Roald Hoffmann

66.4k total citations · 54 hit papers
701 papers, 55.0k citations indexed

About

Roald Hoffmann is a scholar working on Organic Chemistry, Materials Chemistry and Inorganic Chemistry. According to data from OpenAlex, Roald Hoffmann has authored 701 papers receiving a total of 55.0k indexed citations (citations by other indexed papers that have themselves been cited), including 263 papers in Organic Chemistry, 205 papers in Materials Chemistry and 173 papers in Inorganic Chemistry. Recurrent topics in Roald Hoffmann's work include Advanced Chemical Physics Studies (128 papers), Organometallic Complex Synthesis and Catalysis (75 papers) and Molecular Junctions and Nanostructures (74 papers). Roald Hoffmann is often cited by papers focused on Advanced Chemical Physics Studies (128 papers), Organometallic Complex Synthesis and Catalysis (75 papers) and Molecular Junctions and Nanostructures (74 papers). Roald Hoffmann collaborates with scholars based in United States, Germany and China. Roald Hoffmann's co-authors include R. B. Woodward, N. W. Ashcroft, William N. Lipscomb, Myung‐Hwan Whangbo, Joseph W. Lauher, Jack C. Thibeault, Thomas A. Albright, Timothy Hughbanks, Angelo R. Rossi and P. Jeffrey Hay and has published in prestigious journals such as Nature, Science and Chemical Reviews.

In The Last Decade

Roald Hoffmann

694 papers receiving 52.3k citations

Hit Papers

The Conservation of Orbital Symmetry 1962 2026 1983 2004 1969 1971 1975 1969 1965 1000 2.0k 3.0k
What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

  1. The Conservation of Orbital Symmetry
    1969 3.2k citations R. B. Woodward, Roald Hoffmann profile →
  2. Interaction of orbitals through space and through bonds
    1971 1.2k citations Roald Hoffmann Accounts of Chemical Research profile →
  3. Orbital interactions in metal dimer complexes
    1975 1.2k citations Roald Hoffmann et al. Journal of the American Chemical Society profile →
  4. Die Erhaltung der Orbitalsymmetrie
    1969 1.1k citations R. B. Woodward, Roald Hoffmann Angewandte Chemie profile →
  5. Stereochemistry of Electrocyclic Reactions
    1965 1.1k citations R. B. Woodward, Roald Hoffmann Journal of the American Chemical Society profile →
  6. Building Bridges Between Inorganic and Organic Chemistry (Nobel Lecture)
    1982 1.0k citations Roald Hoffmann profile →
  7. Structure and chemistry of bis(cyclopentadienyl)-MLn complexes
    1976 962 citations Roald Hoffmann et al. Journal of the American Chemical Society profile →
  8. Theory of Polyhedral Molecules. I. Physical Factorizations of the Secular Equation
    1962 819 citations Roald Hoffmann et al. profile →
  9. The band structure of the tetracyanoplatinate chain
    1978 788 citations Myung‐Hwan Whangbo, Roald Hoffmann Journal of the American Chemical Society profile →
  10. Potential high- T c superconducting lanthanum and yttrium hydrides at high pressure
    2017 705 citations Roald Hoffmann, N. W. Ashcroft et al. profile →
  11. A chemical and theoretical way to look at bonding on surfaces
    1988 691 citations Roald Hoffmann profile →
  12. Benzynes, dehydroconjugated molecules, and the interaction of orbitals separated by a number of intervening sigma bonds
    1968 595 citations Roald Hoffmann et al. Journal of the American Chemical Society profile →
  13. What Do the Kohn−Sham Orbitals and Eigenvalues Mean?
    1999 588 citations Roald Hoffmann et al. Journal of the American Chemical Society profile →
  14. Transition metal pentacoordination
    1975 570 citations Roald Hoffmann et al. profile →
  15. Planar tetracoordinate carbon
    1970 542 citations Roald Hoffmann et al. Journal of the American Chemical Society profile →
  16. How Chemistry and Physics Meet in the Solid State
    1987 524 citations Roald Hoffmann profile →
  17. Conservation of orbital symmetry
    1968 500 citations Roald Hoffmann, R. B. Woodward Accounts of Chemical Research profile →
  18. Carbon-hydrogen and hydrogen-hydrogen activation in transition metal complexes and on surfaces
    1984 476 citations Roald Hoffmann et al. Journal of the American Chemical Society profile →
  19. Bonding capabilities of transition metal carbonyl fragments
    1975 435 citations Roald Hoffmann et al. profile →
  20. Copper(I)-copper(I) interactions. Bonding relationships in d10-d10 systems
    1978 426 citations Roald Hoffmann et al. profile →
  21. Boron Hydrides: LCAO—MO and Resonance Studies
    1962 411 citations Roald Hoffmann et al. profile →
  22. Brücken zwischen Anorganischer und Organischer Chemie (Nobel‐Vortrag)
    1982 396 citations Roald Hoffmann Angewandte Chemie profile →
  23. Chains of trans-edge-sharing molybdenum octahedra: metal-metal bonding in extended systems
    1983 391 citations Roald Hoffmann et al. Journal of the American Chemical Society profile →
  24. Tetrahedral and other M2L6 transition metal dimers
    1976 375 citations Roald Hoffmann et al. Journal of the American Chemical Society profile →
  25. Trimethylene and the addition of methylene to ethylene
    1968 356 citations Roald Hoffmann Journal of the American Chemical Society profile →
  26. CpM(CO)2(ligand) (Cp = cyclopentadienyl, M = metal) complexes
    1979 316 citations Roald Hoffmann et al. Journal of the American Chemical Society profile →
  27. Comparative bonding study of conical fragments
    1976 311 citations Roald Hoffmann et al. profile →
  28. Orbital Symmetries and endo-exo Relationships in Concerted Cycloaddition Reactions
    1965 307 citations Roald Hoffmann, R. B. Woodward Journal of the American Chemical Society profile →
  29. Reductive Elimination of d8-Organotransition Metal Complexes
    1981 298 citations Roald Hoffmann et al. profile →
  30. Do Diradicals Behave Like Radicals?
    2019 296 citations Bo Chen, Roald Hoffmann et al. profile →
  31. Conjugated one and two dimensional polymers
    1979 295 citations Myung‐Hwan Whangbo, Roald Hoffmann et al. Proceedings of the Royal Society of London A Mathematical and Physical Sciences profile →
  32. Extended hückel theory—v
    1966 285 citations Roald Hoffmann profile →
  33. Ethylene complexes. Bonding, rotational barriers, and conformational preferences
    1979 265 citations Thomas A. Albright, Roald Hoffmann et al. Journal of the American Chemical Society profile →
  34. Conformational preferences and rotational barriers in polyene-ML3 transition metal complexes
    1977 256 citations Thomas A. Albright, Roald Hoffmann et al. Journal of the American Chemical Society profile →
  35. Theory of Polyhedral Molecules. III. Population Analyses and Reactivities for the Carboranes
    1962 252 citations Roald Hoffmann et al. profile →
  36. The olefin insertion reaction
    1978 248 citations Roald Hoffmann et al. Journal of the American Chemical Society profile →
  37. Cope rearrangement revisited
    1971 246 citations Roald Hoffmann et al. Journal of the American Chemical Society profile →
  38. Extended Hückel Theory. III. Compounds of Boron and Nitrogen
    1964 238 citations Roald Hoffmann profile →
  39. The norcaradiene - cycloheptatriene equilibrium
    1970 224 citations Roald Hoffmann profile →
  40. Detailed orbital theory of substituent effects. Charge transfer, polarization, and the methyl group
    1974 221 citations Roald Hoffmann et al. Journal of the American Chemical Society profile →
  41. Stabilizing a singlet methylene
    1968 219 citations Roald Hoffmann et al. Journal of the American Chemical Society profile →
  42. Reductive elimination and isomerization of organogold complexes. Theoretical studies of trialkylgold species as reactive intermediates
    1976 217 citations Thomas A. Albright, Roald Hoffmann et al. Journal of the American Chemical Society profile →
  43. Molecular orbital theory of pentacoordinate phosphorus
    1972 215 citations Roald Hoffmann et al. Journal of the American Chemical Society profile →
  44. Organometallic migration reactions
    1978 207 citations Heinz Berke, Roald Hoffmann Journal of the American Chemical Society profile →
  45. Triple-decker sandwiches
    1976 206 citations Roald Hoffmann et al. Journal of the American Chemical Society profile →
  46. Transition-metal complexed olefins: how their reactivity toward a nucleophile relates to their electronic structure
    1981 206 citations Roald Hoffmann et al. Journal of the American Chemical Society profile →
  47. Strong conformational consequences of hyperconjugation
    1972 188 citations Roald Hoffmann et al. Journal of the American Chemical Society profile →
  48. Bond-stretch isomerism and polytopal rearrangements in (CH)5+, (CH)5-, and (CH)4CO
    1972 170 citations Roald Hoffmann et al. Journal of the American Chemical Society profile →
  49. Platinum(0)-platinum(0) dimers. Bonding relationships in a d10-d10 system
    1978 167 citations Roald Hoffmann et al. Journal of the American Chemical Society profile →
  50. Seven-coordination. A molecular orbital exploration of structure, stereochemistry, and reaction dynamics
    1977 166 citations Roald Hoffmann et al. profile →
  51. Valence orbitals of cyclobutane
    1971 165 citations Roald Hoffmann et al. Journal of the American Chemical Society profile →
  52. M3L9(ligand) complexes
    1979 165 citations Roald Hoffmann et al. Journal of the American Chemical Society profile →
  53. Effect of ligand asymmetry on the structure and reactivity of CpMLL'(allyl) (Cp = cyclopentadienyl, M = metal, L = ligand) and -(ethylene) complexes
    1979 164 citations Roald Hoffmann et al. Journal of the American Chemical Society profile →
  54. Bent cis d0 MoO22+ vs. linear trans d0f0 UO22+: a significant role for nonvalence 6p orbitals in uranyl
    1980 156 citations Roald Hoffmann et al. profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Roald Hoffmann United States 119 24.4k 18.0k 15.2k 11.1k 9.0k 701 55.0k
Evert Jan Baerends Netherlands 93 16.8k 0.7× 20.2k 1.1× 16.2k 1.1× 23.0k 2.1× 8.9k 1.0× 368 57.5k
P. Jeffrey Hay United States 61 19.0k 0.8× 18.1k 1.0× 15.9k 1.0× 11.8k 1.1× 7.4k 0.8× 127 50.0k
Michael Dolg Germany 66 13.0k 0.5× 15.2k 0.8× 16.7k 1.1× 13.8k 1.2× 4.6k 0.5× 254 39.4k
Richard F. W. Bader Canada 56 16.7k 0.7× 12.1k 0.7× 9.4k 0.6× 13.8k 1.2× 4.8k 0.5× 94 42.4k
Tom Ziegler Canada 87 21.2k 0.9× 12.6k 0.7× 15.4k 1.0× 13.6k 1.2× 5.9k 0.7× 456 45.6k
Stephan Ehrlich Germany 12 16.8k 0.7× 32.3k 1.8× 12.6k 0.8× 11.1k 1.0× 6.2k 0.7× 15 68.6k
Florian Weigend Germany 49 18.0k 0.7× 16.5k 0.9× 14.1k 0.9× 14.0k 1.3× 6.5k 0.7× 205 50.3k
J. G. Snijders Netherlands 58 10.4k 0.4× 11.2k 0.6× 10.0k 0.7× 11.5k 1.0× 6.2k 0.7× 136 32.8k
Hermann Stoll Germany 56 11.3k 0.5× 11.2k 0.6× 12.1k 0.8× 11.4k 1.0× 4.0k 0.4× 174 32.1k
Reinhart Ahlrichs Germany 79 31.6k 1.3× 30.2k 1.7× 24.8k 1.6× 27.8k 2.5× 11.5k 1.3× 324 91.0k

Countries citing papers authored by Roald Hoffmann

Since Specialization
Citations

This map shows the geographic impact of Roald Hoffmann's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Roald Hoffmann with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Roald Hoffmann more than expected).

Fields of papers citing papers by Roald Hoffmann

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Roald Hoffmann. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Roald Hoffmann. The network helps show where Roald Hoffmann may publish in the future.

Co-authorship network of co-authors of Roald Hoffmann

This figure shows the co-authorship network connecting the top 25 collaborators of Roald Hoffmann. A scholar is included among the top collaborators of Roald Hoffmann based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Roald Hoffmann. Roald Hoffmann is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Sirianni, Dominic A., Xinli Song, Maxwell Zimmerley, et al.. (2023). Variations on the Bergman Cyclization Theme: Electrocyclizations of Ionic Penta-, Hepta-, and Octadiynes. Journal of the American Chemical Society. 145(39). 21408–21418. 2 indexed citations
2.
Zheng, Chong, Roald Hoffmann, Reinhard K. Kremer, et al.. (2021). Synthesis, structure, and magnetic properties of the quaternary oxysulfides Ln 5V3O7S6 (Ln = La, Ce). Zeitschrift für Naturforschung B. 76(10-12). 677–688.
3.
Cai, Weizhao, William A. Coniglio, S. W. Tozer, et al.. (2020). Fermi surface studies of the low-temperature structure of sodium. Physical review. B.. 101(22). 5 indexed citations
4.
Li, Xiang, Tao Wang, Pu Duan, et al.. (2018). Carbon Nitride Nanothread Crystals Derived from Pyridine. Journal of the American Chemical Society. 140(15). 4969–4972. 84 indexed citations
5.
Ye, Xiaoqiu, et al.. (2018). High Hydrides of Scandium under Pressure: Potential Superconductors. The Journal of Physical Chemistry C. 122(11). 6298–6309. 89 indexed citations
6.
Chen, Bo, Tao Wang, Vincent H. Crespi, et al.. (2017). All the Ways To Have Substituted Nanothreads. Journal of Chemical Theory and Computation. 14(2). 1131–1140. 14 indexed citations
7.
Li, Xiang, Maria Baldini, Tao Wang, et al.. (2017). Mechanochemical Synthesis of Carbon Nanothread Single Crystals. Journal of the American Chemical Society. 139(45). 16343–16349. 90 indexed citations
8.
Hoffmann, Roald. (2015). Tension in Chemistry and Its Contents. Accountability in Research. 22(6). 330–345. 6 indexed citations
9.
Lim, Jinhyuk, et al.. (2013). Hydrostatic High-Pressure Studies to 25 GPA on the Model Superconducting Pnictide LaRu2P2. Bulletin of the American Physical Society. 2014. 3 indexed citations
10.
Wen, Xiaodong, Thomas J. Cahill, & Roald Hoffmann. (2010). Exploring Group 14 Structures: 1D to 2D to 3D. Chemistry - A European Journal. 16(22). 6555–6566. 25 indexed citations
11.
Feng, Ji, Richard G. Hennig, N. W. Ashcroft, & Roald Hoffmann. (2008). Emergent reduction of electronic state dimensionality in dense ordered Li-Be alloys. Nature. 451(7177). 445–448. 104 indexed citations
12.
Balakrishnarajan, Musiri M. & Roald Hoffmann. (2003). Polyhedral Boranes with Exo Multiple Bonds: Three‐Dimensional Inorganic Analogues of Quinones. Angewandte Chemie. 115(32). 3907–3911. 2 indexed citations
13.
Yoshizawa, Kazunari, Tokio Yamabe, & Roald Hoffmann. (1997). Possible intermediates for the conversion of methane to methanol on dinuclear iron centers of methane monooxygenase models. New Journal of Chemistry. 21(2). 151–161. 47 indexed citations
14.
Hoffmann, Roald, et al.. (1996). Chemische Kabinettstücke : spektakuläre Experimente und geistreiche Zitate. 1 indexed citations
15.
Tang, Huang, David M. Hoffman, Thomas A. Albright, Haibin Deng, & Roald Hoffmann. (1993). [Ni(PtBu)6] und [Ni(SiH2)6] sind isolobal, verwandt mit [In{Mn(CO)4}5]2− und haben jeweils 16 Valenzelektronen. Angewandte Chemie. 105(11). 1682–1684. 7 indexed citations
16.
Hoffmann, Roald. (1990). Blue as the Sea. American Scientist. 78(4). 308–309. 2 indexed citations
17.
Grunes, L. A., Richard D. Leapman, Charles N. Wilker, Roald Hoffmann, & A. Barry Kunz. (1982). OxygenKnear-edge fine structure: An electron-energy-loss investigation with comparisons to new theory for selected3dTransition-metal oxides. Physical review. B, Condensed matter. 25(12). 7157–7173. 300 indexed citations
18.
Whangbo, Myung‐Hwan, Roald Hoffmann, & R. B. Woodward. (1979). Conjugated one and two dimensional polymers. Proceedings of the Royal Society of London A Mathematical and Physical Sciences. 366(1724). 23–46. 295 indexed citations breakdown →
19.
Krüger, Carl, Janine C. Sekutowski, Heinz Berke, & Roald Hoffmann. (1978). Bis[-µ-methyl-1.3-dimethyl-h 3 -allyl-nickel] Struktur und Bindungsverhältnisse eines Alkyl-verbrückten Ni-Ni-Systems / Bis [-µ-methyl-1,3-dimethyl-h 3 -allyl-nickel] The Bonding in an Alkyl-Bridged Ni-Ni System. Zeitschrift für Naturforschung B. 33(10). 1110–1115. 31 indexed citations
20.
Hoffmann, Roald. (1971). Interaction of orbitals through space and through bonds. Accounts of Chemical Research. 4(1). 1–9. 1215 indexed citations breakdown →

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