Rolf Appel

10.4k total citations · 3 hit papers
354 papers, 8.3k citations indexed

About

Rolf Appel is a scholar working on Organic Chemistry, Inorganic Chemistry and Molecular Biology. According to data from OpenAlex, Rolf Appel has authored 354 papers receiving a total of 8.3k indexed citations (citations by other indexed papers that have themselves been cited), including 312 papers in Organic Chemistry, 216 papers in Inorganic Chemistry and 45 papers in Molecular Biology. Recurrent topics in Rolf Appel's work include Synthesis and characterization of novel inorganic/organometallic compounds (186 papers), Organophosphorus compounds synthesis (160 papers) and Organometallic Complex Synthesis and Catalysis (82 papers). Rolf Appel is often cited by papers focused on Synthesis and characterization of novel inorganic/organometallic compounds (186 papers), Organophosphorus compounds synthesis (160 papers) and Organometallic Complex Synthesis and Catalysis (82 papers). Rolf Appel collaborates with scholars based in Germany, United States and Slovakia. Rolf Appel's co-authors include Falk Knoch, Ingo Ruppert, Fritz Knoll, Axel Westerhaus, Roland Kleinstück, Klaus‐Dieter Ziehn, Otto J. Scherer, Manfred Regitz, Volker Barth and Carl Casser and has published in prestigious journals such as Angewandte Chemie International Edition, The Journal of Organic Chemistry and Tetrahedron Letters.

In The Last Decade

Rolf Appel

344 papers receiving 7.6k citations

Hit Papers

align trajectories

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.

Tertiary Phosphane/Tetrachloromethane, a Versatile Reagent for Chlorination, Dehydration, and PN Linkage

1975 792 citations Rolf Appel Angewandte Chemie International Edition in English profile →
Multiple bonds and low coordination in phosphorus chemistry

1990 397 citations Manfred Regitz, Otto J. Scherer et al. profile →
Tertiäres Phosphan/Tetrachlormethan, ein vielseitiges Reagens zur Chlorierung, Dehydratisierung und PN-Verknüpfung

1975 280 citations Rolf Appel Angewandte Chemie profile →

Peers

Countries citing papers authored by Rolf Appel

Since Specialization

Citations

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

Fields of papers citing papers by Rolf Appel

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Rolf Appel

This figure shows the co-authorship network connecting the top 25 collaborators of Rolf Appel. A scholar is included among the top collaborators of Rolf Appel 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 Rolf Appel. Rolf Appel 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

#	Work	Indexed citations
1	Multiple bonds and low coordination in phosphorus chemistry breakdown → 1990 ·Manfred Regitz, Otto J. Scherer, Rolf Appel	397
2	Das erste an zwei Metallzentren koordinierte Diphosphaallylsystem 1988 ·Angewandte Chemie ·Rolf Appel, (unknown), Martin Nieger	6
3	Das erste Triphosphabicyclobutan ‐ Hinweise auf ein 1,2,3‐Triphosphabutadien 1988 ·Angewandte Chemie ·Rolf Appel, (unknown), Martin Nieger	20
4	Niederkoordinierte Phosphorverbindungen, 45. Gemischt substituierte Bismethylenphosphorane durch Einwirkung von Carbenoiden auf Phosphaalkene 1986 ·Chemische Berichte ·Rolf Appel, (unknown), Falk Knoch, Gerhard Lenz	30
5	Niederkoordinierte Phosphor‐Verbindungen, 48. Synthese von 1‐Phosphaallenen 1986 ·Chemische Berichte ·Rolf Appel, (unknown), Falk Knoch	28
6	The First Tris(methylene)phosphate Ion 1985 ·Angewandte Chemie International Edition in English ·Rolf Appel, (unknown), Falk Knoch	18
7	Niederkoordinierte Phosphor‐Verbindungen, 17. Diphosphabutadiene 1983 ·Chemische Berichte ·Rolf Appel, Volker Barth, Falk Knoch	97
8	Das erste Organodithioxophosphoran 1983 ·Angewandte Chemie ·Rolf Appel, Falk Knoch, (unknown)	59
9	(tBuP)₄CO, das erste cyclische Phosphaharnstoff‐Derivat – Darstellung und Reaktionsabläufe im System tert‐Butylbis(trimethylsilyl)phosphan/Phosgen 1983 ·Chemische Berichte ·Rolf Appel, (unknown)	21
10	Über ein neues Darstellungsverfahren und eine ungewöhnliche Spaltung der Methylenbis(diorganylphosphane) durch Alkalimetalle 1979 ·Chemische Berichte ·Rolf Appel, (unknown), (unknown)	74
11	Kondensationsreaktionen von Schwefeltetrafluorid mit Iminophosphoranen 1976 ·Chemische Berichte ·Rolf Appel, (unknown), (unknown)	3
12	Tertiary Phosphane/Tetrachloromethane, a Versatile Reagent for Chlorination, Dehydration, and PN Linkage breakdown → 1975 ·Angewandte Chemie International Edition in English ·Rolf Appel	792
13	Tertiäres Phosphan/Tetrachlormethan, ein vielseitiges Reagens zur Chlorierung, Dehydratisierung und PN-Verknüpfung breakdown → 1975 ·Angewandte Chemie ·Rolf Appel	280
14	Imin‐Sauerstoff‐Austauschreaktionen zwischen Bis(iminophosphoranen) und Diketonen 1975 ·Chemische Berichte ·Rolf Appel, (unknown)	15
15	Triphenylarsin-imin 1960 ·Angewandte Chemie ·Rolf Appel, Dieter Wagner	11
16	Triphenyl‐phosphinimin 1959 ·Angewandte Chemie ·Rolf Appel, (unknown)	22
17	Diäthyl‐sulfimin¹⁾ 1959 ·Angewandte Chemie ·Rolf Appel, Werner Büchner	7
18	Isocyanate der Schwefelsäure und der Dischwefelsäure 1958 ·Angewandte Chemie ·Rolf Appel, (unknown)	5
19	Ester der Amidosulfonsäure 1958 ·Angewandte Chemie ·Rolf Appel, (unknown)	5
20	Darstellung des Amidosulfonsäurefluorids 1958 ·Angewandte Chemie ·Rolf Appel, (unknown)	14

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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