World's Best Scientists 2026 revealed!

D-Index & Metrics

Chemistry

D-Index
106
Citations
62013
World Ranking
929
National Ranking
21

Tom Ziegler 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 Tom Ziegler 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: 488 publications — 88th percentile

88% of scientists in this discipline score the same or lower.

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

Tom Ziegler 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 Tom Ziegler 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: 106 D-Index — 95th percentile

95% of scientists in this discipline score the same or lower.

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

Research.com Recognitions

  • 2010 - Chemical Institute of Canada Medal
  • 1997 - Fellow of the Royal Society of Canada Academy of Science

Overview

Tom Ziegler was affiliated with the University of Calgary in Canada. Their academic career involved contributions recognized by notable honors within the scientific community.

Over the course of their career, Tom Ziegler was awarded the Chemical Institute of Canada Medal in 2010. Earlier, in 1997, they were named a Fellow of the Royal Society of Canada in the Academy of Science, reflecting recognition by peers in the field.

Although no specific list of recent papers, co-authors, publication venues, book publications, or research topics are available, the presence of these distinguished awards indicates a significant engagement with the scientific disciplines connected to chemistry or related areas.

Tom Ziegler's academic endeavors were situated within the Canadian research landscape, contributing to the University of Calgary's scholarly environment through their professional activities before their passing.

Best Publications

  • Chemistry with ADF

    G.te Velde;F.M. Bickelhaupt;E.J. Baerends;C. Fonseca Guerra

  • A Combined Charge and Energy Decomposition Scheme for Bond Analysis

    Mariusz P. Mitoraj;Artur Michalak;Tom Ziegler

  • The determination of molecular structures by density functional theory. The evaluation of analytical energy gradients by numerical integration

    Louis Versluis;Tom Ziegler

  • A theoretical study of the ethylene-metal bond in complexes between copper(1+), silver(1+), gold(1+), platinum(0) or platinum(2+) and ethylene, based on the Hartree-Fock-Slater transition-state method

    Tom Ziegler;Arvi Rauk

  • Carbon monoxide, carbon monosulfide, molecular nitrogen, phosphorus trifluoride, and methyl isocyanide as .sigma. donors and .pi. acceptors. A theoretical study by the Hartree-Fock-Slater transition-state method

    Tom Ziegler;Arvi Rauk

  • An implementation of the conductor-like screening model of solvation within the Amsterdam density functional package

    Cory C. Pye;Tom Ziegler

  • On the calculation of multiplet energies by the hartree-fock-slater method

    Tom Ziegler;Arvi Rauk;Evert J. Baerends

  • Calculation of NMR Shielding Tensors Using Gauge-Including Atomic Orbitals and Modern Density Functional Theory

    Georg Schreckenbach;Tom Ziegler

  • Bond orbitals from chemical valence theory

    Artur Michalak;Mariusz Mitoraj;Tom Ziegler

  • Density functional calculations of nuclear magnetic shieldings using the zeroth-order regular approximation (ZORA) for relativistic effects: ZORA nuclear magnetic resonance

    S. K. Wolff;T. Ziegler;E. van Lenthe;E. J. Baerends

  • A Reassessment of the First Metal-Carbonyl Dissociation Energy in M(CO)4 (M = Ni, Pd, Pt), M(CO)5 (M = Fe, Ru, Os), and M(CO)6 (M = Cr, Mo, W) by a Quasirelativistic Density Functional Method

    Jian Li;Georg Schreckenbach;Tom Ziegler

  • On the calculation of bonding energies by the Hartree Fock Slater method

    Tom Ziegler;Arvi Rauk

  • Calculation of DFT-GIAO NMR shifts with the inclusion of spin-orbit coupling

    S. K. Wolff;T. Ziegler

  • Calculation of bond energies in compounds of heavy elements by a quasi-relativistic approach

    Tom Ziegler;Evert Jan Baerends;Jaap G. Snijders;Walter Ravenek

  • Chiroptical properties from time-dependent density functional theory. I. Circular dichroism spectra of organic molecules

    Jochen Autschbach;Tom Ziegler;Stan J. A. van Gisbergen;Evert Jan Baerends

  • The Role of Bulky Substituents in Brookhart-Type Ni(II) Diimine Catalyzed Olefin Polymerization: A Combined Density Functional Theory and Molecular Mechanics Study

    Liqun Deng;Tom K. Woo;Luigi Cavallo;and Peter M. Margl

  • Theoretical methods of potential use for studies of inorganic reaction mechanisms.

    Tom Ziegler;Jochen Autschbach

  • Optimization of molecular structures by self‐consistent and nonlocal density‐functional theory

    Liangyou Fan;Tom Ziegler

  • A Density Functional Study of SN2 Substitution at Square-Planar Platinum(II) Complexes

    Jason Cooper;Tom Ziegler

  • Relativistic effects on bonding

    T. Ziegler;J. G. Snijders;E. J. Baerends

  • The 1994 Alcan Award Lecture Density functional theory as a practical tool in studies of organometallic energetics and kinetics. Beating the heavy metal blues with DFT

    Tom Ziegler

Frequent Co-Authors

Jochen Autschbach
Jochen Autschbach University at Buffalo, State University of New York
Tom K. Woo
Tom K. Woo University of Ottawa
Georg Schreckenbach
Georg Schreckenbach University of Manitoba
Evert Jan Baerends
Evert Jan Baerends Vrije Universiteit Amsterdam
Tristram Chivers
Tristram Chivers University of Calgary
Eva Zurek
Eva Zurek University at Buffalo, State University of New York
Arvi Rauk
Arvi Rauk University of Calgary
Heinz-Bernhard Kraatz
Heinz-Bernhard Kraatz University of Toronto
Warren E. Piers
Warren E. Piers University of Calgary
Luigi Cavallo
Luigi Cavallo King Abdullah University of Science and Technology

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