P. C. Hariharan

20.3k total citations · 3 hit papers
58 papers, 18.3k citations indexed

About

P. C. Hariharan is a scholar working on Atomic and Molecular Physics, and Optics, Physical and Theoretical Chemistry and Organic Chemistry. According to data from OpenAlex, P. C. Hariharan has authored 58 papers receiving a total of 18.3k indexed citations (citations by other indexed papers that have themselves been cited), including 33 papers in Atomic and Molecular Physics, and Optics, 19 papers in Physical and Theoretical Chemistry and 18 papers in Organic Chemistry. Recurrent topics in P. C. Hariharan's work include Advanced Chemical Physics Studies (31 papers), Crystallography and molecular interactions (9 papers) and Photochemistry and Electron Transfer Studies (9 papers). P. C. Hariharan is often cited by papers focused on Advanced Chemical Physics Studies (31 papers), Crystallography and molecular interactions (9 papers) and Photochemistry and Electron Transfer Studies (9 papers). P. C. Hariharan collaborates with scholars based in United States, Germany and Italy. P. C. Hariharan's co-authors include John A. Pople, Joyce J. Kaufman, Leo Radom, Paul v. R. Schleyer, Werner Kutzelnigg, Wilfried Meyer, W. Andrzej Sokalski, Szczepan Roszak, William A. Lathan and Volker Staemmler and has published in prestigious journals such as Journal of the American Chemical Society, The Journal of Chemical Physics and The Journal of Physical Chemistry.

In The Last Decade

P. C. Hariharan

52 papers receiving 17.9k citations

Hit 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.

The influence of polarization functions on molecular orbital hydrogenation energies

1973 14.1k citations P. C. Hariharan, John A. Pople Theoretical Chemistry Accounts profile →
Accuracy of AH_nequilibrium geometries by single determinant molecular orbital theory

1974 2.1k citations P. C. Hariharan, John A. Pople profile →
The effect of d-functions on molecular orbital energies for hydrocarbons

1972 1.0k citations P. C. Hariharan, John A. Pople Chemical Physics Letters profile →

Peers

P. C. Hariharan

AMPO

PTC

Rolf Seeger United States

R. Krishnan United States

Marco Häser Germany

Cary F. Chabalowski United States

Kenichi Fukui Japan

Stephen T. Elbert United States

Heinzwerner Preuß Germany

Marwan Nusair Canada

R. F. W. Bader Canada

L. Wilk Canada

Rolf Seeger United States

P. C. Hariharan

6.6k ×0.8

6.2k ×1.1

AMPO

4.8k ×1.1

3.6k ×1.0

3.3k ×0.9

PTC

Citations per year, relative to P. C. Hariharan P. C. Hariharan (= 1×) peers Rolf Seeger

Countries citing papers authored by P. C. Hariharan

Since Specialization

Citations

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

Fields of papers citing papers by P. C. Hariharan

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by P. C. Hariharan. 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 P. C. Hariharan. The network helps show where P. C. Hariharan may publish in the future.

Co-authorship network of co-authors of P. C. Hariharan

This figure shows the co-authorship network connecting the top 25 collaborators of P. C. Hariharan. A scholar is included among the top collaborators of P. C. Hariharan 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 P. C. Hariharan. P. C. Hariharan 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:

20 of 20 papers shown

Kaufman, Joyce J., P. C. Hariharan, Cary F. Chabalowski, & Matti Hotokka. (2009). Multireference determinant CI calculations and CASSCF calculations on the CH3-NO2 decomposition pathway of nitromethane. International Journal of Quantum Chemistry. 28(S19). 221–235. 1 indexed citations

Hariharan, P. C., et al.. (2009). Quantum chemical calculations for understanding and predicting toxicity. II. The phosphorylation step in the inhibition of ache by organophosphorus anticholinesterases. International Journal of Quantum Chemistry. 22(S9). 275–280. 2 indexed citations

Hariharan, P. C., et al.. (2004). NASA/IEEE MSST 2004 Twelfth NASA Goddard Conference on Mass Storage Systems and Technologies in cooperation with the Twenty-First IEEE Conference on Mass Storage Systems and Technologies. 5 indexed citations

Hariharan, P. C., et al.. (1998). The mass storage testing laboratory at GSFC. 1 indexed citations

Hariharan, P. C., et al.. (1996). Fifth NASA Goddard Conference on Mass Storage Systems and Technologies. NASA Technical Reports Server (NASA). 7 indexed citations

Hariharan, P. C., et al.. (1993). Simulation of a data archival and distribution system at GSFC. 2 indexed citations

Roszak, Szczepan, P. C. Hariharan, Joyce J. Kaufman, & W. S. Koski. (1990). MRD‐CI calculations of proton affinity within the ab initio method for approximation of the frozen molecular fragment. Journal of Computational Chemistry. 11(9). 1076–1079. 4 indexed citations

Roszak, Szczepan, et al.. (1988). Ab-InitioMRD-CI calculations for breaking a chemical bond in a molecule in a crystal or other solid environment I. H3C-NO2 decomposition in nitromethane. International Journal of Quantum Chemistry. 34(S22). 619–653. 6 indexed citations

Balasubramanian, K., et al.. (1988). Energy transfer in Ar-Cl+collisions. Physical review. A, General physics. 37(9). 3204–3210. 10 indexed citations

10.

Sokalski, W. Andrzej, Alfred H. Lowrey, Szczepan Roszak, et al.. (1986). Nonempirical Atom‐Atom Potentials for Main Components of Intermolecular Interaction Energy. Journal of Computational Chemistry. 7(5). 693–700. 27 indexed citations

11.

Balasubramanian, K., Joyce J. Kaufman, P. C. Hariharan, & W. S. Koski. (1986). Energy transfer in Br +-Kr collisions. Chemical Physics Letters. 129(2). 165–171. 10 indexed citations

12.

Hariharan, P. C., Joyce J. Kaufman, Alfred H. Lowrey, & Richard S. Miller. (1985). Ab initioMODPOT/VRDDO/MERGE calculations on energetic compounds. IV. Nitrocubanes: Mononitro to octanitro quantum chemical calculations and electrostatic molecular potential contour maps. International Journal of Quantum Chemistry. 28(1). 39–59. 11 indexed citations

13.

Hariharan, P. C., W. S. Koski, Joyce J. Kaufman, & Richard S. Miller. (1983). Ab initioMODPOT/VRDDO/MERGE calculations on energetic compounds. III. Nitroexplosives: Polyaminopolynitrobenzenes (including DATB, TATB, and tetryl). International Journal of Quantum Chemistry. 23(4). 1493–1504. 6 indexed citations

14.

Sokalski, W. Andrzej, Szczepan Roszak, P. C. Hariharan, & Joyce J. Kaufman. (1983). Improved SCF interaction energy decomposition scheme corrected for basis set superposition effect. International Journal of Quantum Chemistry. 23(3). 847–854. 79 indexed citations

15.

Sokalski, W. Andrzej, P. C. Hariharan, & Joyce J. Kaufman. (1983). Guidelines for development of basis sets for the first‐order intermolecular interaction energy calculations. Journal of Computational Chemistry. 4(4). 506–512. 15 indexed citations

16.

Lowrey, Alfred H., P. C. Hariharan, & Joyce J. Kaufman. (1981). Molecular calculations with the nonempiricalab-initioMODPOT/VRDDO/MERGE procedures. XIV. 2,6-dimethyl-N-nitroso morpholine and its ?-OH isomers: Conformations and electrostatic molecular potential contour maps. International Journal of Quantum Chemistry. 20(S8). 149–160. 1 indexed citations

17.

Hariharan, P. C., Joyce J. Kaufman, & Carlo Petrongolo. (1981). Electrostatic molecular potential contour maps generated from ab initioMODPOT/VRDDO/MERGE wave functions of carcinogenic 3‐methylcholanthrene and its metabolites. International Journal of Quantum Chemistry. 20(5). 1083–1095. 4 indexed citations

18.

Hariharan, P. C. & Volker Staemmler. (1976). Potential energy curve of 1Σ+ Li+/He. Chemical Physics. 15(3). 409–414. 39 indexed citations

19.

Radom, Leo, P. C. Hariharan, John A. Pople, & Paul v. R. Schleyer. (1976). Molecular orbital theory of the electronic structure of organic compounds. XXII. Structures and stabilities of C3H3+ and C3H+ cations. Journal of the American Chemical Society. 98(1). 10–14. 103 indexed citations

20.

Hariharan, P. C. & John A. Pople. (1973). The influence of polarization functions on molecular orbital hydrogenation energies. Theoretical Chemistry Accounts. 28(3). 213–222. 14128 indexed citations breakdown →

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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