John E. Hallgren

644 total citations
19 papers, 442 citations indexed

About

John E. Hallgren is a scholar working on Organic Chemistry, Inorganic Chemistry and Oncology. According to data from OpenAlex, John E. Hallgren has authored 19 papers receiving a total of 442 indexed citations (citations by other indexed papers that have themselves been cited), including 15 papers in Organic Chemistry, 9 papers in Inorganic Chemistry and 6 papers in Oncology. Recurrent topics in John E. Hallgren's work include Organometallic Complex Synthesis and Catalysis (9 papers), Asymmetric Hydrogenation and Catalysis (5 papers) and Metal complexes synthesis and properties (5 papers). John E. Hallgren is often cited by papers focused on Organometallic Complex Synthesis and Catalysis (9 papers), Asymmetric Hydrogenation and Catalysis (5 papers) and Metal complexes synthesis and properties (5 papers). John E. Hallgren collaborates with scholars based in United States. John E. Hallgren's co-authors include Dietmar Seyferth, Robert E. Colborn and Joseph S. Merola and has published in prestigious journals such as Journal of the American Chemical Society, The Journal of Organic Chemistry and Tetrahedron Letters.

In The Last Decade

John E. Hallgren

19 papers receiving 410 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
John E. Hallgren United States	11	339	226	126	58	48	19	442
U. Meyer Germany	11	577 1.7×	480 2.1×	95 0.8×	50 0.9×	75 1.6×	12	667
S. C. Kao Taiwan	11	261 0.8×	229 1.0×	90 0.7×	53 0.9×	29 0.6×	20	425
Marianne Marsi United States	11	294 0.9×	183 0.8×	37 0.3×	48 0.8×	36 0.8×	13	382
Wilhelmus P. Mul Netherlands	16	509 1.5×	332 1.5×	129 1.0×	58 1.0×	98 2.0×	34	596
Reg Davis United Kingdom	14	405 1.2×	232 1.0×	43 0.3×	41 0.7×	44 0.9×	39	519
Ralf Zolk Germany	15	559 1.6×	365 1.6×	94 0.7×	23 0.4×	21 0.4×	24	604
Larry G. Bell Germany	8	432 1.3×	292 1.3×	36 0.3×	57 1.0×	23 0.5×	11	514
J. A. M. van Broekhoven Netherlands	9	513 1.5×	243 1.1×	199 1.6×	66 1.1×	33 0.7×	13	638
Stephen M. Tetrick United States	13	263 0.8×	181 0.8×	48 0.4×	83 1.4×	92 1.9×	28	385
A. A. H. VAN DER ZEIJDEN Germany	20	773 2.3×	465 2.1×	108 0.9×	65 1.1×	78 1.6×	36	852

Countries citing papers authored by John E. Hallgren

Since Specialization

Citations

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

Fields of papers citing papers by John E. Hallgren

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by John E. Hallgren. 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 John E. Hallgren. The network helps show where John E. Hallgren may publish in the future.

Co-authorship network of co-authors of John E. Hallgren

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

All Works

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19 of 19 papers shown

1.

Hallgren, John E., et al.. (1990). A new one‐component anhydride‐cured epoxy with an aliphatic disiloxane dianhydride and metal‐coordinated lewis bases. Journal of Polymer Science Part A Polymer Chemistry. 28(9). 2417–2426. 17 indexed citations

2.

Hallgren, John E., et al.. (1987). Effects of proximate polar groups on the rates of hydrosilylation.. The Journal of Organic Chemistry. 52(10). 1903–1906. 7 indexed citations

3.

Hallgren, John E., et al.. (1981). The palladium-catalyzed synthesis of diphenyl carbonate from phenol, carbon monoxide, and oxygen. Journal of Organometallic Chemistry. 204(1). 135–138. 46 indexed citations

4.

Hallgren, John E., et al.. (1981). The palladium-catalyzed synthesis of diphenyl carbonate from phenol, carbon monoxide, and oxygen. Journal of Organometallic Chemistry. 212(1). 135–139. 30 indexed citations

5.

Hallgren, John E., et al.. (1980). The synthesis and reactions of polysulfites derived from 2,2‐bis(4‐hydroxyphenyl)propane. Journal of Polymer Science Polymer Chemistry Edition. 18(5). 1615–1617. 1 indexed citations

6.

Hallgren, John E., et al.. (1980). Synthesis of aryl esters from olefin and phenols via palladium carbonyl chloride. Journal of Organometallic Chemistry. 192(1). C12–C16. 6 indexed citations

7.

Hallgren, John E., et al.. (1980). A tripod hexaketone as a ligand for manganese. Tetrahedron Letters. 21(41). 3951–3954. 8 indexed citations

8.

Hallgren, John E., et al.. (1979). The Reactions of Carbon Monoxide and Phenols Promoted by Palladium Complexes. Journal of Organometallic Chemistry. 175(1). 135–142. 40 indexed citations

9.

Seyferth, Dietmar, et al.. (1979). Organocobalt cluster complexes. 28. Highly stabilized (nonacarbonyltricobalt)carbon-substituted carbonium ions. Journal of the American Chemical Society. 101(17). 4867–4878. 14 indexed citations

10.

Hallgren, John E., et al.. (1979). Synthesis and polymerization of the cyclic tricarbonate of 2,2‐bis(4‐hydroxyphenyl)‐1,1‐dichloroethylene. Journal of Polymer Science Polymer Chemistry Edition. 17(11). 3781–3783. 3 indexed citations

11.

Seyferth, Dietmar, et al.. (1974). Organocobalt cluster complexes. Journal of Organometallic Chemistry. 65(1). 99–118. 28 indexed citations

12.

Seyferth, Dietmar, et al.. (1974). Organocobalt cluster complexes. XV. New route to organofunctional organocobalt cluster complexes based on the tricobaltcarbon decacarbonyl cation. Journal of the American Chemical Society. 96(6). 1730–1737. 36 indexed citations

13.

Seyferth, Dietmar & John E. Hallgren. (1973). Organocobalt cluster complexes X. Evidence for the methylidynetricobalt nonacarbonyl radical. Journal of Organometallic Chemistry. 49(1). C41–C42. 10 indexed citations

14.

Seyferth, Dietmar, et al.. (1973). The preparation of functional alkylidynetricobalt nonacarbonyl complexes from dicobalt octacarbonyl. Journal of Organometallic Chemistry. 50(1). 265–275. 101 indexed citations

15.

Seyferth, Dietmar, et al.. (1973). Organocobalt cluster complexes. XI. Carbonium ion derivatives. Journal of the American Chemical Society. 95(1). 266–267. 31 indexed citations

16.

Seyferth, Dietmar, et al.. (1972). Organocobalt cluster complexes IX. A new general route to alkylidynetricobalt nonacarbonyl complexes. Journal of Organometallic Chemistry. 44(2). C55–C58. 19 indexed citations

17.

Hallgren, John E., et al.. (1972). Carbatricobalt decacarbonyl cation. Novel acylating agent. Journal of the American Chemical Society. 94(7). 2547–2549. 31 indexed citations

18.

Seyferth, Dietmar, et al.. (1971). The methylenation of methylidynetricobalt nonacarbonyl with monohalomethylmercurials. Journal of Organometallic Chemistry. 28(3). C34–C36. 6 indexed citations

19.

Seyferth, Dietmar, et al.. (1970). The C-arylation and alkylation of methylidynetricobalt nonacarbonyls by organomercury compounds. Journal of Organometallic Chemistry. 23(2). C55–C57. 8 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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