2026 Robert G. Parr: Physics Researcher – H-Index, Publications & Awards

D-Index & Metrics

Discipline name	D-Index	World Ranking	National Ranking	Publications	Citations
Chemistry	89	2120	766	270	189148
Physics	94	1949	1008	286	194044

Discipline name

D-Index

World Ranking

National Ranking

Publications

Citations

Chemistry

2120

766

270

189148

Physics

1949

1008

286

194044

Chemistry

D-Index

Citations

189148

World Ranking

2120

National Ranking

766

Physics

D-Index

Citations

194044

World Ranking

1949

National Ranking

1008

Overview

Robert G. Parr was affiliated with the University of North Carolina at Chapel Hill in the United States. Their research contributions focused on various topics within physical and theoretical chemistry, atomic and molecular physics, and materials chemistry.

Their published works explored advanced themes in chemical and physical molecular interactions, including thermal and kinetic analysis as well as chemical physics studies. The main topics associated with their research included:

Advanced Physical and Chemical Molecular Interactions
Advanced Chemical Physics Studies
Thermal and Kinetic Analysis

Robert G. Parr's recent papers, all published through UNC Libraries in 2021, encompassed the following:

"Is it impossible to find the universal density functional? Or is it just well-hidden?" (2021)
"Expansion of the density-functional energy components E c and T c in terms of moments of the electron density" (2021)
"Density-functional formulas for atomic electronic energy components in terms of moments of the electron density" (2021)

Their frequent collaborators included researchers Shubin Liu, Á. Nagy, and Paul W. Ayers, who co-authored multiple papers with them, indicating ongoing collaborative research relationships.

Robert G. Parr's work was primarily disseminated through UNC Libraries, the main venue for their publications. Their research contributions intersected multiple subfields, particularly:

Physical and Theoretical Chemistry
Atomic and Molecular Physics, and Optics
Materials Chemistry

Robert G. Parr's academic output reflects a focus on theoretical formulations and expansions related to electron density and energy components in atomic and molecular systems, contributing to foundational areas of chemistry and physics.

Best Publications

Development of the Colle-Salvetti correlation-energy formula into a functional of the electron density

Chengteh Lee;Weitao Yang;Robert G. Parr

115946
Citations
Density-functional theory of atoms and molecules

Robert G. Parr

17757
Citations
Absolute hardness: companion parameter to absolute electronegativity

Robert G. Parr;Ralph G. Pearson

10681
Citations
Electronegativity: The density functional viewpoint

Robert G. Parr;Robert A. Donnelly;Mel Levy;William E. Palke

4723
Citations
Density Functional Theory of Electronic Structure

W. Kohn;and A. D. Becke;R. G. Parr

4684
Citations
Density functional approach to the frontier-electron theory of chemical reactivity

Robert G. Parr;Weitao Yang

4040
Citations
Density-Functional Theory for Fractional Particle Number: Derivative Discontinuities of the Energy

John P. Perdew;Robert G. Parr;Mel Levy;Jose L. Balduz

3517
Citations
A Semi‐Empirical Theory of the Electronic Spectra and Electronic Structure of Complex Unsaturated Molecules. II

Rudolph Pariser;Robert G. Parr

2327
Citations
Hardness, softness, and the fukui function in the electronic theory of metals and catalysis.

Weitao Yang;Robert G. Parr

2076
Citations
Principle of maximum hardness

Robert G. Parr;Pratim K. Chattaraj

1621
Citations
Density-Functional Theory of the Electronic Structure of Molecules

Robert G. Parr;Weitao Yang

1308
Citations
Variational Principles for Describing Chemical Reactions: The Fukui Function and Chemical Hardness Revisited

Paul W. Ayers;Robert G. Parr

1064
Citations
Activation hardness: new index for describing the orientation of electrophilic aromatic substitution

Zhongxiang Zhou;Robert G. Parr

850
Citations
Density Functional Theory

Robert G. Parr

695
Citations
New alternative to the Dunham potential for diatomic molecules

Gary Simons;Robert G. Parr;J. Michael Finlan

686
Citations
Electron density, Kohn−Sham frontier orbitals, and Fukui functions

Weitao Yang;Robert G. Parr;R. Pucci

670
Citations
From electron densities to Kohn-Sham kinetic energies, orbital energies, exchange-correlation potentials, and exchange-correlation energies.

Qingsheng Zhao;Qingsheng Zhao;Robert C. Morrison;Robert C. Morrison;Robert G. Parr;Robert G. Parr

600
Citations
What is an atom in a molecule

Robert G. Parr;Paul W. Ayers;Roman F. Nalewajski

557
Citations
New measures of aromaticity: absolute hardness and relative hardness

Zhongxiang Zhou;Robert G. Parr

548
Citations
Molecular hardness and softness, local hardness and softness, hardness and softness kernels, and relations among these quantities

Max L Berkowitz;Robert G. Parr

525
Citations