H. C. Freeman

3.3k total citations · 1 hit paper
63 papers, 2.7k citations indexed

About

H. C. Freeman is a scholar working on Materials Chemistry, Molecular Biology and Oncology. According to data from OpenAlex, H. C. Freeman has authored 63 papers receiving a total of 2.7k indexed citations (citations by other indexed papers that have themselves been cited), including 20 papers in Materials Chemistry, 19 papers in Molecular Biology and 17 papers in Oncology. Recurrent topics in H. C. Freeman's work include Metal complexes synthesis and properties (15 papers), Enzyme Structure and Function (11 papers) and Photosynthetic Processes and Mechanisms (11 papers). H. C. Freeman is often cited by papers focused on Metal complexes synthesis and properties (15 papers), Enzyme Structure and Function (11 papers) and Photosynthetic Processes and Mechanisms (11 papers). H. C. Freeman collaborates with scholars based in Australia, Canada and United States. H. C. Freeman's co-authors include J.M. Guss, Valerie A. Norris, John A. M. Ramshaw, Mikio MURATA, M. P. Venkatappa, Peter M. Colman, P.J. Ellis, Thomas Garrett, Samuel J. Rogers and J. T. Szymański and has published in prestigious journals such as Nature, Proceedings of the National Academy of Sciences and Journal of the American Chemical Society.

In The Last Decade

H. C. Freeman

63 papers receiving 2.5k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

X-ray crystal structure analysis of plastocyanin at 2.7 Å resolution

1978 591 citations H. C. Freeman, J.M. Guss et al. profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
H. C. Freeman Australia	28	1.2k	774	642	570	433	63	2.7k
Hans C. Freeman Australia	28	2.0k 1.6×	792 1.0×	821 1.3×	603 1.1×	335 0.8×	64	3.2k
Thomas C. Strekas United States	21	1.1k 0.9×	877 1.1×	274 0.4×	625 1.1×	573 1.3×	45	2.6k
Tore Vänngård Sweden	41	2.5k 2.0×	502 0.6×	813 1.3×	668 1.2×	250 0.6×	98	4.7k
Akitsugu Nakahara Japan	26	645 0.5×	783 1.0×	525 0.8×	408 0.7×	515 1.2×	118	2.1k
Michael D. Lowery United States	15	701 0.6×	600 0.8×	763 1.2×	483 0.8×	292 0.7×	23	2.0k
Roland Aasa Sweden	34	2.4k 2.0×	374 0.5×	838 1.3×	657 1.2×	199 0.5×	74	4.3k
Bill Durham United States	34	1.8k 1.5×	827 1.1×	555 0.9×	989 1.7×	601 1.4×	121	3.6k
Lyle H. Jensen United States	18	1.1k 0.9×	296 0.4×	609 0.9×	623 1.1×	178 0.4×	33	2.0k
George Lang United States	21	1.0k 0.8×	369 0.5×	1.2k 1.8×	1.6k 2.8×	299 0.7×	39	2.9k
Angel J. Di Bilio United States	28	1.2k 1.0×	546 0.7×	692 1.1×	748 1.3×	480 1.1×	45	2.8k

Countries citing papers authored by H. C. Freeman

Since Specialization

Citations

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

Fields of papers citing papers by H. C. Freeman

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by H. C. Freeman. 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. C. Freeman. The network helps show where H. C. Freeman may publish in the future.

Co-authorship network of co-authors of H. C. Freeman

This figure shows the co-authorship network connecting the top 25 collaborators of H. C. Freeman. A scholar is included among the top collaborators of H. C. Freeman 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. C. Freeman. H. C. Freeman 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

Zhang, Lianbo, Maxwell J. Crossley, Nicholas E. Dixon, et al.. (1998). Spectroscopic identification of a dinuclear metal centre in manganese(II)-activated aminopeptidase P from Escherichia coli: implications for human prolidase. JBIC Journal of Biological Inorganic Chemistry. 3(5). 470–483. 30 indexed citations

Ellis, P.J., Cyril A. Appleby, J.M. Guss, et al.. (1997). Structure of Ferric Soybean LeghemoglobinaNicotinate at 2.3 Å Resolution. Acta Crystallographica Section D Biological Crystallography. 53(3). 302–310. 19 indexed citations

Freeman, H. C., et al.. (1996). The Crystal Structure of cis -Inositol Monohydrate— Un Objet Retrouvé. Australian Journal of Chemistry. 49(3). 413–424. 6 indexed citations

Ellis, P.J. & H. C. Freeman. (1995). XFIT – an Interactive EXAFSAnalysis Program. Journal of Synchrotron Radiation. 2(4). 190–195. 148 indexed citations

Fields, Barry A., H.H. Bartsch, H.D. Bartunik, et al.. (1994). Accuracy and precision in protein crystal structure analysis: two independent refinements of the structure of poplar plastocyanin at 173 K. Acta Crystallographica Section D Biological Crystallography. 50(5). 709–730. 42 indexed citations

Roberts, Victoria A., et al.. (1991). Electrostatic orientation of the electron-transfer complex between plastocyanin and cytochrome c. Journal of Biological Chemistry. 266(20). 13431–13441. 80 indexed citations

Collyer, Charles A., J.M. Guss, Yasutomo Sugimura, Fuminori Yoshizaki, & H. C. Freeman. (1990). Crystal structure of plastocyanin from a green alga, Enteromorpha prolifera. Journal of Molecular Biology. 211(3). 617–632. 102 indexed citations

Garrett, Thomas, et al.. (1984). The crystal structure of poplar apoplastocyanin at 1.8-A resolution. The geometry of the copper-binding site is created by the polypeptide.. PubMed. 259(5). 2822–5. 104 indexed citations

BIRKER, P. J. M. W. L., et al.. (1977). Bis(biuret)mercury(II) dichloride. Acta Crystallographica Section B. 33(1). 182–184. 8 indexed citations

10.

Freeman, H. C., et al.. (1977). DL-Cysteinatothallium(I). Acta Crystallographica Section B. 33(8). 2690–2692. 7 indexed citations

11.

Freeman, H. C., et al.. (1977). An X-ray and neutron diffraction study of aqua(L-glutamato)cadmium(II) hydrate. Acta Crystallographica Section B. 33(3). 801–809. 27 indexed citations

12.

Freeman, H. C., et al.. (1973). Total Mercury and Methylmercury Content of the American Eel (Anguilla rostrata). Journal of the Fisheries Research Board of Canada. 30(3). 454–456. 4 indexed citations

13.

Freeman, H. C., et al.. (1973). Mercury in canadian seals. Bulletin of Environmental Contamination and Toxicology. 10(3). 172–180. 44 indexed citations

14.

Freeman, H. C., et al.. (1973). The crystal and molecular structure of catena-μ-dichloro-bisimidazolecadmium(II). Acta Crystallographica Section B. 29(4). 903–906. 14 indexed citations

15.

Freeman, H. C., et al.. (1973). Sampling the Edible Muscle of the Swordfish (Xiphias gladius) for Total Mercury Analysis. Journal of the Fisheries Research Board of Canada. 30(8). 1251–1252. 10 indexed citations

16.

Freeman, H. C., et al.. (1970). Model compounds for metal–protein interaction: crystal structure of three platinum(II) complexes ofL- andDL-methionine and glycyl-L-methionine. Journal of the Chemical Society D Chemical Communications. 0(22). 1523–1524. 59 indexed citations

17.

Freeman, H. C., et al.. (1965). Crystallographic studies of metal–peptide complexes. II. Sodium glycylglycylglycinocuprate(II) monohydrate. Acta Crystallographica. 18(3). 381–392. 33 indexed citations

18.

Freeman, H. C., et al.. (1964). Crystallographic studies of metal–peptide complexes. I. Glycylglycylglycinocopper(II) chloride sesquihydrate. Acta Crystallographica. 17(6). 719–730. 30 indexed citations

19.

Hughes, E. W., H. L. Yakel, & H. C. Freeman. (1961). The crystal structure of biuret hydrate. Acta Crystallographica. 14(4). 345–352. 40 indexed citations

20.

Freeman, H. C., et al.. (1961). Crystallographic studies of the biuret reaction. I. Potassium bis-biuret cuprate(II) tetrahydrate, K₂[Cu(NHCONHCONH)₂].4H₂O. Acta Crystallographica. 14(4). 407–418. 40 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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