World's Best Scientists 2026 revealed!

D-Index & Metrics

Chemistry

D-Index
57
Citations
10928
World Ranking
11150
National Ranking
3044

Leland C. Allen 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 Leland C. Allen 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: 163 publications — 18th percentile

18% of scientists in this discipline score the same or lower.

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

Leland C. Allen 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 Leland C. Allen 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: 57 D-Index — 39th percentile

39% 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

  • 1967 - Fellow of John Simon Guggenheim Memorial Foundation
  • 1966 - Fellow of American Physical Society (APS)
  • 1966 - Fellow of John Simon Guggenheim Memorial Foundation

Overview

Leland C. Allen was affiliated with Princeton University in the United States. Their scholarly output included publications in journals such as the Journal of Nutrition Education and Behavior and Synlett. Recent publications include the paper titled Table of Contents (2021) published in the Journal of Nutrition Education and Behavior, and Linked PDF of Table of Contents (2023) published in Synlett.

The scientist collaborated with a number of coauthors throughout their career. Frequent coauthors included:

  • M. Swartz
  • R. H. Koch
  • Karen Chapman-Novakofski
  • Daewoo Lee
  • Abbey Alkon

Their work appeared most frequently in the following publication venues:

  • Journal of Nutrition Education and Behavior
  • Synlett

Leland C. Allen was recognized with several awards during their career. These included being named a Fellow of the John Simon Guggenheim Memorial Foundation in both 1966 and 1967. In addition, they were a Fellow of the American Physical Society (APS) as of 1966.

Best Publications

  • Electronegativity is the average one-electron energy of the valence-shell electrons in ground-state free atoms

    Leland C. Allen

  • Theory of the hydrogen bond

    Peter A. Kollman;Leland C. Allen

  • Electronic Structure and Inversion Barrier of Ammonia

    Arvi Rauk;Leland C. Allen;Enrico Clementi

  • Proton and carbon-13 chemical shifts: Comparison between theory and experiment

    Celeste McMichael Rohlfing;Leland C. Allen;Robert Ditchfield

  • Systematic study of the nine hydrogen-bonded dimers involving ammonia, water, and hydrofluoric acid

    J. D. Dill;L. C. Allen;W. C. Topp;J. A. Pople

  • Theory of the Hydrogen Bond: Electronic Structure and Properties of the Water Dimer

    Peter A. Kollman;Leland C. Allen

  • Evaluation and Test of Pauling's Electronegativity Scale

    Lynne Reed Murphy;Terry L. Meek;A. Louis Allred;Leland C. Allen

  • Origin of Rotational Barriers. I. Many‐Electron Molecular Orbital Wavefunctions for Ethane, Methyl Alcohol, and Hydrogen Peroxide

    William H. Fink;Leland C. Allen

  • Metal ion requirements and other aspects of the reaction catalyzed by M1 RNA, the RNA subunit of ribonuclease P from Escherichia coli.

    Cecilia Guerrier-Takada;Karen Haydock;Leland Allen;Sidney Altman

  • Simple model of hydrogen bonding

    Leland C. Allen

  • Theory of the Hydrogen Bond: Ab Initio Calculations on Hydrogen Fluoride Dimer and the Mixed Water–Hydrogen Fluoride Dimer

    Peter A. Kollman;Leland C. Allen

  • Theory of the strong hydrogen bond. Ab initio calculations on HF2- and H5O2+1a

    Peter A. Kollman;Leland Cullen Allen

  • Nature of the hydrogen bond. Dimers involving electronegative atoms of the first row

    Peter A. Kollman;Leland C. Allen

  • Hydrogen bonded dimers and polymers involving hydrogen fluoride, water, and ammonia

    Peter A. Kollman;Leland Cullen Allen

  • Energy component analysis of rotational barriers

    L.C. Allen

  • Geometry of Molecules. I. Wavefunctions for Some Six‐ and Eight‐Electron Polyhydrides

    Sigrid D. Peyerimhoff;Robert J. Buenker;Leland C. Allen

  • Coupling between oxidation state and hydrogen bond conformation in heme proteins

    Joan S. Valentine;Robert P. Sheridan;Leland C. Allen;Peter C. Kahn

  • Molecular orbital calculations on carbonium ions. II. Methyl, ethyl, and vinyl cations. The series C3H7+

    Reiner Sustmann;James E. Williams;M. J. S. Dewar;Leland Cullen Allen

  • Strong, positive‐ion hydrogen bonds: The binary complexes formed from NH3, OH2, FH, PH3, SH2, and ClH

    Peter J. Desmeules;Leland C. Allen

  • The carbon 1-carbon 3 bond in [1.1.1]propellane

    James E. Jackson;Leland C. Allen

Frequent Co-Authors

Peter A. Kollman
Peter A. Kollman University of California, San Francisco
William L. Jorgensen
William L. Jorgensen Yale University
Paul v. R. Schleyer
Paul v. R. Schleyer University of Georgia
Joel F. Liebman
Joel F. Liebman University of Maryland, Baltimore County
John A. Pople
John A. Pople Stanford University
James E. Jackson
James E. Jackson Michigan State University
Arvi Rauk
Arvi Rauk University of Calgary
Warren J. Hehre
Warren J. Hehre University of California, Irvine
Robert J. Buenker
Robert J. Buenker University of Wuppertal
Sigrid D. Peyerimhoff
Sigrid D. Peyerimhoff University of Bonn

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