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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Chemistry 65 7604 6894 440 398 546 16281

Ian H. Hillier publications per year

The chart shows the history of publications by Ian H. Hillier between 1963 and 2019, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Ian H. Hillier published across 57 years, from 1963 to 2019, averaging 9.6 papers a year. Output peaked at 24 publications in 1972. 1 of the 550 publications appeared in the last two years.

No. of publications
5 10 15 20
Bar chart. Horizontal axis: year, 1963 to 2019. Vertical axis: number of publications, 0 to 24. Peak 24 publications in 1972. 1963: 2 publications 1964: 3 publications 1965: 7 publications 1966: 6 publications 1967: 2 publications 1968: 1 publication 1969: 7 publications 1970: 20 publications 1971: 9 publications 1972: 24 publications 1973: 19 publications 1974: 11 publications 1975: 17 publications 1976: 12 publications 1977: 11 publications 1978: 9 publications 1979: 19 publications 1980: 15 publications 1981: 11 publications 1982: 12 publications 1983: 12 publications 1984: 11 publications 1985: 12 publications 1986: 6 publications 1987: 10 publications 1988: 12 publications 1989: 8 publications 1990: 14 publications 1991: 6 publications 1992: 11 publications 1993: 11 publications 1994: 13 publications 1995: 14 publications 1996: 8 publications 1997: 21 publications 1998: 7 publications 1999: 14 publications 2000: 11 publications 2001: 12 publications 2002: 4 publications 2003: 13 publications 2004: 9 publications 2005: 9 publications 2006: 18 publications 2007: 9 publications 2008: 10 publications 2009: 12 publications 2010: 9 publications 2011: 10 publications 2012: 6 publications 2013: 6 publications 2014: 3 publications 2015: 1 publication 2016: 0 publications 2017: 0 publications 2018: 0 publications 2019: 1 publication
1963 2019

550 publications in total across all disciplines

View publications per year as a table
Ian H. Hillier: publications per year, 1963 to 2019
Year Publications
1963 2
1964 3
1965 7
1966 6
1967 2
1968 1
1969 7
1970 20
1971 9
1972 24
1973 19
1974 11
1975 17
1976 12
1977 11
1978 9
1979 19
1980 15
1981 11
1982 12
1983 12
1984 11
1985 12
1986 6
1987 10
1988 12
1989 8
1990 14
1991 6
1992 11
1993 11
1994 13
1995 14
1996 8
1997 21
1998 7
1999 14
2000 11
2001 12
2002 4
2003 13
2004 9
2005 9
2006 18
2007 9
2008 10
2009 12
2010 9
2011 10
2012 6
2013 6
2014 3
2015 1
2016 0
2017 0
2018 0
2019 1
Total 550
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Ian H. Hillier publications per year - data summary

  • Ian H. Hillier, a Chemistry scholar from University of Manchester, has 550 publications recorded across 57 years, from 1963 to 2019.
  • The oldest publication on record dates to 1963 and the most recent to 2019.
  • The most productive year is 1972, with 24 publications.
  • The least productive years with any output are 1968, 2015 and 2019, with 1 publication each.
  • 3 of the 57 years in the span carry no publications at all (2016, 2017 and 2018).
  • The rate of publication averages 9.6 papers per year over the whole span, or 10.2 per year counting only the 54 years with at least one publication.
  • The last 5 years on the chart (2015-2019) hold 2 publications, <1% of the career total.
  • Split into equal eras - 1963-1981: 205 publications (10.8 per year); 1982-2000: 213 publications (11.2 per year); 2001-2019: 132 publications (6.9 per year).
  • Comparing the opening and closing eras, the overall trend of publication is declining.

Ian H. Hillier 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 Ian H. Hillier 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, 541–560 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: 546 publications — 91st percentile

91% 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
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
541–560 148 546
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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Ian H. Hillier publication distribution in Chemistry in 2026 - data summary

  • The chart plots the publication count of all 17,934 Chemistry scientists ranked by Research.com in 2026, grouped into 63 ranges running from 61–80 to 1,295+ publications.
  • Ian H. Hillier, a Chemistry scholar from University of Manchester, records 546 publications - the 91st percentile of the discipline.
  • 91% of ranked Chemistry scientists score the same or lower than Ian H. Hillier, and about 9% score higher.
  • The median of the discipline falls in the 241–260 publications range, and Ian H. Hillier ranks above the median.
  • The most crowded range is 161–180 publications, holding 1,350 scientists (8% of the field).
  • 77% of the field sits in the lowest quarter of the value range (up to 361–380 publications), so the distribution is heavily right-skewed and high scores are rare.
  • The final bar has no upper bound: it groups every scientist with 1,295 publications or more, 100 scientists in all (<1% of the field).

Ian H. Hillier 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 Ian H. Hillier 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, 64–65 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: 65 D-Index — 58th percentile

58% 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
58–59 930
60–61 882
62–63 834
64–65 731 65
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
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Ian H. Hillier D-index placement in Chemistry in 2026 - data summary

  • The chart plots the discipline H-index (D-index) of all 17,934 Chemistry scientists ranked by Research.com in 2026, grouped into 61 ranges running from 40–41 to 159+ D-Index.
  • Ian H. Hillier, a Chemistry scholar from University of Manchester, records 65 D-Index - the 58th percentile of the discipline.
  • 58% of ranked Chemistry scientists score the same or lower than Ian H. Hillier, and about 42% score higher.
  • The median of the discipline falls in the 62–63 D-Index range, and Ian H. Hillier ranks above the median.
  • The most crowded range is 56–57 D-Index, holding 1,051 scientists (6% of the field).
  • 70% of the field sits in the lowest quarter of the value range (up to 70–71 D-Index), so the distribution is heavily right-skewed and high scores are rare.
  • The final bar has no upper bound: it groups every scientist with 159 D-Index or more, 98 scientists in all (<1% of the field).

Overview

Ian H. Hillier is affiliated with the University of Manchester in the United Kingdom. Their academic profile currently reflects a professional engagement primarily tied to this institution.

There are no records of recent papers, frequent co-authors, publication venues, book publications, or specific subjects within their academic contributions listed in the available data. Consequently, no detailed information about individual research topics or the extent of their publications can be provided at this time.

Without specific data on main or subfields of study, or documented topics of work, it is not possible to outline the thematic scope of their scientific inquiries or research focus areas based on the current information.

There is also no record of awards or honors associated with Ian H. Hillier, and the available data indicates that the scientist is currently living.

Best Publications

  • A “Level–Shifting” method for converging closed shell Hartree–Fock wave functions

    V. R. Saunders;I. H. Hillier

  • Computer simulation of zeolite structure and reactivity using embedded cluster methods

    Paul Sherwood;Alex H. de Vries;Simon J. Collins;Stephen P. Greatbanks

  • Catalytic Mechanism of the Enzyme Papain: Predictions with a Hybrid Quantum Mechanical/Molecular Mechanical Potential

    Martin J. Harrison;Neil A. Burton;Ian H. Hillier

  • Theoretical Studies of Transannular Interactions. I. Benzene Excimer Fluorescence and the Singlet States of the Paracyclophanes

    Martin T. Vala;Ian H. Hillier;Stuart A. Rice;Joshua Jortner

  • A quantum Mechanical Investigation of the Conformational Energetics of the Alanine and Glycine Dipeptides in the Gas Phase and in Aqueous Solution

    Ian R. Gould;Wendy D. Cornell;Ian H. Hillier

  • AN AB INITIO STUDY OF TAUTOMERISM OF URACIL, THYMINE, 5-FLUOROURACIL, AND CYTOSINE

    M. J. Scanlan;I. H. Hillier

  • Semi-empirical molecular orbital methods including dispersion corrections for the accurate prediction of the full range of intermolecular interactions in biomolecules

    Jonathan P. McNamara;Ian H. Hillier

  • Can the DFT-D method describe the full range of noncovalent interactions found in large biomolecules?

    Claudio Morgado;Mark A. Vincent;Ian H. Hillier;Xiao Shan

  • Bonding in some donor–acceptor complexes involving boron trifluoride. Study by means of ESCA and molecular orbital calculations

    M. Barber;J. A. Connor;M. F. Guest;I. H. Hillier

  • X-Ray and molecular dynamics studies of concanavalin-A glucoside and mannoside complexes Relating structure to thermodynamics of binding

    Gail M. Bradbrook;Thomas Gleichmann;Stephen J. Harrop;Jarjis Habash

  • MC−SCF study of the Diels-Alder reaction between ethylene and butadiene

    Fernando. Bernardi;Andrea. Bottoni;Martin J. Field;Martin F. Guest

  • Master equation methods for multiple well systems: application to the 1-,2-pentyl system.

    Struan H. Robertson;Michael J. Pilling;Luminita C. Jitariu;Ian H. Hillier

  • Cooperative effects in the structuring of fluoride water clusters: Ab initio hybrid quantum mechanical/molecular mechanical model incorporating polarizable fluctuating charge solvent

    Richard A. Bryce;Mark A. Vincent;Nathaniel O. J. Malcolm;Ian H. Hillier

  • A theoretical interpretation of the bonding, and the photoelectron and ultra-violet spectra of sulphur dioxide

    Unknown

  • Mechanism of Acid Dissociation in Water Clusters: Electronic Structure Studies of (H2O)nHX (n = 4, 7; X = OH, F, HS, HSO3, OOSO2H, OOH·SO2)

    Angela Smith;Mark A. Vincent;Ian H. Hillier

  • What is the initiation step of the Grubbs-Hoveyda olefin metathesis catalyst?

    Ian W. Ashworth;Ian H. Hillier;David J. Nelson;Jonathan M. Percy

  • The geometric structures, vibrational frequencies and redox properties of the actinyl coordination complexes ([AnO(2)(L)(n)](m); An = U, Pu, Np; L = H2O, Cl-, CO32-, CH3CO2-, OH-) in aqueous solution, studied by density functional theory methods

    Jonathan P. Austin;Mahesh Sundararajan;Mark A. Vincent;Ian H. Hillier

  • Aspects of hybrid QM/MM calculations: The treatment of the QM/MM interface region and geometry optimization with an application to chorismate mutase

    Richard J. Hall;Sally A. Hindle;Neil A. Burton;Ian H. Hillier

  • Theoretical studies of the tautomeric equilibriums and isomer energetics of 2-, 3-, and 4-hydroxypyridine

    Martin J. Scanlan;Ian H. Hillier;Alastair A. MacDowell

  • AB INITIO QUANTUM CHEMICAL CALCULATIONS ON URANYL UO22+, PLUTONYL PUO22+, AND THEIR NITRATES AND SULFATES

    J. Simon Craw;Mark A. Vincent;Ian H. Hillier;Andrew L. Wallwork

  • Carbohydrate-protein recognition: molecular dynamics simulations and free energy analysis of oligosaccharide binding to concanavalin A.

    R.A. Bryce;I.H. Hillier;J.H. Naismith

  • Modified avrami equation for the bulk crystallization kinetics of spherulitic polymers

    Unknown

Frequent Co-Authors

Ian R. Gould
Ian R. Gould Arizona State University
Jonathan Clayden
Jonathan Clayden University of Bristol
Martin J. Field
Martin J. Field Centre national de la recherche scientifique, CNRS
Stephen M. Smith
Stephen M. Smith University of Oxford
Jennifer C. Green
Jennifer C. Green University of Oxford
Michael B. Hall
Michael B. Hall Texas A&M University
Stuart A. Rice
Stuart A. Rice University of Chicago
William Clegg
William Clegg Newcastle University
Rein V. Ulijn
Rein V. Ulijn City University of New York
Colin Booth
Colin Booth University of Manchester

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