World's Best Scientists 2026 revealed!
Karuppannan Natarajan

Karuppannan Natarajan

D-Index & Metrics

Chemistry

D-Index
53
Citations
9192
World Ranking
13161
National Ranking
221

Karuppannan Natarajan 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 Karuppannan Natarajan 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: 167 publications — 20th percentile

20% of scientists in this discipline score the same or lower.

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

Karuppannan Natarajan 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 Karuppannan Natarajan 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: 53 D-Index — 28th percentile

28% of scientists in this discipline score the same or lower.

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

Overview

Karuppannan Natarajan is affiliated with Bharathiar University in India and primarily works in the fields of Materials Science and Chemistry. Their research contributions focus extensively on Materials Chemistry and Organic Chemistry, with additional work in Oncology, Inorganic Chemistry, and Food Science.

Their main research topics encompass crystallization and solubility studies, X-ray diffraction in crystallography, synthesis and properties of metal complexes, and crystal structures of chemical compounds. Other areas include organometallic compounds synthesis and characterization, synthesis and biological activity, and the synthesis and characterization of heterocyclic compounds.

The scientist has published numerous papers in various reputable journals. Recent papers include:

  • "N-substitution in isatin thiosemicarbazones decides nuclearity of Cu(II) complexes - Spectroscopic, molecular docking and cytotoxic studies" (2020) in Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy
  • "Synthesis, Characterization and Biological Activity of Novel Cu(II) Complexes of 6-Methyl-2-Oxo-1,2-Dihydroquinoline-3-Carbaldehyde-4n-Substituted Thiosemicarbazones" (2020) in Molecules
  • "A study on the applications of 3-amino quinoline complexes of Pd(II) as catalysts for the Suzuki-Miyaura coupling of aryl halides in aqueous and organic media" (2022) in Polyhedron
  • "Hydrazone complexes of ruthenium(II): Synthesis, crystal structures and catalytic applications in N-alkylation reactions" (2020) in Journal of Organometallic Chemistry
  • "Synthesis, structural and computational study, DNA binding and cytotoxic activity of Cu(II) complexes of 6- and 7-chloro-2-oxo-1,2-dihydroquinoline-3-carbaldehyde-2-furoyl-hydrazones" (2024) in Inorganica Chimica Acta

Their frequent co-authors include Thangavel Thirunavukkarasu, E. Ramachandran, Saud I. Al-Resayes, Mohammad Azam, and Hazel A. Sparkes. This collaboration network reflects interdisciplinary work in related chemical and material science domains.

Their publications often appear in venues such as The Cambridge Structural Database, Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy, Molecules, Polyhedron, and Journal of Organometallic Chemistry. The Cambridge Structural Database is a notable recurring publication venue in their work.

Best Publications

  • Ruthenium(II) complexes containing bidentate Schiff bases and their antifungal activity

    Nallasamy Dharmaraj;Periasamy Viswanathamurthi;Karuppannan Natarajan

  • A novel water soluble ligand bridged cobalt(II) coordination polymer of 2-oxo-1,2-dihydroquinoline-3-carbaldehyde (isonicotinic) hydrazone: evaluation of the DNA binding, protein interaction, radical scavenging and anticancer activity.

    Duraisamy Senthil Raja;Nattamai S. P. Bhuvanesh;Karuppannan Natarajan

  • Effect of N(4)-phenyl substitution in 2-oxo-1,2-dihydroquinoline-3-carbaldehyde semicarbazones on the structure, DNA/protein interaction, and antioxidative and cytotoxic activity of Cu(II) complexes.

    Duraisamy Senthil Raja;Nattamai S. P. Bhuvanesh;Karuppannan Natarajan

  • Effect of terminal N-substitution in 2-oxo-1,2-dihydroquinoline-3-carbaldehyde thiosemicarbazones on the mode of coordination, structure, interaction with protein, radical scavenging and cytotoxic activity of copper(II) complexes

    Duraisamy Senthil Raja;Ganesan Paramaguru;Nattamai S. P. Bhuvanesh;Joseph H. Reibenspies

  • Biological evaluation of a novel water soluble sulphur bridged binuclear copper(II) thiosemicarbazone complex.

    Duraisamy Senthil Raja;Nattamai S.P. Bhuvanesh;Karuppannan Natarajan

  • DNA, protein binding, cytotoxicity, cellular uptake and antibacterial activities of new palladium(II) complexes of thiosemicarbazone ligands: effects of substitution on biological activity.

    P. Kalaivani;R. Prabhakaran;R. Prabhakaran;F. Dallemer;P. Poornima

  • Influence of terminal substitution on structural, DNA, Protein binding, anticancer and antibacterial activities of palladium(II) complexes containing 3-methoxy salicylaldehyde-4(N) substituted thiosemicarbazones

    P. Kalaivani;R. Prabhakaran;R. Prabhakaran;E. Ramachandran;F. Dallemer

  • Shvo's diruthenium complex: a robust catalyst

    R. Karvembu;R. Prabhakaran;K. Natarajan

  • Synthesis, characterization, EXAFS investigation and antibacterial activities of new ruthenium(III) complexes containing tetradentate Schiff base.

    R. Prabhakaran;A. Geetha;M. Thilagavathi;R. Karvembu

  • Ruthenium(II) carbonyl complexes with tridentate Schiff bases and their antibacterial activity

    Chinnasamy Jayabalakrishnan;Karuppannan Natarajan

  • SYNTHESIS, CHARACTERIZATION, AND BIOLOGICAL ACTIVITIES OF RUTHENIUM(II) CARBONYL COMPLEXES CONTAINING BIFUNCTIONAL TRIDENTATE SCHIFF BASES

    C. Jayabalakrishnan;K. Natarajan

  • Ruthenium(II)/(III) complexes of 4-hydroxy-pyridine-2,6-dicarboxylic acid with PPh3/AsPh3 as co-ligand: impact of oxidation state and co-ligands on anticancer activity in vitro

    Thangavel Sathiya Kamatchi;Nataraj Chitrapriya;Hyosun Lee;Chris F. Fronczek

  • Mixed ligand palladium(II) complexes of 6-methoxy-2-oxo-1,2-dihydroquinoline-3-carbaldehyde 4N-substituted thiosemicarbazones with triphenylphosphine co-ligand: synthesis, crystal structure and biological properties.

    Eswaran Ramachandran;Duraisamy Senthil Raja;Nattamai S. P. Bhuvanesh;Karuppannan Natarajan

  • Synthesis, characterization and catalytic activities of ruthenium complexes containing triphenylphosphine/triphenylarsine and tetradentate Schiff bases ☆

    R Karvembu;S Hemalatha;R Prabhakaran;K Natarajan

  • Synthesis, structure and in vitro pharmacological evaluation of a novel 2-oxo-1,2-dihydroquinoline-3-carbaldehyde (2'-methylbenzoyl) hydrazone bridged copper(II) coordination polymer.

    Duraisamy Senthil Raja;Eswaran Ramachandran;Nattamai S.P. Bhuvanesh;Karuppannan Natarajan

  • Versatile Coordination Behavior of Salicylaldehydethiosemicarbazone in Ruthenium(II) Carbonyl Complexes: Synthesis, Spectral, X-ray, Electrochemistry, DNA Binding, Cytotoxicity, and Cellular Uptake Studies

    P. Kalaivani;R. Prabhakaran;P. Poornima;F. Dallemer

  • Biological evaluation of new nickel(II) metallates: Synthesis, DNA/protein binding and mitochondrial mediated apoptosis in human lung cancer cells (A549) via ROS hypergeneration and depletion of cellular antioxidant pool.

    P. Kalaivani;S. Saranya;P. Poornima;R. Prabhakaran

  • Synthesis, crystal structure and pharmacological evaluation of two new Cu(II) complexes of 2-oxo-1,2-dihydroquinoline-3-carbaldehyde (benzoyl) hydrazone: a comparative investigation.

    Duraisamy Senthil Raja;Nattamai S.P. Bhuvanesh;Karuppannan Natarajan

  • Structural and biological studies of mononuclear palladium(II) complexes containing N-substituted thiosemicarbazones

    R. Prabhakaran;S.V. Renukadevi;R. Karvembu;R. Huang

  • Formation of structurally different solvated and non-solvated [Ni(PTSC)(PPh3)] (PTSC = salicylaldehyde-N-phenylthiosemicarbazide anion) crystals from single pot

    R. Prabhakaran;R. Karvembu;T. Hashimoto;K. Shimizu

Frequent Co-Authors

Nattamai Bhuvanesh
Nattamai Bhuvanesh Texas A&M University
Frank R. Fronczek
Frank R. Fronczek Louisiana State University
Matthias Zeller
Matthias Zeller Purdue University West Lafayette
Venkata Krishnan
Venkata Krishnan Indian Institute of Technology Mandi
Wolfgang Kaim
Wolfgang Kaim University of Stuttgart
Nigam P. Rath
Nigam P. Rath University of Missouri–St. Louis
Heinrich Lang
Heinrich Lang Chemnitz University of Technology
Cristina Marzano
Cristina Marzano University of Padua
Gottfried Huttner
Gottfried Huttner Heidelberg University
Rudolf Holze
Rudolf Holze Chemnitz University of Technology

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