K. Hafner

519 total citations
16 papers, 428 citations indexed

About

K. Hafner is a scholar working on Organic Chemistry, Geophysics and Physical and Theoretical Chemistry. According to data from OpenAlex, K. Hafner has authored 16 papers receiving a total of 428 indexed citations (citations by other indexed papers that have themselves been cited), including 10 papers in Organic Chemistry, 4 papers in Geophysics and 4 papers in Physical and Theoretical Chemistry. Recurrent topics in K. Hafner's work include Synthesis and Properties of Aromatic Compounds (5 papers), Seismic Waves and Analysis (3 papers) and Organic Chemistry Cycloaddition Reactions (3 papers). K. Hafner is often cited by papers focused on Synthesis and Properties of Aromatic Compounds (5 papers), Seismic Waves and Analysis (3 papers) and Organic Chemistry Cycloaddition Reactions (3 papers). K. Hafner collaborates with scholars based in Germany, United States and Switzerland. K. Hafner's co-authors include Markus Neuenschwander, Elena V. Sturm, Philipp C. Schmid, Thomas M. Klapötke, Robert W. Clayton, Jörg Stierstorfer, Robert Busby, T. H. Heaton, Egill Hauksson and David J. Wald and has published in prestigious journals such as Pure and Applied Chemistry, European Journal of Inorganic Chemistry and Journal of Molecular Structure.

In The Last Decade

K. Hafner

15 papers receiving 408 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
K. Hafner Germany	10	296	78	71	64	50	16	428
В. И. Сорокин Russia	12	209 0.7×	62 0.8×	16 0.2×	16 0.3×	14 0.3×	45	329
Michael Wrinn United States	7	161 0.5×	107 1.4×	73 1.0×	8 0.1×	40 0.8×	21	460
P.M.V.B. Barone Brazil	10	106 0.4×	120 1.5×	30 0.4×	3 0.0×	30 0.6×	19	340
E. V. Sobolev Russia	8	123 0.4×	91 1.2×	31 0.4×	48 0.8×	10 0.2×	43	298
David Schulze‐Sünninghausen Germany	7	112 0.4×	97 1.2×	9 0.1×	28 0.4×	12 0.2×	8	308
I. Jalsovszky Hungary	12	280 0.9×	183 2.3×	39 0.5×	62 1.0×	10 0.2×	37	390
Andr� Julg France	10	241 0.8×	56 0.7×	103 1.5×	5 0.1×	30 0.6×	19	374
Frank J. McLafferty United States	12	245 0.8×	63 0.8×	105 1.5×	3 0.0×	38 0.8×	22	368
P. VON R. SCHLEYER Germany	9	257 0.9×	66 0.8×	74 1.0×	8 0.1×	16 0.3×	18	373
D. N. Nanda India	6	87 0.3×	102 1.3×	96 1.4×	4 0.1×	39 0.8×	9	325

Countries citing papers authored by K. Hafner

Since Specialization

Citations

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

Fields of papers citing papers by K. Hafner

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of K. Hafner

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

All Works

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16 of 16 papers shown

Hafner, K., Thomas M. Klapötke, Philipp C. Schmid, & Jörg Stierstorfer. (2015). Synthesis and Characterization of Asymmetric 1,2‐Dihydroxy‐5,5′‐bitetrazole and Selected Nitrogen‐Rich Derivatives. European Journal of Inorganic Chemistry. 2015(17). 2794–2803. 23 indexed citations

Astiz, L., V. G. Martynov, Malcolm C. A. White, et al.. (2014). The Array Network Facility Seismic Bulletin: Products and an Unbiased View of United States Seismicity. Seismological Research Letters. 85(3). 576–593. 25 indexed citations

Hafner, K. & Robert W. Clayton. (2001). The Southern California Earthquake Data Center (SCEDC). Seismological Research Letters. 72(6). 705–711. 6 indexed citations

Hauksson, Egill, Pamela L. C. Small, K. Hafner, et al.. (2001). Southern California Seismic Network: Caltech/USGS Element of TriNet 1997-2001. Seismological Research Letters. 72(6). 690–704. 38 indexed citations

Hafner, K., et al.. (1999). s‐インダセン,混合芳香族性と反芳香族性をもつ擬非局在化分子. Journal of Molecular Structure. 23–28. 1 indexed citations

Wald, Lisa A., K. Hafner, & Stephen P. Bryant. (1995). The 1994 Southern California Network Bulletin. Seismological Research Letters. 66(6). 72–83. 2 indexed citations

Hafner, K.. (1982). New aspects of the chemistry of nonbenzenoid polycyclic conjugated π-electron systems. Pure and Applied Chemistry. 54(5). 939–956. 61 indexed citations

Lindner, H.J., et al.. (1980). Structure of a 1:1 adduct of azulene and 1-(diethylamino)propyne. Acta Crystallographica Section B. 36(3). 754–755. 1 indexed citations

Rejholec, V., et al.. (1973). Conjugated radicals. XVII. Electronic spectra of radical ions derived from pentaleno[6,6a,1,2-def]heptalene and 2-phenylcyclopent[cd]azulene and semiempirical open shell PPP-like calculations. Collection of Czechoslovak Chemical Communications. 38(5). 1463–1465. 1 indexed citations

10.

Zahradník, R., V. Rejholec, Pavel Hobza, Petr Čárský, & K. Hafner. (1972). Conjugated radicals. XIV. Electronic spectra and semiempirical calculations on radical anions of acenaphthylene, fluoranthene and aceheptylene. Collection of Czechoslovak Chemical Communications. 37(6). 1983–1989. 1 indexed citations

11.

Hafner, K.. (1971). Structure and reactivity of polycyclic cross-conjugated π-electron systems. Pure and Applied Chemistry. 28(2-3). 153–180. 59 indexed citations

12.

Hafner, K. & Markus Neuenschwander. (1968). Ethynylogous Amides and Urethanes. Angewandte Chemie International Edition in English. 7(6). 459–460. 36 indexed citations

13.

Davison, Alan, Michael Dewar, K. Hafner, et al.. (1968). Fortschritte der chemischen Forschung. 20 indexed citations

14.

Hafner, K., et al.. (1965). Pentaleno[2,1,6‐def]heptalene – a Non‐benzenoid Isomer of Pyrene. Angewandte Chemie International Edition in English. 4(1). 69–70. 22 indexed citations

15.

Hafner, K.. (1964). Structure and Aromatic Character of Non‐benzenoid Cyclically Conjugated Systems. Angewandte Chemie International Edition in English. 3(3). 165–173. 117 indexed citations

16.

Sturm, Elena V. & K. Hafner. (1964). A Simple Synthesis of Fulvene and Its 6‐Alkyl Derivatives. Angewandte Chemie International Edition in English. 3(11). 749–749. 15 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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