World's Best Scientists 2026 revealed!
Gilles Ohanessian

Gilles Ohanessian

D-Index & Metrics

Chemistry

D-Index
44
Citations
6542
World Ranking
16927
National Ranking
747

Gilles Ohanessian publication distribution in Chemistry in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Chemistry in 2026. The highlighted bar marks where Gilles Ohanessian sits on this spectrum.

61–80 publications: 66 scientists 81–100 publications: 302 scientists 101–120 publications: 623 scientists 121–140 publications: 918 scientists 141–160 publications: 1,218 scientists 161–180 publications: 1,350 scientists 181–200 publications: 1,344 scientists 201–220 publications: 1,281 scientists 221–240 publications: 1,216 scientists 241–260 publications: 1,100 scientists 261–280 publications: 979 scientists 281–300 publications: 939 scientists 301–320 publications: 764 scientists 321–340 publications: 643 scientists 341–360 publications: 628 scientists 361–380 publications: 522 scientists 381–400 publications: 459 scientists 401–420 publications: 397 scientists 421–440 publications: 327 scientists 441–460 publications: 270 scientists 461–480 publications: 265 scientists 481–500 publications: 252 scientists 501–520 publications: 201 scientists 521–540 publications: 185 scientists 541–560 publications: 148 scientists 561–580 publications: 148 scientists 581–600 publications: 132 scientists 601–620 publications: 114 scientists 621–640 publications: 104 scientists 641–660 publications: 91 scientists 661–680 publications: 92 scientists 681–700 publications: 73 scientists 701–720 publications: 57 scientists 721–740 publications: 54 scientists 741–760 publications: 67 scientists 761–780 publications: 45 scientists 781–800 publications: 46 scientists 801–820 publications: 39 scientists 821–840 publications: 32 scientists 841–860 publications: 36 scientists 861–880 publications: 29 scientists 881–900 publications: 26 scientists 901–920 publications: 24 scientists 921–940 publications: 14 scientists 941–960 publications: 23 scientists 961–980 publications: 28 scientists 981–1,000 publications: 15 scientists 1,001–1,020 publications: 29 scientists 1,021–1,040 publications: 12 scientists 1,041–1,060 publications: 19 scientists 1,061–1,080 publications: 12 scientists 1,081–1,100 publications: 6 scientists 1,101–1,120 publications: 8 scientists 1,121–1,140 publications: 12 scientists 1,141–1,160 publications: 5 scientists 1,161–1,180 publications: 6 scientists 1,181–1,200 publications: 14 scientists 1,201–1,220 publications: 7 scientists 1,221–1,240 publications: 2 scientists 1,241–1,260 publications: 6 scientists 1,261–1,280 publications: 4 scientists 1,281–1,294 publications: 6 scientists 1,295+ publications: 100 scientists
61 publications 1,295+

This scientist: 122 publications — 6th percentile

6% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,295 publications or more.

Gilles Ohanessian D-index placement in Chemistry in 2026

The chart shows the D-index (discipline H-index) distribution of Chemistry scientists ranked by Research.com in 2026. The highlighted bar marks where Gilles Ohanessian sits on this spectrum.

40–41 D-Index: 289 scientists 42–43 D-Index: 612 scientists 44–45 D-Index: 808 scientists 46–47 D-Index: 776 scientists 48–49 D-Index: 835 scientists 50–51 D-Index: 861 scientists 52–53 D-Index: 872 scientists 54–55 D-Index: 933 scientists 56–57 D-Index: 1,051 scientists 58–59 D-Index: 930 scientists 60–61 D-Index: 882 scientists 62–63 D-Index: 834 scientists 64–65 D-Index: 731 scientists 66–67 D-Index: 775 scientists 68–69 D-Index: 683 scientists 70–71 D-Index: 646 scientists 72–73 D-Index: 561 scientists 74–75 D-Index: 501 scientists 76–77 D-Index: 437 scientists 78–79 D-Index: 388 scientists 80–81 D-Index: 354 scientists 82–83 D-Index: 292 scientists 84–85 D-Index: 275 scientists 86–87 D-Index: 254 scientists 88–89 D-Index: 235 scientists 90–91 D-Index: 185 scientists 92–93 D-Index: 192 scientists 94–95 D-Index: 155 scientists 96–97 D-Index: 163 scientists 98–99 D-Index: 125 scientists 100–101 D-Index: 105 scientists 102–103 D-Index: 105 scientists 104–105 D-Index: 112 scientists 106–107 D-Index: 88 scientists 108–109 D-Index: 68 scientists 110–111 D-Index: 69 scientists 112–113 D-Index: 65 scientists 114–115 D-Index: 79 scientists 116–117 D-Index: 61 scientists 118–119 D-Index: 44 scientists 120–121 D-Index: 37 scientists 122–123 D-Index: 40 scientists 124–125 D-Index: 33 scientists 126–127 D-Index: 26 scientists 128–129 D-Index: 34 scientists 130–131 D-Index: 35 scientists 132–133 D-Index: 25 scientists 134–135 D-Index: 27 scientists 136–137 D-Index: 17 scientists 138–139 D-Index: 16 scientists 140–141 D-Index: 20 scientists 142–143 D-Index: 20 scientists 144–145 D-Index: 15 scientists 146–147 D-Index: 9 scientists 148–149 D-Index: 9 scientists 150–151 D-Index: 16 scientists 152–153 D-Index: 11 scientists 154–155 D-Index: 9 scientists 156–157 D-Index: 3 scientists 158 D-Index: 3 scientists 159+ D-Index: 98 scientists
40 D-Index 159+

This scientist: 44 D-Index — 7th percentile

7% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 159 D-Index or more.

Overview

Gilles Ohanessian is a researcher affiliated with École Polytechnique in France. Their work spans multiple fields including Physics and Astronomy, Environmental Science, and Earth and Planetary Sciences. Within these fields, Ohanessian focuses on subfields such as Atomic and Molecular Physics, and Optics, Ecology, and Atmospheric Science.

The research topics covered by Ohanessian include Spectroscopy and Quantum Chemical Studies, Isotope Analysis in Ecology, and Atmospheric Chemistry and Aerosols. This interdisciplinary approach reflects a blend of physical science methodologies applied to environmental and planetary questions.

Ohanessian has published research in the journal Physical Chemistry Chemical Physics. A notable recent paper is titled "Manifolds of low energy structures for a magic number of hydrated sulfate: SO42−(H2O)24", published in 2021. This work pertains to the structural chemistry of hydrated sulfate clusters, potentially relevant for atmospheric and physical chemistry contexts.

Frequent collaborators of Ohanessian include Carine Clavaguéra and Florian Thaunay. Collaborative publications suggest active engagement with researchers specialized in related chemical and physical sciences.

  • Carine Clavaguéra
  • Florian Thaunay

  • Physical Chemistry Chemical Physics

  • Spectroscopy and Quantum Chemical Studies
  • Isotope Analysis in Ecology
  • Atmospheric chemistry and aerosols

  • Physics and Astronomy
  • Environmental Science
  • Earth and Planetary Sciences

  • Atomic and Molecular Physics, and Optics
  • Ecology
  • Atmospheric Science

Best Publications

  • A Quantitative Basis for a Scale of Na+ Affinities of Organic and Small Biological Molecules in the Gas Phase

    S. Hoyau;K. Norrman;T. B. Mcmahon;Gilles Ohanessian

  • Is delocalization a driving force in chemistry? Benzene, allyl radical, cyclobutadiene, and their isoelectronic species

    Sason S. Shaik;Philippe C. Hiberty;Jean Michel Lefour;Gilles Ohanessian

  • Vibrational signature of charge solvation vs salt bridge isomers of sodiated amino acids in the gas phase.

    Catherine Kapota;Joël Lemaire;Philippe Maître;Gilles Ohanessian

  • Na+ Binding to Cyclic and Linear Dipeptides. Bond Energies, Entropies of Na+ Complexation, and Attachment Sites from the Dissociation of Na+-Bound Heterodimers and ab Initio Calculations

    Blas A. Cerda;Sophie Hoyau;Gilles Ohanessian;Chrys Wesdemiotis

  • Interaction of Alkali Metal Cations (Li+–Cs+) with Glycine in the Gas Phase: A Theoretical Study

    Sophie Hoyau;Gilles Ohanessian

  • Absolute Affinities of α-Amino Acids for Cu+ in the Gas Phase. A Theoretical Study

    S. Hoyau;Gilles Ohanessian

  • Fragmentation mechanisms of α-amino acids protonated under electrospray ionization: a collisional activation and ab initio theoretical study

    Françoise Rogalewicz;Yannick Hoppilliard;Gilles Ohanessian

  • The Na+ affinities of α-amino acids: side-chain substituent effects

    Michelle M. Kish;Gilles Ohanessian;Chrys Wesdemiotis

  • When does electronic delocalization become a driving force of chemical bonding

    Sason S. Shaik;Philippe C. Hiberty;Gilles Ohanessian;Jean Michel Lefour

  • An experimental and Ab initio study of the nature of the binding in gas-phase complexes of sodium ions

    T. B. McMahon;Gilles Ohanessian

  • Valence-bond concepts in transition metals: metal hydride diatomic cations

    Gilles Ohanessian;William A. Goddard

  • Comparison of minimal and extended basis sets in terms of resonant formulas. Application to 1,3 dipoles

    P. C. Hiberty;G. Ohanessian

  • Alkali metal ion binding to amino acids versus their methyl esters: affinity trends and structural changes in the gas phase.

    Jody M. Talley;Blas A. Cerda;Gilles Ohanessian;Chrys Wesdemiotis

  • Is the delocalized π-system of benzene a stable electronic system?

    Philippe C. Hiberty;Sason S. Shaik;Jean Michel Lefour;Gilles Ohanessian

  • Theoretical study of transition-metal hydrides. 5. Hafnium to mercury (HfH+ through HgH+), barium and lanthanum (BaH+ and LaH+)

    Gilles Ohanessian;Mark J. Brusich;William A. Goddard

  • Molecular complexes of small alkanes with cobalt(1

    Jason K. Perry;Gilles Ohanessian;William A. Goddard

  • Vibrational signatures of protonated, phosphorylated amino acids in the gas phase.

    Catarina F Correia;Petru O Balaj;Debora Scuderi;Philippe Maitre

  • Complexation of small organic molecules by Cu

    Sophie Hoyau;Gilles Ohanessian

  • Interaction of neutral and zwitterionic glycine with Zn2+ in gas phase: ab initio and SIBFA molecular mechanics calculations

    Francoise Rogalewicz;Gilles Ohanessian;Nohad Gresh

  • VALENCE-BOND DESCRIPTION OF CONJUGATED MOLECULES. 3. THE THROUGH-RESONANCE CONCEPT IN PARA-SUBSTITUTED NITROBENZENES

    P. C. Hiberty;G. Ohanessian

Frequent Co-Authors

Philippe C. Hiberty
Philippe C. Hiberty University of Paris-Saclay
Sason Shaik
Sason Shaik Hebrew University of Jerusalem
Philippe Maître
Philippe Maître University of Paris-Saclay
Chrys Wesdemiotis
Chrys Wesdemiotis University of Akron
William A. Goddard
William A. Goddard California Institute of Technology
Odile Eisenstein
Odile Eisenstein University of Montpellier
Enric Canadell
Enric Canadell Institut de Ciència de Materials de Barcelona
Josep M. Poblet
Josep M. Poblet Rovira i Virgili University
Patrick M. Dansette
Patrick M. Dansette Université Paris Cité
Gerard Meijer
Gerard Meijer Fritz Haber Institute of the Max Planck Society

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