H.‐J. Hansen

404 total citations
13 papers, 307 citations indexed

About

H.‐J. Hansen is a scholar working on Organic Chemistry, Molecular Biology and Pharmaceutical Science. According to data from OpenAlex, H.‐J. Hansen has authored 13 papers receiving a total of 307 indexed citations (citations by other indexed papers that have themselves been cited), including 9 papers in Organic Chemistry, 3 papers in Molecular Biology and 3 papers in Pharmaceutical Science. Recurrent topics in H.‐J. Hansen's work include Chemical Synthesis and Analysis (2 papers), Radical Photochemical Reactions (2 papers) and Chemical Synthesis and Characterization (2 papers). H.‐J. Hansen is often cited by papers focused on Chemical Synthesis and Analysis (2 papers), Radical Photochemical Reactions (2 papers) and Chemical Synthesis and Characterization (2 papers). H.‐J. Hansen collaborates with scholars based in Switzerland. H.‐J. Hansen's co-authors include H. Schmid, Heinz Heimgartner, T. WINKLER, Qingjiang Chen, A. Aarkrog, H. Dahlgaard, Janos Zsindely, Paul Gilgen, Wolfgang von Philipsborn and M. Märky and has published in prestigious journals such as Analytica Chimica Acta, Helvetica Chimica Acta and CHIMIA International Journal for Chemistry.

In The Last Decade

H.‐J. Hansen

12 papers receiving 290 citations

Peers

H.‐J. Hansen

OC

MB

PS

IC

SPECT

Marcin Sawicki France

Ryôzô Gotô Japan

G. J. WRIGHT New Zealand

Edmund F. Perozzi China

Donald Milton Smith Switzerland

Mark Roberson Denmark

Robert A. Smiley United States

S. D. DARLING United States

James McKay United States

Robert Boschan United States

Marcin Sawicki France

H.‐J. Hansen

299 ×1.2

OC

62 ×1.1

MB

39 ×0.7

PS

195 ×3.8

IC

22 ×0.8

SPECT

Citations per year, relative to H.‐J. Hansen H.‐J. Hansen (= 1×) peers Marcin Sawicki

Countries citing papers authored by H.‐J. Hansen

Since Specialization

Citations

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

Fields of papers citing papers by H.‐J. Hansen

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by H.‐J. Hansen. 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 H.‐J. Hansen. The network helps show where H.‐J. Hansen may publish in the future.

Co-authorship network of co-authors of H.‐J. Hansen

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

All Works

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13 of 13 papers shown

1.

Chen, Qingjiang, H. Dahlgaard, H.‐J. Hansen, & A. Aarkrog. (1990). Determination of 99 Tc in environmental samples by anion exchange and liquid-liquid extraction at controlled valency. Analytica Chimica Acta. 228. 163–167. 41 indexed citations

2.

Schmid, H., et al.. (1980). ChemInform Abstract: PHOTOREACTIONS OF 1‐ALKYLBENZOTRIAZOLES. Chemischer Informationsdienst. 11(8). 1 indexed citations

3.

Schmid, H., et al.. (1978). Untersuchungen über Allylgruppenwanderungen in aliphatischen Carbenium‐Ionen. Helvetica Chimica Acta. 61(5). 1856–1902. 5 indexed citations

4.

Gilgen, Paul, et al.. (1977). ChemInform Abstract: A REVIEW ON THE PHOTOCHEMISTRY OF 2H‐AZIRINES. Chemischer Informationsdienst. 8(23). 25 indexed citations

5.

Heimgartner, Heinz, Janos Zsindely, H.‐J. Hansen, & H. Schmid. (1972). Die Dienol‐Benzol‐Umlagerung von Propargylcyclohexadienolen: aromatische [1,2]‐, [3,3]‐ und [3,4]‐sigmatropische Umlagerungen. Helvetica Chimica Acta. 55(4). 1113–1141. 28 indexed citations

6.

Märky, M., et al.. (1972). Photochemische Cycloadditionen von 3‐Phenyl‐2H‐azirinen mit kumulierten Doppelbindungen. Vorläufige Mitteilung. Helvetica Chimica Acta. 55(3). 916–918. 27 indexed citations

7.

Heimgartner, Heinz, H.‐J. Hansen, & H. Schmid. (1972). Thermisches Verhalten von 1,2‐Dipropenylbenzolen. Helvetica Chimica Acta. 55(5). 1385–1403. 18 indexed citations

8.

Hansen, H.‐J., et al.. (1971). Thermisches Verhalten von Cyclopropa[c]chromenen. Helvetica Chimica Acta. 54(1). 306–327. 19 indexed citations

9.

Heimgartner, Heinz, et al.. (1971). Photochemisches Verhalten von 1‐ und 2‐alkylierten 1,2‐Dihydronaphtalinen. Helvetica Chimica Acta. 54(7). 2313–2354. 35 indexed citations

10.

Hansen, H.‐J. & H. M. Schmid. (1970). Aromatische sigmatropische H-Verschiebungen und Claisen-Umlagerungen. CHIMIA International Journal for Chemistry. 24(3). 89–89.

11.

Heimgartner, Heinz, H.‐J. Hansen, & H. Schmid. (1970). Thermisches Verhalten von o‐Dipropenylbenzol, Beispiel einer aromatischen [1,7]‐sigmatropischen H‐Verschiebung. Vorläufige Mitteilung. Helvetica Chimica Acta. 53(1). 173–176. 18 indexed citations

12.

WINKLER, T., et al.. (1968). Stereochemie des Übergangszustandes aliphatischer CLAISEN‐Umlagerungen. Vorläufige Mitteilung. Helvetica Chimica Acta. 51(6). 1457–1461. 71 indexed citations

13.

Borgulya, J., H.‐J. Hansen, R. Barner, & H. Schmid. (1963). Neue Umlagerungen von Aryl‐allyl‐äthern und Allylphenolen. (Vorläufige Mitteilung). Helvetica Chimica Acta. 46(6). 2444–2445. 19 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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