Krishnan Raghavachari

489 total papers · 60.1k total citations
401 papers, 52.5k citations indexed

About

Krishnan Raghavachari is a scholar working on Atomic and Molecular Physics, and Optics, Materials Chemistry and Organic Chemistry. According to data from OpenAlex, Krishnan Raghavachari has authored 401 papers receiving a total of 52.5k indexed citations (citations by other indexed papers that have themselves been cited), including 199 papers in Atomic and Molecular Physics, and Optics, 174 papers in Materials Chemistry and 123 papers in Organic Chemistry. Recurrent topics in Krishnan Raghavachari's work include Advanced Chemical Physics Studies (175 papers), Spectroscopy and Quantum Chemical Studies (51 papers) and Semiconductor materials and devices (40 papers). Krishnan Raghavachari is often cited by papers focused on Advanced Chemical Physics Studies (175 papers), Spectroscopy and Quantum Chemical Studies (51 papers) and Semiconductor materials and devices (40 papers). Krishnan Raghavachari collaborates with scholars based in United States, Germany and China. Krishnan Raghavachari's co-authors include John A. Pople, Larry A. Curtiss, Gary W. Trucks, Martin Head‐Gordon, Paul C. Redfern, Yves J. Chabal, Vitaly A. Rassolov, Celeste McMichael Rohlfing, Anwar G. Baboul and G. S. Higashi and has published in prestigious journals such as Nature, Science and Chemical Reviews.

In The Last Decade

Krishnan Raghavachari

396 papers receiving 51.2k citations

Hit Papers

A fifth-order perturbatio... 1981 2026 1996 2011 1989 1987 1991 1998 1997 2.0k 4.0k 6.0k
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 benchmark for papers published in the same subfield and year, or reaches the top citation threshold in at least one of its specific research topics.

  1. A fifth-order perturbation comparison of electron correlation theories
    1989 7.4k citations Krishnan Raghavachari, Gary W. Trucks et al. Chemical Physics Letters profile →
  2. Quadratic configuration interaction. A general technique for determining electron correlation energies
    1987 4.1k citations John A. Pople, Martin Head‐Gordon et al. The Journal of Chemical Physics profile →
  3. Gaussian-2 theory for molecular energies of first- and second-row compounds
    1991 3.1k citations Larry A. Curtiss, Krishnan Raghavachari et al. The Journal of Chemical Physics profile →
  4. Gaussian-3 (G3) theory for molecules containing first and second-row atoms
    1998 2.5k citations Larry A. Curtiss, Krishnan Raghavachari et al. The Journal of Chemical Physics profile →
  5. Assessment of Gaussian-2 and density functional theories for the computation of enthalpies of formation
    1997 1.9k citations Larry A. Curtiss, Krishnan Raghavachari et al. The Journal of Chemical Physics profile →
  6. Gaussian-4 theory
    2007 1.7k citations Larry A. Curtiss, Paul C. Redfern et al. The Journal of Chemical Physics profile →
  7. Gaussian-3 theory using density functional geometries and zero-point energies
    1999 1.6k citations Anwar G. Baboul, Larry A. Curtiss et al. The Journal of Chemical Physics profile →
  8. Gaussian-1 theory: A general procedure for prediction of molecular energies
    1989 1.3k citations John A. Pople, Martin Head‐Gordon et al. The Journal of Chemical Physics profile →
  9. Gaussian-2 theory using reduced Mo/ller–Plesset orders
    1993 1.2k citations Larry A. Curtiss, Krishnan Raghavachari et al. The Journal of Chemical Physics profile →
  10. Ideal hydrogen termination of the Si (111) surface
    1990 1.2k citations G. S. Higashi, Yves J. Chabal et al. Applied Physics Letters profile →
  11. Gaussian-3 theory using reduced Mo/ller-Plesset order
    1999 1.1k citations Larry A. Curtiss, Paul C. Redfern et al. The Journal of Chemical Physics profile →
  12. Highly correlated systems. Excitation energies of first row transition metals Sc–Cu
    1989 974 citations Krishnan Raghavachari, Gary W. Trucks The Journal of Chemical Physics profile →
  13. Assessment of Gaussian-3 and density functional theories for a larger experimental test set
    2000 637 citations Larry A. Curtiss, Krishnan Raghavachari et al. The Journal of Chemical Physics profile →
  14. Gaussian-1 theory of molecular energies for second-row compounds
    1990 606 citations Larry A. Curtiss, Christopher W. Jones et al. The Journal of Chemical Physics profile →
  15. Gaussian-4 theory using reduced order perturbation theory
    2007 597 citations Larry A. Curtiss, Paul C. Redfern et al. The Journal of Chemical Physics profile →
  16. Structure, stability, and fragmentation of small carbon clusters
    1987 567 citations Krishnan Raghavachari, J. Stephen Binkley The Journal of Chemical Physics profile →
  17. Electronic structure and bonding in icosahedral C60
    1986 505 citations Robert C. Haddon, Louis E. Brus et al. Chemical Physics Letters profile →
  18. Assessment of Gaussian-2 and density functional theories for the computation of ionization potentials and electron affinities
    1998 493 citations Larry A. Curtiss, Paul C. Redfern et al. The Journal of Chemical Physics profile →
  19. Gaussian-3X (G3X) theory: Use of improved geometries, zero-point energies, and Hartree–Fock basis sets
    2001 459 citations Larry A. Curtiss, Paul C. Redfern et al. The Journal of Chemical Physics profile →
  20. Size-consistent Brueckner theory limited to double substitutions
    1989 459 citations Nicholas C. Handy, John A. Pople et al. Chemical Physics Letters profile →
  21. Theoretical study of small silicon clusters: Equilibrium geometries and electronic structures of Sin (n=2–7,10)
    1986 435 citations Krishnan Raghavachari The Journal of Chemical Physics profile →
  22. Superconductivity in the Fullerenes
    1991 433 citations C. M. Varma, Jan Zaanen et al. Science profile →
  23. Bonding and stabilities of small silicon clusters: A theoretical study of Si7–Si1
    1988 416 citations Krishnan Raghavachari, Celeste McMichael Rohlfing The Journal of Chemical Physics profile →
  24. Molecular orbital theory of the electronic structure of organic molecules. 40. Structures and energies of C1-C3 carbocations including effects of electron correlation
    1981 303 citations Krishnan Raghavachari, Robert A. Whiteside et al. Journal of the American Chemical Society profile →
  25. Fifth order Moeller-Plesset perturbation theory: comparison of existing correlation methods and implementation of new methods correct to fifth order
    1990 279 citations Krishnan Raghavachari, John A. Pople et al. The Journal of Physical Chemistry profile →
  26. Comprehensive theoretical study of isomers and rearrangement barriers of even-electron polyatomic molecules HmABHn (A, B = carbon, nitrogen, oxygen, and fluorine)
    1983 199 citations John A. Pople, Krishnan Raghavachari et al. Journal of the American Chemical Society profile →

Author Peers

Peers are selected by citation overlap in the author's most active subfields. citations · hero ref

Author Last Decade Papers Cites
Krishnan Raghavachari 29.6k 18.0k 16.8k 9.4k 7.5k 401 52.5k
Mark S. Gordon 25.2k 0.9× 14.4k 0.8× 16.3k 1.0× 10.0k 1.1× 11.1k 1.5× 572 54.5k
H. Bernhard Schlegel 18.6k 0.6× 9.6k 0.5× 17.8k 1.1× 7.7k 0.8× 7.6k 1.0× 445 45.6k
Larry A. Curtiss 21.7k 0.7× 21.9k 1.2× 21.6k 1.3× 8.3k 0.9× 10.4k 1.4× 495 72.5k
Martin Head‐Gordon 43.0k 1.5× 21.6k 1.2× 14.9k 0.9× 13.4k 1.4× 16.6k 2.2× 683 77.3k
Keiji Morokuma 18.0k 0.6× 13.2k 0.7× 18.1k 1.1× 7.8k 0.8× 7.9k 1.1× 831 49.9k
Michael J. Frisch 30.9k 1.0× 20.9k 1.2× 28.3k 1.7× 16.8k 1.8× 17.6k 2.4× 280 81.1k
Warren J. Hehre 21.9k 0.7× 15.3k 0.8× 25.6k 1.5× 12.1k 1.3× 12.8k 1.7× 214 61.8k
Yan Zhao 16.4k 0.6× 21.8k 1.2× 25.9k 1.5× 7.0k 0.7× 10.1k 1.3× 593 73.7k
Nicholas C. Handy 25.7k 0.9× 10.7k 0.6× 8.6k 0.5× 11.3k 1.2× 8.4k 1.1× 374 42.3k
Evert Jan Baerends 23.0k 0.8× 20.1k 1.1× 16.8k 1.0× 7.0k 0.7× 10.0k 1.3× 368 57.3k

Countries citing papers authored by Krishnan Raghavachari

Since Specialization
Citations

This map shows the geographic impact of Krishnan Raghavachari'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 Krishnan Raghavachari with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Krishnan Raghavachari more than expected).

Fields of papers citing papers by Krishnan Raghavachari

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Krishnan Raghavachari. 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 Krishnan Raghavachari. The network helps show where Krishnan Raghavachari may publish in the future.

Co-authorship network of co-authors of Krishnan Raghavachari

This figure shows the co-authorship network connecting the top 25 collaborators of Krishnan Raghavachari. A scholar is included among the top collaborators of Krishnan Raghavachari 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 Krishnan Raghavachari. Krishnan Raghavachari is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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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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