Tomoharu Ama

959 citations

82 papers · 830 indexed · h-index 15

Inorganic Chemistry top 5%
Oncology top 10%
Materials Chemistry top 10%
Organic Chemistry top 10%
Electronic, Optical and Magnetic Materials top 10%

Co-authors: Takaji Yasui Hiroshi Kawaguchi Kazuo Nakamoto Jinsai Hidaka Ken‐ichi Okamoto Tetsuya Watanabe Takeshi Watanabe Hiroki Oshio
Topics: Metal complexes synthesis and properties (50 papers)Magnetism in coordination complexes (19 papers)Metal-Catalyzed Oxygenation Mechanisms (18 papers)
Cited by: Inorganic Chemistry Oncology Electronic, Optical and Magnetic Materials
Journals: Journal of the American Chemical Society The Journal of Physical Chemistry Coordination Chemistry Reviews
Partner nations: Japan Serbia United States

In The Last Decade

Tomoharu Ama

82 papers receiving 772 citations

Peers

Replace Takaji Yasui with:

Takaji Yasui Japan

G. Tauzher Italy

Dennis V. Stynes Canada

Elliott L. Blinn United States

Joseph E. Sarneski United States

I. I. CREASER Australia

Richard E. DeSimone United States

G. Liehr Germany

S. Hamman France

Bryan M. Gatehouse Australia

Tomoharu Ama relative to Takaji Yasui Japan Takaji Yasui's profile →

Citations per field

00.5×2×2.8×

Takaji Yasui · 1×

×1.2 388/335

IC

×0.8 384/464

ONCOL

×1.4 372/273

MC

×0.8 224/290

OC

×1.0 193/194

EOMM

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Countries citing papers authored by Tomoharu Ama

Since Specialization

Citations

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

Fields of papers citing papers by Tomoharu Ama

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Tomoharu Ama

This figure shows the co-authorship network connecting the top 25 collaborators of Tomoharu Ama. A scholar is included among the top collaborators of Tomoharu Ama 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 Tomoharu Ama. Tomoharu Ama 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

#	Work	Indexed citations
1	Pentaaquatri-μ₃-hydroxido-tris(iminodiacetato)-μ₃-oxido-tetrahedro-calcium(II)tricobalt(III) 2.54-hydrate 2010 ·Acta Crystallographica Section E Structure Reports Online ·Tomoharu Ama,(unknown),(unknown),Masanori Yamaguchi	3
2	A novel mixed valence tetranuclear nitrosyl complex bridged by tetraoxomolybdate 2005 ·Inorganic Chemistry Communications ·(unknown),Tomoko Hashimoto,(unknown),(unknown),Tomoharu Ama,Hiroshi Kawaguchi	8
3	Preparation and Crystal Structure of the trans(O5) Isomer of Magnesium(ethylenediamine-N,N,N′-triacetato-N′-3-propionato)cuprate(II) Octahydrate, Mg[Cu(ed3ap)]·8H2O. Stereochemistry of Octahedral Cu(II)-EDTA-Type Complexes in Relation to the Structure of the Ligand 2000 ·Bulletin of the Chemical Society of Japan ·Dušan J. Radanović,Tomoharu Ama,(unknown),(unknown),Dušanka Radanović,Hiroshi Kawaguchi	5
4	Three-Membered −SCoCH₂ Chelate Ring Complex Formed by Photodecarboxylation Reaction of Optically Active trans(O)-[Co(edtda)(en)]Cl (edtda = Ethylenedithiodiacetate) 1999 ·Inorganic Chemistry ·(unknown),(unknown),Tomoharu Ama,Hiroshi Kawaguchi,Ken‐ichi Okamoto,Jinsai Hidaka,Takaji Yasui	10
5	Trinuclear Cobalt(III) Complex Having Partial Cubane Co3O4 Core: Synthesis and Structural Analysis of the Complex Containing Bis(2-pyridylmethyl)amine 1997 ·Chemistry Letters ·Tomoharu Ama,Ken‐ichi Okamoto,(unknown),Hiroshi Kawaguchi,(unknown),Takaji Yasui	7
6	Metal Complexes of Peptides. VI. Di-μ-hydroxo–Dicobalt(III) Complexes Containing Peptides 1996 ·Bulletin of the Chemical Society of Japan ·Tomoharu Ama,(unknown),Hiroshi Kawaguchi,Takaji Yasui	3
7	Stereospecific Deuteration of Chelated 2,2′-Thiodiacetate(tda) in [Co(dien)(tda)]+ (dien = diethylenetriamine) Observed in the Acidic D2O Solutions 1995 ·Chemistry Letters ·(unknown),(unknown),Tomoharu Ama,Hiroshi Kawaguchi,Takaji Yasui	3
8	Metal Complexes of Peptides. IV. Cobalt(III) Complexes with β-Alanyl-l-histidine (Carnosine) Functioning as a Quadridentate Ligand 1989 ·Bulletin of the Chemical Society of Japan ·Tomoharu Ama,Hiroshi Kawaguchi,Masato Uchijima,(unknown),Takaji Yasui	5
9	Crystal and Molecular Structure of the Dicobalt(III) Complex Containing Bridging Di-μ-hydroxo Ligands, [(gly)(en)Co(μ-OH)2Co(gly)(en)]2+ 1989 ·Bulletin of the Chemical Society of Japan ·Kensaku Hamada,(unknown),T. Fujiwara,Tomoharu Ama	7
10	Stereoselective Isomerization Reaction of (Iminodiacetato)(ethylenediamine-N-acetato)cobalt(III), [Co(ida)(edma)], in a Basic Aqueous Solution 1989 ·Bulletin of the Chemical Society of Japan ·Hiroshi Kawaguchi,(unknown),Tomoharu Ama,Takaji Yasui	4
11	Unusual Coordination Mode of Carnosine (β-Alanyl-l-histidine) in a Cobalt(III) Complex 1988 ·Chemistry Letters ·Ken‐ichi Okamoto,Takaji Yasui,Hiroshi Kawaguchi,Tomoharu Ama,Jinsai Hidaka	6
12	Preparation and Characterization of the Dicobalt(III) Complexes Containing Bridging Di-μ-hydroxo Ligands 1987 ·Bulletin of the Chemical Society of Japan ·Tomoharu Ama,Hiroshi Kawaguchi,Takaji Yasui	7
13	THE SIX GEOMETRICAL ISOMERS OF BIS(4-AMINO-2-AZA-BUTANECARBOXYLATO)COBALT(III) ION, [Co(edma)2]+ 1983 ·Chemistry Letters ·Takaji Yasui,Hiroshi Kawaguchi,Tomoharu Ama	7
14	Matrix isolation infrared spectra of oxy-tetraphenylporphyrinatoiron(II) 1982 ·Journal of the American Chemical Society ·Kazuo Nakamoto,Tetsuya Watanabe,Tomoharu Ama,Marek W. Urban	21
15	PREPARATION AND REACTION OF THE UNSYMMETRICAL-FACIAL ISOMERS OF THE BIS(N-ALKYLIMINODIACETATO)COBALTATE(III) IONS 1981 ·Chemistry Letters ·Tomoharu Ama,Hiroshi Kawaguchi,Takaji Yasui	5
16	Metal Complexes of Amino Acids. XII. The Deuteration of α-Hydrogen Atoms in Cobalt(III) Complexes Containing α-Amino Carboxylates 1980 ·Bulletin of the Chemical Society of Japan ·Tomoharu Ama,Hiroshi Kawaguchi,(unknown),Takaji Yasui	8
17	Metal Complexes of Peptides. I. The Cobalt(III) Complexes Containing Dipeptidate and N-Methyliminodiacetate as Mixed Ligands 1980 ·Bulletin of the Chemical Society of Japan ·Hiroshi Kawaguchi,(unknown),Tomoharu Ama,Takaji Yasui	6
18	Metal Complexes of Amino Acids. X. The Preparation and Characterization of Cobalt(III) Complexes of the Type [Co(N)2(O)4] Containing β-Alanine 1977 ·Bulletin of the Chemical Society of Japan ·Tomoharu Ama,(unknown),(unknown),Takaji Yasui	5
19	CARBON-13 NUCLEAR MAGNETIC RESONANCES OF COBALT(III) COMPLEXES CONTAINING AMINO-ACIDS 1974 ·Chemistry Letters ·Tomoharu Ama,Takaji Yasui	2
20	Hexaammine, Tris(ethylenediamine), Glycinato, and l-Alaninato Complexes of a Triperiodatotetracobaltate(III) Condensed Anion 1973 ·Bulletin of the Chemical Society of Japan ·Tomoharu Ama,Jinsai Hidaka,Yoichi Shimura	6

About Tomoharu Ama

Tomoharu Ama is a scholar working on Inorganic Chemistry, Oncology and Electronic, Optical and Magnetic Materials, having authored 82 papers that have together received 830 indexed citations. Recurring topics across this work include Metal complexes synthesis and properties (50 papers), Magnetism in coordination complexes (19 papers) and Metal-Catalyzed Oxygenation Mechanisms (18 papers). The work is most often cited by research in Inorganic Chemistry (388 citations), Oncology (384 citations) and Electronic, Optical and Magnetic Materials (193 citations). Tomoharu Ama has collaborated with scholars based in Japan, Serbia and United States. Frequent co-authors include Takaji Yasui, Hiroshi Kawaguchi, Kazuo Nakamoto, Jinsai Hidaka, Ken‐ichi Okamoto, Tetsuya Watanabe, Takeshi Watanabe, Hiroki Oshio, Hiroshi Kawaguchi and James R. Kincaid. Their work appears in journals such as Journal of the American Chemical Society, The Journal of Physical Chemistry and Coordination Chemistry Reviews.

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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