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Leland C. Allen

D-Index & Metrics

Discipline name D-Index World Ranking National Ranking Publications Citations
Chemistry 57 11150 3044 163 10928

Leland C. Allen publications per year

The chart shows the history of publications by Leland C. Allen between 1954 and 2009, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Leland C. Allen published across 56 years, from 1954 to 2009, averaging 3.3 papers a year. Output peaked at 22 publications in 1970. 4 of the 185 publications appeared in the last two years.

No. of publications
5 10 15 20
Bar chart. Horizontal axis: year, 1954 to 2009. Vertical axis: number of publications, 0 to 22. Peak 22 publications in 1970. 1954: 1 publication 1955: 1 publication 1956: 0 publications 1957: 0 publications 1958: 1 publication 1959: 3 publications 1960: 2 publications 1961: 2 publications 1962: 5 publications 1963: 8 publications 1964: 2 publications 1965: 2 publications 1966: 3 publications 1967: 6 publications 1968: 1 publication 1969: 8 publications 1970: 22 publications 1971: 15 publications 1972: 11 publications 1973: 0 publications 1974: 2 publications 1975: 6 publications 1976: 2 publications 1977: 6 publications 1978: 0 publications 1979: 3 publications 1980: 7 publications 1981: 3 publications 1982: 3 publications 1983: 4 publications 1984: 10 publications 1985: 1 publication 1986: 5 publications 1987: 2 publications 1988: 3 publications 1989: 3 publications 1990: 3 publications 1991: 6 publications 1992: 3 publications 1993: 3 publications 1994: 2 publications 1995: 2 publications 1996: 1 publication 1997: 0 publications 1998: 0 publications 1999: 0 publications 2000: 3 publications 2001: 0 publications 2002: 4 publications 2003: 0 publications 2004: 0 publications 2005: 0 publications 2006: 0 publications 2007: 1 publication 2008: 0 publications 2009: 4 publications
1954 2009

185 publications in total across all disciplines

View publications per year as a table
Leland C. Allen: publications per year, 1954 to 2009
Year Publications
1954 1
1955 1
1956 0
1957 0
1958 1
1959 3
1960 2
1961 2
1962 5
1963 8
1964 2
1965 2
1966 3
1967 6
1968 1
1969 8
1970 22
1971 15
1972 11
1973 0
1974 2
1975 6
1976 2
1977 6
1978 0
1979 3
1980 7
1981 3
1982 3
1983 4
1984 10
1985 1
1986 5
1987 2
1988 3
1989 3
1990 3
1991 6
1992 3
1993 3
1994 2
1995 2
1996 1
1997 0
1998 0
1999 0
2000 3
2001 0
2002 4
2003 0
2004 0
2005 0
2006 0
2007 1
2008 0
2009 4
Total 185
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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.

No. of scientists
250 500 750 1,000 1,250
Bar chart with 63 bars. Horizontal axis: publications, 61–80 to 1,295+. Vertical axis: number of scientists, 0 to 1,350. Most scientists, 1,350, have 161–180 publications. The last bar groups every scientist with 1,295 publications or more. The highlighted bar, 161–180 publications, is where this scientist sits. 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
61–80 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.

View publications distribution as a table
Number of Chemistry scientists by publication count, Research.com 2026 ranking edition. Based on 17,934 ranked scientists.
Publications Scientists This scientist
61–80 66
81–100 302
101–120 623
121–140 918
141–160 1,218
161–180 1,350 163
181–200 1,344
201–220 1,281
221–240 1,216
241–260 1,100
261–280 979
281–300 939
301–320 764
321–340 643
341–360 628
361–380 522
381–400 459
401–420 397
421–440 327
441–460 270
461–480 265
481–500 252
501–520 201
521–540 185
541–560 148
561–580 148
581–600 132
601–620 114
621–640 104
641–660 91
661–680 92
681–700 73
701–720 57
721–740 54
741–760 67
761–780 45
781–800 46
801–820 39
821–840 32
841–860 36
861–880 29
881–900 26
901–920 24
921–940 14
941–960 23
961–980 28
981–1,000 15
1,001–1,020 29
1,021–1,040 12
1,041–1,060 19
1,061–1,080 12
1,081–1,100 6
1,101–1,120 8
1,121–1,140 12
1,141–1,160 5
1,161–1,180 6
1,181–1,200 14
1,201–1,220 7
1,221–1,240 2
1,241–1,260 6
1,261–1,280 4
1,281–1,294 6
1,295+ 100
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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.

No. of scientists
250 500 750 1,000
Bar chart with 61 bars. Horizontal axis: D-Index, 40–41 to 159+. Vertical axis: number of scientists, 0 to 1,051. Most scientists, 1,051, have 56–57 D-Index. The last bar groups every scientist with 159 D-Index or more. The highlighted bar, 56–57 D-Index, is where this scientist sits. 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
40–41 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.

View D-Index distribution as a table
Number of Chemistry scientists by D-index, Research.com 2026 ranking edition. Based on 17,934 ranked scientists.
D-Index Scientists This scientist
40–41 289
42–43 612
44–45 808
46–47 776
48–49 835
50–51 861
52–53 872
54–55 933
56–57 1,051 57
58–59 930
60–61 882
62–63 834
64–65 731
66–67 775
68–69 683
70–71 646
72–73 561
74–75 501
76–77 437
78–79 388
80–81 354
82–83 292
84–85 275
86–87 254
88–89 235
90–91 185
92–93 192
94–95 155
96–97 163
98–99 125
100–101 105
102–103 105
104–105 112
106–107 88
108–109 68
110–111 69
112–113 65
114–115 79
116–117 61
118–119 44
120–121 37
122–123 40
124–125 33
126–127 26
128–129 34
130–131 35
132–133 25
134–135 27
136–137 17
138–139 16
140–141 20
142–143 20
144–145 15
146–147 9
148–149 9
150–151 16
152–153 11
154–155 9
156–157 3
158 3
159+ 98
Download as CSV

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

External Links

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Related Online Degrees & Career Pathways

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Understanding the broader spectrum of forensic career paths and salary can help students make informed decisions about which direction aligns best with their interests and goals. These careers often blend chemistry, biology, and law enforcement for impactful work in public safety.

Best Scientists Citing Leland C. Allen

Robert J. Buenker

Robert J. Buenker

University of Wuppertal

Publications: 41

Sigrid D. Peyerimhoff

Sigrid D. Peyerimhoff

University of Bonn

Publications: 40

Henry F. Schaefer

Henry F. Schaefer

University of Georgia

Publications: 35

Steve Scheiner

Steve Scheiner

Utah State University

Publications: 23

Joel F. Liebman

Joel F. Liebman

University of Maryland, Baltimore County

Publications: 21

Imre G. Csizmadia

Imre G. Csizmadia

University of Toronto

Publications: 20

Sidney Altman

Sidney Altman

Yale University

Publications: 18

Paul v. R. Schleyer

Paul v. R. Schleyer

University of Georgia

Publications: 18

Manuel Yáñez

Manuel Yáñez

Autonomous University of Madrid

Publications: 18

Otilia Mó

Otilia Mó

Autonomous University of Madrid

Publications: 18

Janet E. Del Bene

Janet E. Del Bene

Youngstown State University

Publications: 17

Reinhart Ahlrichs

Reinhart Ahlrichs

Karlsruhe Institute of Technology

Publications: 14

Mark A. Fox

Mark A. Fox

University of Zurich

Publications: 14

Werner Kutzelnigg

Werner Kutzelnigg

Ruhr University Bochum

Publications: 14

Peter A. Kollman

Peter A. Kollman

University of California, San Francisco

Publications: 13

Leif A. Kirsebom

Leif A. Kirsebom

Uppsala University

Publications: 13

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