R. Krishnan

22.5k total citations · 5 hit papers
18 papers, 19.8k citations indexed

About

R. Krishnan is a scholar working on Atomic and Molecular Physics, and Optics, Spectroscopy and Organic Chemistry. According to data from OpenAlex, R. Krishnan has authored 18 papers receiving a total of 19.8k indexed citations (citations by other indexed papers that have themselves been cited), including 14 papers in Atomic and Molecular Physics, and Optics, 6 papers in Spectroscopy and 4 papers in Organic Chemistry. Recurrent topics in R. Krishnan's work include Advanced Chemical Physics Studies (14 papers), Spectroscopy and Quantum Chemical Studies (9 papers) and Inorganic Fluorides and Related Compounds (4 papers). R. Krishnan is often cited by papers focused on Advanced Chemical Physics Studies (14 papers), Spectroscopy and Quantum Chemical Studies (9 papers) and Inorganic Fluorides and Related Compounds (4 papers). R. Krishnan collaborates with scholars based in United States and Germany. R. Krishnan's co-authors include John A. Pople, J. Stephen Binkley, Rolf Seeger, Michael J. Frisch, H. Bernhard Schlegel, Paul von Ragué Schleyer, Robert A. Whiteside, Douglas J. DeFrees, R. A. Whiteside and D. J. DeFrees and has published in prestigious journals such as Journal of the American Chemical Society, The Journal of Chemical Physics and Chemical Physics Letters.

In The Last Decade

R. Krishnan

18 papers receiving 19.4k citations

Hit Papers

5 papers align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Self-consistent molecular orbital methods. XX. A basis set for correlated wave functions

1980 15.3k citations R. Krishnan, J. Stephen Binkley et al. The Journal of Chemical Physics profile →
Approximate fourth‐order perturbation theory of the electron correlation energy

1978 1.2k citations R. Krishnan, John A. Pople International Journal of Quantum Chemistry profile →
Contribution of triple substitutions to the electron correlation energy in fourth order perturbation theory

1980 1.1k citations R. Krishnan, Michael J. Frisch et al. The Journal of Chemical Physics profile →
Electron correlation theories and their application to the study of simple reaction potential surfaces

1978 908 citations John A. Pople, R. Krishnan et al. International Journal of Quantum Chemistry profile →
Derivative studies in configuration–interaction theory

1980 226 citations R. Krishnan, H. Bernhard Schlegel et al. The Journal of Chemical Physics profile →

Peers

R. Krishnan

AMPO

PTC

Rolf Seeger United States

P. C. Hariharan United States

Stephen T. Elbert United States

A. D. McLean United States

Cary F. Chabalowski United States

Gary W. Trucks United States

Marco Häser Germany

L. Wilk Canada

Marwan Nusair Canada

Jerry A. Boatz United States

Rolf Seeger United States

R. Krishnan

6.2k ×0.7

AMPO

6.6k ×1.0

4.8k ×1.0

3.6k ×0.9

3.3k ×0.9

PTC

Citations per year, relative to R. Krishnan R. Krishnan (= 1×) peers Rolf Seeger

Countries citing papers authored by R. Krishnan

Since Specialization

Citations

This map shows the geographic impact of R. Krishnan's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by R. Krishnan with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites R. Krishnan more than expected).

Fields of papers citing papers by R. Krishnan

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by R. Krishnan. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by R. Krishnan. The network helps show where R. Krishnan may publish in the future.

Co-authorship network of co-authors of R. Krishnan

This figure shows the co-authorship network connecting the top 25 collaborators of R. Krishnan. A scholar is included among the top collaborators of R. Krishnan based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with R. Krishnan. R. Krishnan is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

Sort: Min cites: Since: Top N: Style:

18 of 18 papers shown

Pople, John A., H. Bernhard Schlegel, R. Krishnan, et al.. (2009). Molecular orbital studies of vibrational frequencies. International Journal of Quantum Chemistry. 20(S15). 269–278. 103 indexed citations

Pople, John A., Rolf Seeger, & R. Krishnan. (2009). Variational configuration interaction methods and comparison with perturbation theory. International Journal of Quantum Chemistry. 12(S11). 149–163. 140 indexed citations

Pople, John A., R. Krishnan, H. Bernhard Schlegel, & J. Stephen Binkley. (2009). Derivative studies in hartree-fock and møller-plesset theories. International Journal of Quantum Chemistry. 16(S13). 225–241. 235 indexed citations

Krishnan, R., Michael J. Frisch, John A. Pople, & Paul von Ragué Schleyer. (1982). The ground-state singlet potential surface for C2H4. Chemical Physics Letters. 85(2). 145–149. 66 indexed citations

Whiteside, Robert A., R. Krishnan, Michael J. Frisch, John A. Pople, & Paul von Ragué Schleyer. (1981). Cyclic C3 structures. Chemical Physics Letters. 80(3). 547–551. 61 indexed citations

Whiteside, Robert A., R. Krishnan, Douglas J. DeFrees, John A. Pople, & Paul von Ragué Schleyer. (1981). Structures of C4. Chemical Physics Letters. 78(3). 538–540. 101 indexed citations

Krishnan, R., Michael J. Frisch, John A. Pople, & Paul von Ragué Schleyer. (1981). The vinylidene-acetylene isomerization barrier. Chemical Physics Letters. 79(3). 408–411. 116 indexed citations

Krishnan, R., Michael J. Frisch, R. A. Whiteside, John A. Pople, & Paul von Ragué Schleyer. (1981). The structure of CCH+. The Journal of Chemical Physics. 74(7). 4213–4214. 17 indexed citations

DeFrees, D. J., R. Krishnan, H. Bernhard Schlegel, & John A. Pople. (1981). A theoretical study of the fluorohydroxy boranes BFn(OH)3−n. Inorganica Chimica Acta. 47. 19–23. 4 indexed citations

10.

Krishnan, R., J. Stephen Binkley, Rolf Seeger, & John A. Pople. (1980). Self-consistent molecular orbital methods. XX. A basis set for correlated wave functions. The Journal of Chemical Physics. 72(1). 650–654. 15338 indexed citations breakdown →

11.

Krishnan, R., H. Bernhard Schlegel, & John A. Pople. (1980). Derivative studies in configuration–interaction theory. The Journal of Chemical Physics. 72(8). 4654–4655. 226 indexed citations breakdown →

12.

Frisch, Michael J., R. Krishnan, & John A. Pople. (1980). A systematic study of the effect of triple substitutions on the electron correlation energy of small molecules. Chemical Physics Letters. 75(1). 66–68. 92 indexed citations

13.

Krishnan, R., Michael J. Frisch, & John A. Pople. (1980). Contribution of triple substitutions to the electron correlation energy in fourth order perturbation theory. The Journal of Chemical Physics. 72(7). 4244–4245. 1096 indexed citations breakdown →

14.

Whiteside, Robert A., et al.. (1980). Small elemental clusters. I. The structures of Be₂, Be₃, Be₄, and Be₅. Journal of Computational Chemistry. 1(4). 307–322. 50 indexed citations

15.

Seeger, Rolf, R. Krishnan, & John A. Pople. (1978). An iterative variational method and its application to configuration interaction. The Journal of Chemical Physics. 68(5). 2519–2521. 9 indexed citations

16.

Pople, John A., R. Krishnan, H. Bernhard Schlegel, & J. Stephen Binkley. (1978). Electron correlation theories and their application to the study of simple reaction potential surfaces. International Journal of Quantum Chemistry. 14(5). 545–560. 908 indexed citations breakdown →

17.

Krishnan, R. & John A. Pople. (1978). Approximate fourth‐order perturbation theory of the electron correlation energy. International Journal of Quantum Chemistry. 14(1). 91–100. 1232 indexed citations breakdown →

18.

Seeger, Rolf, R. Krishnan, John A. Pople, & Paul von Ragué Schleyer. (1977). Molecular orbital theory of the electronic structure of molecules. 37. Transition states for internal rotation in allene. Journal of the American Chemical Society. 99(22). 7103–7105. 35 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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