World's Best Scientists 2026 revealed!

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Chemistry 43 17095 15446 1238 1092 158 8677

Kallol Ray publications per year

The chart shows the history of publications by Kallol Ray between 1964 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Kallol Ray published across 62 years, from 1964 to 2025, averaging 4 papers a year. Output peaked at 24 publications in 2005. 26 of the 247 publications appeared in the last two years.

No. of publications
5 10 15 20
Bar chart. Horizontal axis: year, 1964 to 2025. Vertical axis: number of publications, 0 to 24. Peak 24 publications in 2005. 1964: 1 publication 1965: 0 publications 1966: 0 publications 1967: 0 publications 1968: 0 publications 1969: 0 publications 1970: 0 publications 1971: 0 publications 1972: 0 publications 1973: 0 publications 1974: 0 publications 1975: 0 publications 1976: 0 publications 1977: 0 publications 1978: 0 publications 1979: 0 publications 1980: 0 publications 1981: 0 publications 1982: 0 publications 1983: 0 publications 1984: 0 publications 1985: 0 publications 1986: 0 publications 1987: 0 publications 1988: 0 publications 1989: 0 publications 1990: 0 publications 1991: 0 publications 1992: 0 publications 1993: 0 publications 1994: 0 publications 1995: 0 publications 1996: 1 publication 1997: 3 publications 1998: 1 publication 1999: 0 publications 2000: 0 publications 2001: 0 publications 2002: 0 publications 2003: 1 publication 2004: 0 publications 2005: 24 publications 2006: 5 publications 2007: 8 publications 2008: 4 publications 2009: 0 publications 2010: 1 publication 2011: 8 publications 2012: 5 publications 2013: 9 publications 2014: 6 publications 2015: 8 publications 2016: 22 publications 2017: 20 publications 2018: 16 publications 2019: 7 publications 2020: 22 publications 2021: 21 publications 2022: 10 publications 2023: 18 publications 2024: 14 publications 2025: 12 publications
1964 2025

247 publications in total across all disciplines

View publications per year as a table
Kallol Ray: publications per year, 1964 to 2025
Year Publications
1964 1
1965 0
1966 0
1967 0
1968 0
1969 0
1970 0
1971 0
1972 0
1973 0
1974 0
1975 0
1976 0
1977 0
1978 0
1979 0
1980 0
1981 0
1982 0
1983 0
1984 0
1985 0
1986 0
1987 0
1988 0
1989 0
1990 0
1991 0
1992 0
1993 0
1994 0
1995 0
1996 1
1997 3
1998 1
1999 0
2000 0
2001 0
2002 0
2003 1
2004 0
2005 24
2006 5
2007 8
2008 4
2009 0
2010 1
2011 8
2012 5
2013 9
2014 6
2015 8
2016 22
2017 20
2018 16
2019 7
2020 22
2021 21
2022 10
2023 18
2024 14
2025 12
Total 247
Download as CSV

Kallol Ray 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 Kallol Ray 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, 141–160 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: 158 publications — 17th percentile

17% 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 1,218 158
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
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
Download as CSV

Kallol Ray 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 Kallol Ray 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, 42–43 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: 43 D-Index — 5th percentile

5% 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 43
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
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

Overview

Kallol Ray is a researcher affiliated with Humboldt-Universität zu Berlin in Germany. Their work primarily focuses on the intersection of materials science and chemistry, with significant contributions to the fields of materials chemistry and inorganic chemistry. Their research spans various subfields including oncology, renewable energy, sustainability and the environment, as well as organic chemistry.

The main topics addressed in Kallol Ray's work include metal-catalyzed oxygenation mechanisms, crystallization and solubility studies, and the use of X-ray diffraction in crystallography. Additional areas of study encompass metal complexes synthesis and properties, porphyrin and phthalocyanine chemistry, oxidative organic chemistry reactions, and vanadium and halogenation chemistry.

Ray has authored numerous papers published in a range of scientific journals. Notable recent publications include:

  • Iron and manganese oxo complexes, oxo wall and beyond (2020), Nature Reviews Chemistry
  • Transition metal-mediated O-O bond formation and activation in chemistry and biology (2021), Chemical Society Reviews
  • O2 and H2O2 activations at dinuclear Mn and Fe active sites (2020), Coordination Chemistry Reviews
  • Stoichiometric Formation of an Oxoiron(IV) Complex by a Soluble Methane Monooxygenase Type Activation of O2 at an Iron(II)-Cyclam Center (2020), Journal of the American Chemical Society
  • A Pseudotetrahedral Terminal Oxoiron(IV) Complex: Mechanistic Promiscuity in C−H Bond Oxidation Reactions (2020), Angewandte Chemie International Edition

Their frequent co-authors include Holger Dau, Peter Hildebrandt, Stefan Mebs, Beatrice Battistella, and Uwe Kuhlmann.

Ray's publications are often featured in specific scholarly venues. The most common publication outlets include:

  • The Cambridge Structural Database
  • Angewandte Chemie International Edition
  • Angewandte Chemie
  • Journal of the American Chemical Society
  • Zeitschrift für anorganische und allgemeine Chemie

Their research output reflects a strong emphasis on understanding catalytic processes involving metal complexes and the development of new materials through detailed crystallographic analysis. This body of work integrates experimental methods focused on X-ray diffraction and solubility with a chemical perspective on oxidative and oxygenation reactions.

Best Publications

  • The biology and chemistry of high-valent iron–oxo and iron–nitrido complexes

    Johannes Hohenberger;Kallol Ray;Karsten Meyer

  • Status of reactive non-heme metal-oxygen intermediates in chemical and enzymatic reactions.

    Kallol Ray;Florian Felix Pfaff;Bin Wang;Wonwoo Nam

  • Axial ligand tuning of a nonheme iron(IV)–oxo unit for hydrogen atom abstraction

    Chivukula V. Sastri;Jimin Lee;Kyungeun Oh;Yoon Jin Lee

  • Joint spectroscopic and theoretical investigations of transition metal complexes involving non-innocent ligands.

    Kallol Ray;Taras Petrenko;Karl Wieghardt;Frank Neese

  • Heme and Nonheme High-Valent Iron and Manganese Oxo Cores in Biological and Abiological Oxidation Reactions

    Mian Guo;Teresa Corona;Kallol Ray;Wonwoo Nam;Wonwoo Nam

  • Electronic structure of square planar bis(benzene-1,2-dithiolato)metal complexes [M(L)(2)](z) (z = 2-, 1-, 0; M = Ni, Pd, Pt, Cu, Au): an experimental, density functional, and correlated ab initio study.

    Kallol Ray;Thomas Weyhermüller;Frank Neese;Karl Wieghardt

  • Oxidation Reactions with Bioinspired Mononuclear Non-Heme Metal-Oxo Complexes.

    Xenia Engelmann;Inés Monte-Pérez;Kallol Ray

  • Molecular and electronic structure of four- and five-coordinate cobalt complexes containing two o-phenylenediamine- or two o-aminophenol-type ligands at various oxidation levels: an experimental, density functional, and correlated ab initio study.

    Eckhard Bill;Eberhard Bothe;Phalguni Chaudhuri;Krzysztof Chlopek

  • Iron and manganese oxo complexes, oxo wall and beyond

    Virginia A. Larson;Beatrice Battistella;Kallol Ray;Nicolai Lehnert

  • The Electronic Structure of the Isoelectronic, Square-Planar Complexes [FeII(L)2]2- and [CoIII(LBu)2]- (L2- and (LBu)2- = Benzene-1,2-dithiolates): An Experimental and Density Functional Theoretical Study

    Kallol Ray;Ameerunisha Begum;Thomas Weyhermüller;Stergios Piligkos

  • Description of the Ground‐State Covalencies of the Bis(dithiolato) Transition‐Metal Complexes from X‐ray Absorption Spectroscopy and Time‐Dependent Density‐Functional Calculations

    Kallol Ray;Serena DeBeer George;Edward I. Solomon;Karl Wieghardt

  • Characterization of Porphyrin-Co(III)-‘Nitrene Radical’ Species Relevant in Catalytic Nitrene Transfer Reactions

    Monalisa Goswami;Volodymyr Lyaskovskyy;Sérgio R. Domingos;Wybren Jan Buma

  • Transition metal-mediated O-O bond formation and activation in chemistry and biology

    Xue Peng Zhang;Anirban Chandra;Yong Min Lee;Rui Cao

  • Nonheme oxoiron(IV) complexes of pentadentate N5 ligands: spectroscopy, electrochemistry, and oxidative reactivity

    Dong Wang;Kallol Ray;Michael J. Collins;Michael J. Collins;Erik R. Farquhar

  • Synthesis and reactivity of a mononuclear non-haem cobalt(IV)-oxo complex.

    Bin Wang;Yong Min Lee;Woon Young Tcho;Samat Tussupbayev

  • Terminal Oxo and Imido Transition‐Metal Complexes of Groups 9–11

    Kallol Ray;Florian Heims;Florian Felix Pfaff

  • Spectroscopic Capture and Reactivity of a Low-Spin Cobalt(IV)-Oxo Complex Stabilized by Binding Redox-Inactive Metal Ions†

    Seungwoo Hong;Florian Felix Pfaff;Eunji Kwon;Yong Wang

  • An Oxocobalt(IV) Complex Stabilized by Lewis Acid Interactions with Scandium(III) Ions

    Florian Felix Pfaff;Subrata Kundu;Marcel Risch;Shanthi Pandian

  • Dioxygen activation chemistry by synthetic mononuclear nonheme iron, copper and chromium complexes

    Seungwoo Hong;Yong-Min Lee;Kallol Ray;Wonwoo Nam

  • Redox-Noninnocence of the S,S‘-Coordinated Ligands in Bis(benzene-1,2-dithiolato)iron Complexes

    Kallol Ray;Eckhard Bill;Thomas Weyhermüller;Karl Wieghardt

  • Vibrational markers for the open-shell character of transition metal bis-dithiolenes: an infrared, resonance raman, and quantum chemical study.

    Taras Petrenko;Kallol Ray;Karl E. Wieghardt;Frank Neese

Frequent Co-Authors

Holger Dau
Holger Dau Freie Universität Berlin
Wonwoo Nam
Wonwoo Nam Ewha Womans University
Peter Hildebrandt
Peter Hildebrandt Technical University of Berlin
Eckhard Bill
Eckhard Bill Max Planck Society
Karl Wieghardt
Karl Wieghardt Max Planck Society
Frank Neese
Frank Neese Max Planck Society
Lawrence Que
Lawrence Que University of Minnesota
Matthias Driess
Matthias Driess Technical University of Berlin
Shenglai Yao
Shenglai Yao Technical University of Berlin
Yong-Min Lee
Yong-Min Lee Yonsei University

If you think any of the details on this page are incorrect, let us know.

Report an issue

We appreciate your kind effort to assist us to improve this page, it would be helpful providing us with as much detail as possible in the text box below:

Related Online Degrees & Career Pathways

For those interested in Chemistry, exploring related online degrees can open doors to diverse career pathways. An online paralegal associate degree offers an affordable, flexible entry point into law-related fields that value analytical skills gained from scientific study.

The pharmaceutical industry is another promising avenue. Becoming a pharmaceutical sales representative requires strong knowledge of chemistry and communication skills, with salary prospects detailed in the guide on pharmaceutical rep salary. This role bridges science and business effectively.

For a more clinical path, earning a Doctor of Pharmacy degree prepares students for licensure as a pharmacist. The step-by-step process on how do you become a pharmacist breaks down essential education and training requirements.

Lastly, careers in forensic science, such as becoming an autopsy technician, blend chemistry expertise with investigative work. Insights on job outlook and compensation can be found in the overview of autopsy tech salary.

Best Scientists Citing Kallol Ray

Trending Scientists

Recently Published Articles