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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Chemistry 57 11087 10004 804 723 456 11534

Helge Willner publications per year

The chart shows the history of publications by Helge Willner between 1977 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Helge Willner published across 49 years, from 1977 to 2025, averaging 9.6 papers a year. Output peaked at 23 publications in 1994. 2 of the 468 publications appeared in the last two years.

No. of publications
5 10 15 20
Bar chart. Horizontal axis: year, 1977 to 2025. Vertical axis: number of publications, 0 to 23. Peak 23 publications in 1994. 1977: 2 publications 1978: 3 publications 1979: 4 publications 1980: 2 publications 1981: 4 publications 1982: 2 publications 1983: 4 publications 1984: 4 publications 1985: 2 publications 1986: 1 publication 1987: 8 publications 1988: 9 publications 1989: 11 publications 1990: 5 publications 1991: 13 publications 1992: 18 publications 1993: 13 publications 1994: 23 publications 1995: 15 publications 1996: 13 publications 1997: 15 publications 1998: 6 publications 1999: 6 publications 2000: 11 publications 2001: 14 publications 2002: 18 publications 2003: 22 publications 2004: 22 publications 2005: 21 publications 2006: 19 publications 2007: 19 publications 2008: 10 publications 2009: 18 publications 2010: 18 publications 2011: 17 publications 2012: 16 publications 2013: 7 publications 2014: 7 publications 2015: 18 publications 2016: 19 publications 2017: 2 publications 2018: 2 publications 2019: 0 publications 2020: 0 publications 2021: 1 publication 2022: 2 publications 2023: 0 publications 2024: 0 publications 2025: 2 publications
1977 2025

468 publications in total across all disciplines

View publications per year as a table
Helge Willner: publications per year, 1977 to 2025
Year Publications
1977 2
1978 3
1979 4
1980 2
1981 4
1982 2
1983 4
1984 4
1985 2
1986 1
1987 8
1988 9
1989 11
1990 5
1991 13
1992 18
1993 13
1994 23
1995 15
1996 13
1997 15
1998 6
1999 6
2000 11
2001 14
2002 18
2003 22
2004 22
2005 21
2006 19
2007 19
2008 10
2009 18
2010 18
2011 17
2012 16
2013 7
2014 7
2015 18
2016 19
2017 2
2018 2
2019 0
2020 0
2021 1
2022 2
2023 0
2024 0
2025 2
Total 468
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Helge Willner publications per year - data summary

  • Helge Willner, a Chemistry scholar from University of Wuppertal, has 468 publications recorded across 49 years, from 1977 to 2025.
  • The oldest publication on record dates to 1977 and the most recent to 2025.
  • The most productive year is 1994, with 23 publications.
  • The least productive years with any output are 1986 and 2021, with 1 publication each.
  • 4 of the 49 years in the span carry no publications at all (2019, 2020, 2023 and 2024).
  • The rate of publication averages 9.6 papers per year over the whole span, or 10.4 per year counting only the 45 years with at least one publication.
  • The last 5 years on the chart (2021-2025) hold 5 publications, 1% of the career total.
  • Split into equal eras - 1977-1993: 105 publications (6.2 per year); 1994-2010: 270 publications (15.9 per year); 2011-2025: 93 publications (6.2 per year).
  • Comparing the opening and closing eras, the overall trend of publication is broadly steady.

Helge Willner 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 Helge Willner 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, 441–460 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: 456 publications — 85th percentile

85% 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
441–460 270 456
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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Helge Willner 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.
  • Helge Willner, a Chemistry scholar from University of Wuppertal, records 456 publications - the 85th percentile of the discipline.
  • 85% of ranked Chemistry scientists score the same or lower than Helge Willner, and about 15% score higher.
  • The median of the discipline falls in the 241–260 publications range, and Helge Willner 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).

Helge Willner 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 Helge Willner 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
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Helge Willner 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.
  • Helge Willner, a Chemistry scholar from University of Wuppertal, records 57 D-Index - the 39th percentile of the discipline.
  • 39% of ranked Chemistry scientists score the same or lower than Helge Willner, and about 61% score higher.
  • The median of the discipline falls in the 62–63 D-Index range, and Helge Willner ranks below 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

Helge Willner is affiliated with the University of Wuppertal in Germany. Their work spans several interconnected fields, primarily focusing on chemistry, pharmacology, toxicology, pharmaceutics, physics, and astronomy. Their research contributions collectively emphasize topics in pharmaceutical science, atomic and molecular physics and optics, physical and theoretical chemistry, spectroscopy, and ecology.

The scientist's recent body of work includes papers published from 2021 through projected publications in 2025, covering a range of chemical and environmental studies.

  • Preparation of FC(S)SF, FC(S)SeF and FC(Se)SeF through matrix photochemical reactions of F2 with CS2, SCSe, and CSe2 (2021), Physical Chemistry Chemical Physics
  • Ar-Matrix Studies of the Photochemical Reaction between CS2 and ClF: Prereactive Complexes and Bond Isomerism of the Photoproducts (2022), Photochem
  • Synthesis, characterization and gas phase conformational properties of chlorodifluoroacetylsulfenyl chloride, CF2ClC(O)SCl (2022), Journal of Molecular Structure
  • Placing environmental DNA monitoring for new detections into perspective: Fishes in the Milwaukee River, Wisconsin (2025), Journal of Wildlife Management
  • Unveiling CF3SOCH3: synthesis, spectroscopic characterization, and conformational behavior of S-(trifluoromethyl)-O-(methyl) thioperoxide (2025), New Journal of Chemistry

Willner's research topics reflect a focus on chemical processes involving fluorine compounds, photochemistry, and environmental DNA studies applied in biodiversity monitoring. Key topics include:

  • Fluorine in Organic Chemistry
  • Advanced Chemical Physics Studies
  • Inorganic Fluorides and Related Compounds
  • Photochemistry and Electron Transfer Studies
  • Molecular Spectroscopy and Structure
  • Environmental DNA in Biodiversity Studies
  • Identification and Quantification in Food

Their frequent collaborators consist of several researchers working within overlapping domains:

  • Carlos O. Della Védova
  • Rosana M. Romano
  • Mauricio F. Erben
  • Yanina B. Bava
  • Melina V. Cozzarín

Willner's research outputs have been published in various scientific venues including:

  • Physical Chemistry Chemical Physics
  • Photochem
  • Journal of Molecular Structure
  • Journal of Wildlife Management
  • New Journal of Chemistry

This diverse publication record illustrates the interdisciplinary nature of their work, bridging chemistry, environmental studies, and applied physics methodologies.

Best Publications

  • New ionic liquids with tris(perfluoroalkyl)trifluorophosphate (FAP) anions

    N.V. Ignat’ev;U. Welz-Biermann;A. Kucheryna;G. Bissky

  • Equilibrium acidities of superacids.

    Agnes Kütt;Toomas Rodima;Jaan Saame;Elin Raamat

  • Homoleptic Metal Carbonyl Cations of the Electron‐Rich Metals: Their Generation in Superacid Media Together with Their Spectroscopic and Structural Characterization

    Helge Willner;Friedhelm Aubke

  • Bis(carbonyl)gold(I) undecafluorodiantimonate(V), [Au(CO)2][Sb2F11]: synthesis, vibrational, and carbon-13 NMR study and the molecular structure of bis(acetonitrile)gold(I) hexafluoroantimonate(V), [Au(NCCH3)2][SbF6]

    H. Willner;J. Schaebs;G. Hwang;F. Mistry

  • Tris(trifluoromethyl)borane carbonyl, (CF3)3BCO-synthesis, physical, chemical and spectroscopic properties, gas phase, and solid state structure.

    Maik Finze;Eduard Bernhardt;Annegret Terheiden;Michael Berkei

  • Die Tetracyanoborate M[B(CN)4], M = [Bu4N]+, Ag+, K+

    E. Bernhardt;G. Henkel;H. Willner

  • When Do Interacting Atoms Form a Chemical Bond? Spectroscopic Measurements and Theoretical Analyses of Dideuteriophenanthrene

    Stefan Grimme;Christian Mück-Lichtenfeld;Gerhard Erker;Gerald Kehr

  • [Me3Si][R-CB11F11]—Synthesis and Properties

    Torsten Küppers;Eduard Bernhardt;Reint Eujen;Helge Willner

  • Synthesis and Properties of the Tetrakis(trifluoromethyl)borate Anion, [B(CF3)4]−: Structure Determination of Cs[B(CF3)4] by Single-Crystal X-ray Diffraction

    Eduard Bernhardt;Gerald Henkel;Helge Willner;Gottfried Pawelke

  • Reaction of carbon monoxide in the super acid HSO3F-Au(SO3F)3, and the gold(I)bis(carbonyl)cation [Au(CO)2]+. Isolation and characterization of gold(I) carbonyl fluorosulfate, Au(CO)SO3F

    Helge Willner;F. Aubke

  • Eine effiziente Synthese von Tetracyanoboraten durch Sinterprozesse

    E. Bernhardt;M. Finze;Helge Willner

  • Tetracyanoborate Salts M[B(CN)4] with M = Singly Charged Cations: Properties and Structures

    Torsten Kuppers;Eduard Bernhardt;Helge Willner;Henning W. Rohm

  • "Umpolung" at boron by reduction of [B(CN)4]- and formation of the dianion [B(CN)3]2-.

    Eduard Bernhardt;Vera Bernhardt-Pitchougina;Helge Willner;Nikolai Ignatiev

  • Syntheses and Vibrational and (13)C MAS-NMR Spectra of Bis(carbonyl)mercury(II) Undecafluorodiantimonate(V) ([Hg(CO)(2)][Sb(2)F(11)](2)) and of Bis(carbonyl)dimercury(I) Undecafluorodiantimonate ([Hg(2)(CO)(2)][Sb(2)F(11)](2)) and the Molecular Structure of [Hg(CO)(2)][Sb(2)F(11)](2).

    M. Bodenbinder;G. Balzer-Jöllenbeck;H. Willner;R. J. Batchelor

  • σ-Bonded Metal Carbonyl Cations and Their Derivatives: Syntheses and Structural, Spectroscopic, and Bonding Principles†

    Helge Willner;Friedhelm Aubke

  • Cationic Iridium(III) Carbonyl Complexes: [Ir(CO)6]3+ and [Ir(CO)5Cl]2+

    Christian Bach;Helge Willner;Friedhelm Aubke;Changqing Wang

  • PHOTOCHEMICAL ISOMERIZATION OF METAL ETHENE TO METAL VINYL HYDRIDE COMPLEXES : A MATRIX-ISOLATION AND SOLUTION NMR STUDY

    Tanachat W. Bell;David M. Haddleton;Andrew McCamley;Martin G. Partridge

  • Structure and conformation of α,α,α-trifluoroanisol, C 6 H 5 OCF 3

    Daniela Federsel;Angelika Herrmann;Dines Christen;Stefan Sander

  • Superelectrophilic Tetrakis(carbonyl)palladium(II)- and -platinum(II) Undecafluorodiantimonate(V), [Pd(CO)4][Sb2F11]2 and [Pt(CO)4][Sb2F11]2: Syntheses, Physical and Spectroscopic Properties, Their Crystal, Molecular, and Extended Structures, and Density Functional Calculations: An Experimental, Computational, and Comparative Study

    Helge Willner;Matthias Bodenbinder;Raimund Bröchler;Germaine Hwang

  • Die Reaktionen von M[BF4] (M = Li, K) und (C2H5)2O·BF3 mit (CH3)3SiCN. Bildung von M[BFx>(CN)4—x] (M = Li, K; x = 1, 2) und (CH3)3SiNCBFx(CN)3—x, (x = 0, 1)

    Eduard Bernhardt;Michael Berkei;Helge Willner;Markus Schürmann

  • Vibrational and electronic spectra of chlorine dioxide, OClO, and chlorine superoxide ClOO, isolated in cryogenic matrixes

    Unknown

Frequent Co-Authors

Christian W. Lehmann
Christian W. Lehmann Max Planck Society
Joseph S. Francisco
Joseph S. Francisco University of Pennsylvania
Walter Thiel
Walter Thiel Max Planck Society
James Trotter
James Trotter University of British Columbia
Steven J. Rettig
Steven J. Rettig University of British Columbia
Wolfram Sander
Wolfram Sander Ruhr University Bochum
Konrad Seppelt
Konrad Seppelt Freie Universität Berlin
John F. Stanton
John F. Stanton University of Florida
Roland Boese
Roland Boese University of Duisburg-Essen
Mark G. Allen
Mark G. Allen University of Pennsylvania

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