World's Best Scientists 2026 revealed!

D-Index & Metrics

Chemistry

D-Index
68
Citations
15521
World Ranking
6569
National Ranking
1989

Jack Halpern 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 Jack Halpern 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: 299 publications — 63rd percentile

63% of scientists in this discipline score the same or lower.

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

Jack Halpern 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 Jack Halpern 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: 68 D-Index — 64th percentile

64% 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

  • 2005 - Fellow of the Royal Society of Canada Academy of Science
  • 1994 - Welch Award in Chemistry, Robert A. Welch Foundation
  • 1984 - Member of the National Academy of Sciences
  • 1966 - Fellow of the American Association for the Advancement of Science (AAAS)
  • 1959 - Fellow of Alfred P. Sloan Foundation
  • 1946 - Fellow of American Physical Society (APS)

Overview

Jack Halpern was affiliated with the University of Chicago in the United States. Their academic career included contributions recognized by several fellowships and memberships in prestigious scientific societies.

Halpern was honored as a Fellow of the American Physical Society in 1946, indicating early recognition in the field of physics. Subsequently, they became a Fellow of the Alfred P. Sloan Foundation in 1959 and a Fellow of the American Association for the Advancement of Science (AAAS) in 1966, marking continued engagement and standing in the scientific community.

In 1984, Jack Halpern was elected as a Member of the National Academy of Sciences, highlighting a significant milestone of professional acknowledgment. Later, in 1994, they received the Welch Award in Chemistry from the Robert A. Welch Foundation, an accolade associated with contributions to chemical sciences.

In 2005, Halpern was named a Fellow of the Royal Society of Canada, appointed by the Academy of Science, reflecting recognition on an international scale.

Their work is documented through a variety of publications; however, specific details regarding papers, co-authors, publication venues, subfields, and topics are not provided, so those aspects remain unlisted. Likewise, information about book publications is not available.

Best Publications

  • Asymmetric hydrogenation of methyl (Z)-.alpha.-acetamidocinnamate catalyzed by [1,2-bis(phenyl-o-anisoyl)phosphino)ethane]rhodium(I): kinetics, mechanism and origin of enantioselection

    Clark R. Landis;Jack Halpern

  • Mechanisms of coenzyme B12-dependent rearrangements.

    Jack Halpern

  • Mechanism and stereoselectivity of asymmetric hydrogenation.

    Jack Halpern

  • Assessment of the T1 criterion for distinguishing between classical and nonclassical transition-metal hydrides : hydride relaxation rates in tris(triarylphosphine)osmium tetrahydrides and related polyhydrides

    Peter J. Desrosiers;Lisheng Cai;Zerong Lin;Rosalie Richards

  • Identification of the enantioselective step in the asymmetric catalytic hydrogenation of a prochiral olefin

    A. S. C. Chan;J. J. Pluth;Jack Halpern

  • Novel coordination chemistry and catalytic properties of cationic 1,2-bis(diphenylphosphino)ethanerhodium(I) complexes

    Jack Halpern;Dennis P. Riley;Albert S. C. Chan;Joseph J. Pluth

  • Kinetics of the Addition of Hydrogen, Oxygen, and Methyl Iodide to Some Square-Planar Iridium(I) Complexes1

    Pwen Boon Chock;Jack Halpern

  • Catalysis of symmetry-restricted reactions by transition metal compounds. Valence isomerization of cubane

    Luigi Cassar;Philip E. Eaton;Jack Halpern

  • Oxidative-addition reactions of transition metal complexes

    Unknown

  • Interception and characterization of a hydridoalkylrhodium intermediate in a homogeneous catalytic hydrogenation reaction

    A. S. C. Chan;Jack Halpern

  • Mechanistic aspects of homogeneous catalytic hydrogenation and related processes

    Jack Halpern

  • Why does nature not use the porphyrin ligand in vitamin B12

    Maureen K. Geno;Jack Halpern

  • Hydrogenation of .alpha.-methylstyrene by hydridopentacarbonylmanganese (I). Evidence for a free-radical mechanism

    Ray L. Sweany;Jack Halpern

  • Activation of carbonhydrogen bonds by metal complexes: Mechanistic, kinetic and thermodynamic considerations

    Jack Halpern

  • INTRAMOLECULAR REDUCTIVE ELIMINATION OF ALKANES FROM CIS-HYDRIDOALKYLBIS(PHOSPHINE)PLATINUM(II) COMPLEXES

    L. Abis;A. Sen;J. Halpern

  • Kinetics and mechanism of catalysis of the asymmetric hydrogenation of .alpha.,.beta.-unsaturated carboxylic acids by bis(carboxylato) {2,2'-bis(diphenylphosphino)-1,1'-binaphthyl}ruthenium(II), [RuII(BINAP) (O2CR)2]

    Michael T. Ashby;Jack Halpern

  • COBALT-CARBON BOND DISSOCIATION ENERGY OF COENZYME B12

    J. Halpern;S.-H. Kim;T. W. Leung

  • KINETIC DETERMINATION OF TRANSITION METAL-ALKYL BOND DISSOCIATION ENERGIES: APPLICATION TO ORGANOCOBALT COMPOUNDS RELATED TO B12 COENZYMES

    T.-T. Tsou;M. Loots;J. Halpern

  • Roles of neutral and anionic ruthenium polyhydrides in the catalytic hydrogenation of ketones and arenes

    Donald E. Linn;Jack Halpern

  • The theory of electron transfer between metal ions in bridged systems

    Unknown

  • Ligand effects on transition metal-alkyl bond dissociation energies

    Flora T. T. Ng;Garry L. Rempel

  • Mechanism of the cobalt carbonyl-catalyzed homogeneous hydrogenation of aromatic hydrocarbons

    Harold M. Feder;Jack Halpern

Frequent Co-Authors

Ayusman Sen
Ayusman Sen Pennsylvania State University
Brian R. James
Brian R. James University of British Columbia
Philip E. Eaton
Philip E. Eaton University of Chicago
John E. Bercaw
John E. Bercaw California Institute of Technology
Clark R. Landis
Clark R. Landis University of Wisconsin–Madison
Garry L. Rempel
Garry L. Rempel University of Waterloo
Luigi G. Marzilli
Luigi G. Marzilli Louisiana State University
Albert S. C. Chan
Albert S. C. Chan Sun Yat-sen University
Jochanan Blum
Jochanan Blum Hebrew University of Jerusalem
Joseph Rabani
Joseph Rabani Hebrew University of Jerusalem

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