Helmut Sitzmann

3.1k total citations
100 papers, 2.6k citations indexed

About

Helmut Sitzmann is a scholar working on Organic Chemistry, Inorganic Chemistry and Electronic, Optical and Magnetic Materials. According to data from OpenAlex, Helmut Sitzmann has authored 100 papers receiving a total of 2.6k indexed citations (citations by other indexed papers that have themselves been cited), including 95 papers in Organic Chemistry, 54 papers in Inorganic Chemistry and 19 papers in Electronic, Optical and Magnetic Materials. Recurrent topics in Helmut Sitzmann's work include Organometallic Complex Synthesis and Catalysis (77 papers), Synthesis and characterization of novel inorganic/organometallic compounds (42 papers) and Coordination Chemistry and Organometallics (26 papers). Helmut Sitzmann is often cited by papers focused on Organometallic Complex Synthesis and Catalysis (77 papers), Synthesis and characterization of novel inorganic/organometallic compounds (42 papers) and Coordination Chemistry and Organometallics (26 papers). Helmut Sitzmann collaborates with scholars based in Germany, United States and United Kingdom. Helmut Sitzmann's co-authors include Gotthelf Wolmershäuser, Otto J. Scherer, Roland Boese, Yu Sun, Marc D. Walter, Frank A. Weber, Michael Ruck, Yanhua Lan, Annie K. Powell and Oliver Schmitt and has published in prestigious journals such as Journal of the American Chemical Society, Angewandte Chemie International Edition and Macromolecules.

In The Last Decade

Helmut Sitzmann

98 papers receiving 2.6k citations

Author Peers

Peers are selected by citation overlap in the author's most active subfields. citations · hero ref

Author Last Decade Papers Cites
Helmut Sitzmann 2.2k 1.6k 580 467 139 100 2.6k
M. Niemeyer 1.8k 0.8× 1.4k 0.9× 595 1.0× 597 1.3× 501 3.6× 93 2.5k
Tetsuro Murahashi 1.6k 0.7× 938 0.6× 494 0.9× 578 1.2× 269 1.9× 72 2.1k
Eduardo Sola 2.3k 1.1× 1.5k 0.9× 468 0.8× 421 0.9× 302 2.2× 73 2.9k
Ruth A. Bartlett 2.1k 1.0× 1.8k 1.1× 238 0.4× 330 0.7× 121 0.9× 49 2.5k
G. Linti 1.7k 0.8× 1.8k 1.2× 243 0.4× 656 1.4× 218 1.6× 120 2.7k
David J. Berg 1.2k 0.6× 769 0.5× 366 0.6× 524 1.1× 140 1.0× 66 1.6k
Sergey N. Konchenko 1.6k 0.7× 1.3k 0.8× 776 1.3× 665 1.4× 230 1.7× 183 2.4k
F. Nief 1.9k 0.9× 1.4k 0.9× 397 0.7× 575 1.2× 131 0.9× 73 2.3k
Kartik Chandra Mondal 2.7k 1.3× 2.2k 1.4× 1.2k 2.0× 1.1k 2.4× 242 1.7× 118 4.0k
Daniel Grandjean 926 0.4× 949 0.6× 578 1.0× 488 1.0× 333 2.4× 64 1.6k

Countries citing papers authored by Helmut Sitzmann

Since Specialization
Citations

This map shows the geographic impact of Helmut Sitzmann'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 Helmut Sitzmann with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Helmut Sitzmann more than expected).

Fields of papers citing papers by Helmut Sitzmann

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Helmut Sitzmann. 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 Helmut Sitzmann. The network helps show where Helmut Sitzmann may publish in the future.

Co-authorship network of co-authors of Helmut Sitzmann

This figure shows the co-authorship network connecting the top 25 collaborators of Helmut Sitzmann. A scholar is included among the top collaborators of Helmut Sitzmann 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 Helmut Sitzmann. Helmut Sitzmann 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.
Sitzmann, Helmut, et al.. (2024). Merging Cobalt-Catalyzed C–H Activation with the Mannich Reaction: A Modular Approach to α-Substituted N -Sulfonyl Amines. The Journal of Organic Chemistry. 89(10). 6903–6914. 3 indexed citations
2.
Manolikakes, Georg, et al.. (2024). Cobalt-Catalyzed Three-Component Synthesis of α-Substituted N-Sulfonyl Amines via C(sp2)–H Bond Activation. Synthesis. 57(5). 1015–1024. 1 indexed citations
3.
Sun, Yu, et al.. (2021). Chromium(II) Alkylcyclopentadienyl Complexes with Carbon or Hydride Donor Ligands. Organometallics. 40(17). 2951–2969. 6 indexed citations
4.
Sun, Yu, Jens Langer, Tobias Böttcher, et al.. (2018). Paramagnetic Chromium(II) Complexes and Chromium(IV) Nitrides with Bulky Alkylcyclopentadienyl Ligands. European Journal of Inorganic Chemistry. 2018(40). 4472–4480. 4 indexed citations
5.
Bauer, Heiko, et al.. (2015). Benzylidyne Bridges from Diphenylacetylene and a Methylidyne Bridge from Methylmagnesium Chloride. Organometallics. 34(3). 644–652. 17 indexed citations
6.
Glockner, A., Heiko Bauer, Thomas Bannenberg, et al.. (2012). How big is a Cp? Cycloheptatrienyl zirconium complexes with bulky cyclopentadienyl and indenyl ligands. Dalton Transactions. 41(22). 6614–6614. 53 indexed citations
7.
Sun, Yu, et al.. (2011). High‐Spin Cyclopentadienyl Complexes: A Single‐Molecule Magnet Based on the Aryl‐Iron(II) Cyclopentadienyl Type. Chemistry - A European Journal. 17(17). 4700–4704. 170 indexed citations
8.
Pammer, Frank, et al.. (2009). Exploring the Concept of Aromaticity on Complexes of a Fourfold Benzannulated Cyclopentadienyl Ligand. Chemistry - A European Journal. 16(4). 1265–1270. 15 indexed citations
9.
Pammer, Frank, et al.. (2008). Dibenzo[c,g]fluorenyliron: An Organometallic Relative of Pentahelicene. Angewandte Chemie International Edition. 47(17). 3271–3274. 31 indexed citations
10.
Zimmermann, Melanie, Karl W. Törnroos, Helmut Sitzmann, & Reiner Anwander. (2008). Half‐Sandwich Bis(tetramethylaluminate) Complexes of the Rare‐Earth Metals: Synthesis, Structural Chemistry, and Performance in Isoprene Polymerization. Chemistry - A European Journal. 14(24). 7266–7277. 76 indexed citations
11.
Walter, Marc D., Frank A. Weber, Gotthelf Wolmershäuser, & Helmut Sitzmann. (2006). A Hexanuclear Ytterbium Complex Anion with Fourteen Azido Ligands. Angewandte Chemie International Edition. 45(12). 1903–1905. 19 indexed citations
12.
Wolmershäuser, Gotthelf, et al.. (2005). Phenolate Complexes of Iron(II) in Different Spin States. Angewandte Chemie International Edition. 44(17). 2597–2599. 37 indexed citations
13.
Peruzzini, Maurizio, et al.. (2004). Functionalization of white phosphorus in the coordination sphere of transition metal complexes. Journal of Organometallic Chemistry. 689(24). 4319–4331. 82 indexed citations
14.
Sitzmann, Helmut. (2002). Das Decaphosphatitanocen-Dianion– ein neues Kapitel in der Chemie nackter Polyphosphorliganden. Angewandte Chemie. 114(15). 2847–2848.
15.
Sitzmann, Helmut, Marc D. Walter, & Gotthelf Wolmershäuser. (2002). A Triple-Decker Sandwich Complex of Barium. Angewandte Chemie International Edition. 41(13). 2315–2316. 25 indexed citations
16.
Sitzmann, Helmut. (2002). The Decaphosphatitanocene Dianion—A New Chapter in the Chemistry of Naked Polyphosphorus Ligands. Angewandte Chemie International Edition. 41(15). 2723–2724. 4 indexed citations
17.
Richard, Philippe, et al.. (2002). Cyclopentadienylmolybdenum(VI) and Molybdenum(V) Oxo Chemistry: New Synthetic and Structural Features. European Journal of Inorganic Chemistry. 2002(6). 1415–1424. 33 indexed citations
18.
Sitzmann, Helmut, et al.. (1998). Synthesis of Symmetric Metallocenes from Metallic Calcium, Strontium, or Barium and Pentaisopropylcyclopentadienyl Radicals. Angewandte Chemie International Edition. 37(22). 3113–3116. 41 indexed citations
19.
Sitzmann, Helmut, et al.. (1997). Zwei strukturell verschiedenartige Stibocenium-Kationen. Journal of Organometallic Chemistry. 527(1-2). 209–213. 18 indexed citations
20.
Scherer, Otto J., Helmut Sitzmann, & Gotthelf Wolmershäuser. (1985). Hexaphosphabenzene as Complex Ligand. Angewandte Chemie International Edition in English. 24(4). 351–353. 149 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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