S. Steffens

1.1k total citations
20 papers, 386 citations indexed

About

S. Steffens is a scholar working on Pharmacology, Organic Chemistry and Astronomy and Astrophysics. According to data from OpenAlex, S. Steffens has authored 20 papers receiving a total of 386 indexed citations (citations by other indexed papers that have themselves been cited), including 6 papers in Pharmacology, 5 papers in Organic Chemistry and 5 papers in Astronomy and Astrophysics. Recurrent topics in S. Steffens's work include Microbial Natural Products and Biosynthesis (6 papers), Marine Sponges and Natural Products (5 papers) and Solar and Space Plasma Dynamics (4 papers). S. Steffens is often cited by papers focused on Microbial Natural Products and Biosynthesis (6 papers), Marine Sponges and Natural Products (5 papers) and Solar and Space Plasma Dynamics (4 papers). S. Steffens collaborates with scholars based in Germany, Belgium and France. S. Steffens's co-authors include Gerhard Lang, Gerhard Bringmann, Karsten Schaumann, Jörg Mühlbacher, Wernér E.G. Müller, Johannes F. Imhoff, E Günther, Jutta Wiese, Jürgen Heck and Sanja Perović‐Ottstadt and has published in prestigious journals such as Tetrahedron, Phytochemistry and Organometallics.

In The Last Decade

S. Steffens

19 papers receiving 368 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
S. Steffens Germany	9	202	155	150	83	27	20	386
Yuka Nojiri Japan	8	264 1.3×	228 1.5×	138 0.9×	105 1.3×	27 1.0×	11	505
Sarah J. Robinson United States	11	211 1.0×	168 1.1×	185 1.2×	235 2.8×	12 0.4×	18	493
Timothy McAfoos United States	8	304 1.5×	167 1.1×	95 0.6×	168 2.0×	16 0.6×	9	434
Katsuhiko Kushida Japan	15	211 1.0×	356 2.3×	104 0.7×	184 2.2×	22 0.8×	31	623
Ping Jiao United States	9	188 0.9×	280 1.8×	84 0.6×	117 1.4×	15 0.6×	14	489
Eric R. O. Siwu Japan	13	81 0.4×	251 1.6×	91 0.6×	262 3.2×	23 0.9×	18	475
Stelamar Romminger Brazil	7	120 0.6×	296 1.9×	79 0.5×	155 1.9×	29 1.1×	7	454
Douglas W. Phillipson United States	13	93 0.5×	143 0.9×	55 0.4×	261 3.1×	23 0.9×	15	502
Colin K. Skepper United States	13	111 0.5×	371 2.4×	171 1.1×	108 1.3×	25 0.9×	15	497

Countries citing papers authored by S. Steffens

Since Specialization

Citations

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

Fields of papers citing papers by S. Steffens

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of S. Steffens

This figure shows the co-authorship network connecting the top 25 collaborators of S. Steffens. A scholar is included among the top collaborators of S. Steffens 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 S. Steffens. S. Steffens is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Steffens, S., et al.. (2015). Stille Cross-Coupling Reaction with Cationic [(η⁵-Cp)(η⁶-C₆H_6–xI_x)Ru]⁺ Complexes as Key for Ethynyl-Bridged Homo- and Heteronuclear Sandwich Compounds. Organometallics. 34(9). 1692–1700. 13 indexed citations

Bringmann, Gerhard, Gerhard Lang, Torsten Bruhn, et al.. (2010). Sorbifuranones A–C, sorbicillinoid metabolites from Penicillium strains isolated from Mediterranean sponges. Tetrahedron. 66(52). 9894–9901. 23 indexed citations

Steffens, S., Marc H. Prosenc, Jürgen Heck, Inge Asselberghs, & Koen Clays. (2008). Trigonal‐Pyramidal Tetra‐Sandwich Complexes as 3D NLOphores. European Journal of Inorganic Chemistry. 2008(12). 1999–2006. 17 indexed citations

Fischer, Helmut, Michael J. Radler, Eike G. Hübner, et al.. (2007). Conjugated Polyunsaturated Oxacyclic Carbene Complexes: Synthesis, Structure, and Properties. Collection of Czechoslovak Chemical Communications. 72(4). 503–526. 1 indexed citations

Szesni, N., Jörg Maurer, Rainer F. Winter, et al.. (2006). Intermetallic Communication through Carbon Wires in Heterobinuclear Cationic Allenylidene Complexes of Chromium. Organometallics. 25(24). 5774–5787. 30 indexed citations

Bringmann, Gerhard, Gerhard Lang, Tobias A. M. Gulder, et al.. (2005). The first sorbicillinoid alkaloids, the antileukemic sorbicillactones A and B, from a sponge-derived Penicillium chrysogenum strain. Tetrahedron. 61(30). 7252–7265. 125 indexed citations

Ipaktschi, Junes, et al.. (2004). Addition of Ynamines to the Tungsten η¹-Vinylidene Complexes (η⁵-C₅H₅)(NO)(CO)WCC(H)R. Organometallics. 23(21). 4902–4909. 15 indexed citations

Bringmann, Gerhard, Gerhard Lang, S. Steffens, & Karsten Schaumann. (2004). Petrosifungins A and B, Novel Cyclodepsipeptides from a Sponge-Derived Strain of Penicillium brevicompactum. Journal of Natural Products. 67(3). 311–315. 40 indexed citations

Bringmann, Gerhard, Gerhard Lang, S. Steffens, E Günther, & Karsten Schaumann. (2003). Evariquinone, isoemericellin, and stromemycin from a sponge derived strain of the fungus Emericella variecolor. Phytochemistry. 63(4). 437–443. 60 indexed citations

10.

Bringmann, Gerhard, Gerhard Lang, Jörg Mühlbacher, et al.. (2003). Sorbicillactone A: a Structurally Unprecedented Bioactive Novel-Type Alkaloid from a Sponge-Derived Fungus. Progress in molecular and subcellular biology. 37. 231–253. 38 indexed citations

11.

Steffens, S. & Norbert Wilbert. (2002). Ciliates (Protozoa: Ciliophora) of Selected Ephemeral Flushson Tropical Inselbergs. International Review of Hydrobiology. 87(4). 401–401. 3 indexed citations

12.

Steffens, S., et al.. (2002). HPLC-UV, -MS, -NMR and -CD as Useful Tools in the Search for New Metabolites from Sponge Derived Fungi. Helmholtz-Zentrum für Polar-und Meeresforschung (Alfred-Wegener-Institut). 1 indexed citations

13.

Steffens, S., F. L. Deubner, B. Fleck, et al.. (1997). Wave Propagation in the Chromosphere and Transition Region. MPG.PuRe (Max Planck Society). 404. 679–684.

14.

Steffens, S., et al.. (1997). The influence of the solar atmospheric stratification on the structure of the acoustic wave field. Solar Physics. 172(1-2). 85–92. 4 indexed citations

15.

Steffens, S., F. L. Deubner, B. Fleck, & K. Wilhelm. (1997). Tracing CA K Grains Through the Chromosphere into the Transition Region. MPG.PuRe (Max Planck Society). 404. 685–689. 1 indexed citations

16.

Steffens, S., et al.. (1996). K-grains as a three-dimensional phenomenon. I. Statistics and spatial evolution.. 307(1). 288–292. 2 indexed citations

17.

Steffens, S., et al.. (1996). K-GRAINS AS A THREE-DIMENSIONAL PHENOMENON. II. PHASE ANALYSIS OF THE SPATIO-TEMPORAL PATTERN. 308(1). 192–198. 1 indexed citations

18.

Deubner, F. L., et al.. (1996). Dynamics of the solar atmosphere. VI. Resonant oscillations of an atmospheric cavity: observations.. 307(3). 936–946. 8 indexed citations

19.

Deubner, F. L., et al.. (1996). Evidence of K_2v_ grains being a non-magnetic phenomenon.. 316(1). 196–200. 2 indexed citations

20.

Steffens, S., et al.. (1995). Is there a chromospheric mode at 6 mHz. 302. 277. 2 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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