and properties of molecules. Part 1.—The factors responsible for molecular shape and bond energies journal January 1951
Split-localized orbitals can yield stronger configuration interaction convergence than natural orbitals journal October 2003
Improved Quantum Theory of Many‐Electron Systems. V. The Spin‐Coupling Optimized GI Method journal August 1969
Hindered Rotation, Hellmann—Feynmann Theorem, and Localized Molecular Orbitals journal July 1964
Natural Expansion of Exact Wavefunctions. II. The Hydrogen‐Molecule Ground State journal December 1962
Dyson orbitals for ionization from the ground and electronically excited states within equation-of-motion coupled-cluster formalism: Theory, implementation, and examples journal December 2007
The two faces of static correlation journal March 2011
Correlation‐consistent configuration interaction: Accurate bond dissociation energies from simple wave functions journal March 1988
Imaging the wave functions of adsorbed molecules journal December 2013
Spin-coupled valence bond theory journal January 1988
Attosecond electronic and nuclear quantum photodynamics of ozone: time-dependent Dyson orbitals and dipole journal June 2014
Angle resolved photoemission from organic semiconductors: orbital imaging beyond the molecular orbital interpretation journal October 2014
Properties of the One-Particle Green's Function for Nonuniform Many-Fermion Systems journal January 1963
The S Matrix in Quantum Electrodynamics journal June 1949
Assessment of Kohn-Sham density-functional orbitals as approximate Dyson orbitals for the calculation of electron-momentum-spectroscopy scattering cross sections journal December 1994
Direct Observation of Molecular Orbitals of Pentacene Physisorbed on Au(111) by Scanning Tunneling Microscope journal May 2009
Molecules on Insulating Films: Scanning-Tunneling Microscopy Imaging of Individual Molecular Orbitals journal January 2005
Controlling High Harmonic Generation with Molecular Wave Packets journal March 2005
Localized Atomic and Molecular Orbitals journal July 1963
Reconstruction of Molecular Orbital Densities from Photoemission Data journal September 2009
An investigation of hybridization and the orbital models of molecular electronic structure for CH 4 , NH 3 , and H 2 O journal December 2017

Similar Records

Orbitals and the Interpretation of Photoelectron Spectroscopy and (e,2e) Ionization Experiments
Journal Article · Fri Jul 05 00:00:00 EDT 2019 · Angewandte Chemie · OSTI ID:1531186

Electronic structure of. pi. systems. II. Photoelectron spectra and occupied orbitals of some. pi. donors which are derivatives and analogs of bipyranylidene
Journal Article · Thu Aug 20 00:00:00 EDT 1987 · J. Gen. Chem. USSR (Engl. Transl.); (United States) · OSTI ID:5646790

Interpreting atomic-resolution spectroscopic images
Journal Article · Wed Aug 01 00:00:00 EDT 2007 · Physical Review. B, Condensed Matter and Materials Physics · OSTI ID:21055116

Related Subjects