Helmut Lehmann

472 total citations
12 papers, 235 citations indexed

About

Helmut Lehmann is a scholar working on Organic Chemistry, Materials Chemistry and Electronic, Optical and Magnetic Materials. According to data from OpenAlex, Helmut Lehmann has authored 12 papers receiving a total of 235 indexed citations (citations by other indexed papers that have themselves been cited), including 5 papers in Organic Chemistry, 5 papers in Materials Chemistry and 3 papers in Electronic, Optical and Magnetic Materials. Recurrent topics in Helmut Lehmann's work include Porphyrin and Phthalocyanine Chemistry (4 papers), Synthesis and Reactivity of Heterocycles (3 papers) and Synthesis and Reactions of Organic Compounds (3 papers). Helmut Lehmann is often cited by papers focused on Porphyrin and Phthalocyanine Chemistry (4 papers), Synthesis and Reactivity of Heterocycles (3 papers) and Synthesis and Reactions of Organic Compounds (3 papers). Helmut Lehmann collaborates with scholars based in Germany, Austria and United Kingdom. Helmut Lehmann's co-authors include Michael Hanack, Andreas Hirsch, Hanna Koenig, M. Hanack, L. R. Subramanian, R. Gompper, Peter Haisch, Wolfgang Bauer, Lars Friedrich and Erwin Grochla and has published in prestigious journals such as Journal of Medicinal Chemistry, Synthesis and Angewandte Chemie International Edition in English.

In The Last Decade

Helmut Lehmann

11 papers receiving 225 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Helmut Lehmann Germany	7	133	111	65	58	56	12	235
Daniel Dupré France	10	182 1.4×	148 1.3×	17 0.3×	69 1.2×	110 2.0×	16	319
Martin Sicken Germany	6	317 2.4×	185 1.7×	16 0.2×	126 2.2×	66 1.2×	7	365
M. P. SAMMES Hong Kong	12	66 0.5×	340 3.1×	19 0.3×	57 1.0×	30 0.5×	62	408
Ernest S. Paight United States	8	66 0.5×	134 1.2×	62 1.0×	58 1.0×	64 1.1×	12	292
Shelley R. Graham United States	8	299 2.2×	118 1.1×	25 0.4×	179 3.1×	162 2.9×	8	376
Jabbar S. Hadi Iraq	8	89 0.7×	242 2.2×	67 1.0×	32 0.6×	65 1.2×	15	340
S. Henkel Germany	9	65 0.5×	272 2.5×	18 0.3×	18 0.3×	160 2.9×	15	349
Maria G. Gomes United States	7	56 0.4×	234 2.1×	50 0.8×	36 0.6×	37 0.7×	9	358
С. И. Филимонов Russia	9	45 0.3×	237 2.1×	20 0.3×	27 0.5×	55 1.0×	73	322
H. Hartung Germany	10	38 0.3×	275 2.5×	24 0.4×	34 0.6×	91 1.6×	26	346

Countries citing papers authored by Helmut Lehmann

Since Specialization

Citations

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

Fields of papers citing papers by Helmut Lehmann

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Helmut Lehmann

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

All Works

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12 of 12 papers shown

Hanack, M., Peter Haisch, Helmut Lehmann, & L. R. Subramanian. (1993). Synthesis of Soluble Octasubstituted Phthalocyaninatoplatinum and -palladium Complexes. Synthesis. 1993(4). 387–390. 26 indexed citations

Hanack, Michael, Andreas Hirsch, & Helmut Lehmann. (1990). Soluble, Oligomeric Bridged Phthalocyaninatoiron(II) Complexes. Angewandte Chemie International Edition in English. 29(12). 1467–1468. 48 indexed citations

Hanack, Michael, Andreas Hirsch, & Helmut Lehmann. (1990). Lösliche, oligomere verbrückte Phthalocyaninatoeisen(II)‐Komplexe. Angewandte Chemie. 102(12). 1499–1501. 26 indexed citations

Unger, Liliane, et al.. (1988). [Pharmacological characterization of the new highly potent beta-adrenergic receptor blocker soquinolol].. PubMed. 38(9). 1271–9. 1 indexed citations

Hanack, Michael, et al.. (1987). Syntheses of Liquid Crystalline Phthalocyanines. Synthesis. 1987(8). 703–705. 58 indexed citations

Lehmann, Helmut, et al.. (1984). ChemInform Abstract: 6‐ARYL‐4,5‐DIHYDRO‐3(2H)‐PYRIDAZINONES. A NEW CLASS OF COMPOUNDS WITH PLATELET AGGREGATION INHIBITING AND HYPOTENSIVE ACTIVITIES. Chemischer Informationsdienst. 15(8). 2 indexed citations

Lehmann, Helmut, et al.. (1983). 6-Aryl-4,5-dihydro-3(2H)-pyridazinones. A new class of compounds with platelet aggregation inhibiting and hypotensive activities. Journal of Medicinal Chemistry. 26(6). 800–807. 57 indexed citations

Lehmann, Helmut, et al.. (1981). ChemInform Abstract: NEW β‐SYMPATHOLYTIC AGENTS: SYNTHESIS AND PHARMACOLOGICAL ACTIVITY OF ISOMERIC BENZOTHIAZOLE AND BENZOXAZOLE DERIVATIVES. Chemischer Informationsdienst. 12(10). 2 indexed citations

Grochla, Erwin, et al.. (1977). Zeitvarianz betrieblicher Systeme. Birkhäuser Basel eBooks.

10.

Lehmann, Helmut, et al.. (1974). Antistatische Ausrüstung von Lebensmittelverpackungen. Fette Seifen Anstrichmittel. 76(9). 390–393. 1 indexed citations

11.

Gompper, R. & Helmut Lehmann. (1968). Chinonmethidimine. Angewandte Chemie. 80(1). 38–40. 7 indexed citations

12.

Gompper, R. & Helmut Lehmann. (1968). Quinone Methide Imines. Angewandte Chemie International Edition in English. 7(1). 74–75. 7 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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