Hans‐Ullrich Siehl

1.6k total citations
83 papers, 1.1k citations indexed

About

Hans‐Ullrich Siehl is a scholar working on Organic Chemistry, Spectroscopy and Molecular Biology. According to data from OpenAlex, Hans‐Ullrich Siehl has authored 83 papers receiving a total of 1.1k indexed citations (citations by other indexed papers that have themselves been cited), including 40 papers in Organic Chemistry, 30 papers in Spectroscopy and 20 papers in Molecular Biology. Recurrent topics in Hans‐Ullrich Siehl's work include Analytical Chemistry and Chromatography (13 papers), Molecular spectroscopy and chirality (13 papers) and Plant biochemistry and biosynthesis (11 papers). Hans‐Ullrich Siehl is often cited by papers focused on Analytical Chemistry and Chromatography (13 papers), Molecular spectroscopy and chirality (13 papers) and Plant biochemistry and biosynthesis (11 papers). Hans‐Ullrich Siehl collaborates with scholars based in Germany, Japan and Israel. Hans‐Ullrich Siehl's co-authors include Thomas Müller, Michael Hanack, Peter Buzek, Yitzhak Apeloig, Wolfgang Frey, Masato Tanaka, Rita Meyer, Valerije Vrček, Paul von Ragué Schleyer and A. Stephen K. Hashmi and has published in prestigious journals such as Journal of the American Chemical Society, Angewandte Chemie International Edition and Chemical Physics Letters.

In The Last Decade

Hans‐Ullrich Siehl

75 papers receiving 1.0k citations

Peers

Countries citing papers authored by Hans‐Ullrich Siehl

Since Specialization

Citations

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

Fields of papers citing papers by Hans‐Ullrich Siehl

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Hans‐Ullrich Siehl. 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 Hans‐Ullrich Siehl. The network helps show where Hans‐Ullrich Siehl may publish in the future.

Co-authorship network of co-authors of Hans‐Ullrich Siehl

This figure shows the co-authorship network connecting the top 25 collaborators of Hans‐Ullrich Siehl. A scholar is included among the top collaborators of Hans‐Ullrich Siehl 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 Hans‐Ullrich Siehl. Hans‐Ullrich Siehl 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	Linderazulen aus einer invasiven Pflanze 2019 ·Chemie in unserer Zeit ·(unknown), (unknown), Klaus‐Peter Zeller, Hans‐Ullrich Siehl, Stefan Berger, Dieter Sicker	2
2	About the Existence of Organic Oxonium Ions as Mechanistic Intermediates in Water Solution 2016 ·The Journal of Physical Chemistry A ·Santiago de la Moya Cerero, Hans‐Ullrich Siehl, Antonio García	3
3	Vom Granatapfelbaum zum Cyclooctatetraen 2015 ·Chemie in unserer Zeit ·Georg Heß, (unknown), Dorothee Wistuba, Hans‐Ullrich Siehl, Stefan Berger, Dieter Sicker, Klaus‐Peter Zeller	2
4	Colchicin 2014 ·Chemie in unserer Zeit ·(unknown), Hans‐Ullrich Siehl, Klaus‐Peter Zeller, (unknown), Stefan Berger, Dieter Sicker	1
5	Raffinose + Raffinase = Raffinade: Raffiniert! 2014 ·Chemie in unserer Zeit ·(unknown), (unknown), (unknown), Stefan Berger, Dieter Sicker, Hans‐Ullrich Siehl, Klaus‐Peter Zeller	1
6	Kokain 2013 ·Chemie in unserer Zeit ·(unknown), (unknown), Hans‐Ullrich Siehl, Klaus‐Peter Zeller, Stefan Berger	3
7	A Novel Semisynthetic Inhibitor of the FRB Domain of Mammalian Target of Rapamycin Blocks Proliferation and Triggers Apoptosis in Chemoresistant Prostate Cancer Cells 2012 ·Molecular Pharmacology ·Samy A.F. Morad, (unknown), Berthold Büchele, Hans‐Ullrich Siehl, Menna El Gaafary, Oleg Lunov, Tatiana Syrovets, Thomas Simmet	34
8	Conformational Flexibility and Cation–Anion Interactions in 1-Butyl-2,3-dimethylimidazolium Salts 2012 ·Crystal Growth & Design ·Gerhard Laus, G. Bentivoglio, Volker Kahlenberg, Klaus Wurst, Gerhard Nauer, Herwig Schottenberger, Masato Tanaka, Hans‐Ullrich Siehl	15
9	Orthoamides and Iminium Salts LXXII: N,N,N′,N′,N′′,N′′,N′′′,N′′′‐Octamethyl‐(but‐2‐yne)‐bis(amidinium) Tetrafluoroborate: The First Bis‐amidinium Salt of Acetylenedicarboxyclic Acid. A New Superelectrophile? 2012 ·Chemistry - A European Journal ·Konstantin Drandarov, Ioannis Tiritiris, (unknown), Hans‐Ullrich Siehl, Willi Kantlehner	10
10	Influence of N‐Alkyl Substituents and Counterions on the Structural and Mesomorphic Properties of Guanidinium Salts: Experiment and Quantum Chemical Calculations 2010 ·ChemPhysChem ·(unknown), Sven Sauer, E Kessler, Hans‐Ullrich Siehl, Birgit Claasen, Peter Fischer, Wolfgang Frey, Sabine Laschat	32
11	Gold Catalysis: Deuterated Substrates as the Key for an Experimental Insight into the Mechanism and Selectivity of the Phenol Synthesis 2008 ·Chemistry - A European Journal ·A. Stephen K. Hashmi, Matthias Rudolph, Hans‐Ullrich Siehl, Masato Tanaka, Jan W. Bats, Wolfgang Frey	128
12	An application of the consistent charge equilibration (CQEq) method to guanidinium ionic liquid systems 2008 ·Chemical Physics Letters ·Masato Tanaka, Hans‐Ullrich Siehl	11
13	Gaussian 03 Workshop 2003 ·Nachrichten aus der Chemie ·Hans‐Ullrich Siehl	0
14	NMR Spectroscopic and quantum chemical characterization of the (E)‐ and (Z)‐ isomers of the penta‐1,3‐dienyl‐2‐cation 2003 ·Journal of Physical Organic Chemistry ·Hans‐Ullrich Siehl, Thomas Müller, Jürgen Gauß	25
15	Quantum Chemical Study of Degenerate Hydride Shifts in Acyclic Tertiary Carbocations 2002 ·The Journal of Physical Chemistry A ·Ivana Vinković Vrček, Valerije Vrček, Hans‐Ullrich Siehl	39
16	GIAO-DFT calculated and experimentally derived complexation-induced chemical shifts of calix[4]arene–solvent inclusion complexesElectronic supplementary information (ESI) available: calculated and observed NMR data and geometrical details for complexes 1–3, 1–4 and 1–5. See http://www.rsc.org/suppdata/p2/b1/b110078p/ 2002 ·Journal of the Chemical Society Perkin Transactions 2 ·(unknown), J. Schatz, Hans‐Ullrich Siehl	14
17	Ungewöhnlich stabile Vinylkationen 2000 ·Angewandte Chemie ·Thomas Müller, Rita Meyer, (unknown), Hans‐Ullrich Siehl	26
18	Cyclopropylcyclopropylidenemethyl Cation: A Unique Stabilized Vinyl Cation Characterized by NMR Spectroscopy and Quantum Chemical ab Initio Calculations 1994 ·Journal of the American Chemical Society ·Hans‐Ullrich Siehl, Thomas Mueller, Juergen Gauss, Peter Buzek, Paul v. R. Schleyer	35
19	Die Suche nach einem isolierbaren Silyl‐Kation muß weitergehen 1993 ·Angewandte Chemie ·Paul von Ragué Schleyer, Peter Buzek, Thomas Müller, Yitzhak Apeloig, Hans‐Ullrich Siehl	31
20	Conformational dependence of the β-deuterium equilibrium isotope effect in acyclic carbocations. Suppression of hyperconjugation by restricted rotation in the 2,4,4,6-tetramethylheptyl cation 1985 ·Journal of the Chemical Society Chemical Communications ·Hans‐Ullrich Siehl, Harald Walter	5

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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