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Kawaguchi Lab
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A lab that uses metal complexes to open up new reactions of stable molecules such as nitrogen.
AboutAbout the lab
Design and synthesis of functional metal complexes.
The Kawaguchi Lab designs and synthesizes metal complexes, in which ligands surround a metal ion, and studies the relationship between their structures and their properties and reactivity.
Using newly made metal complexes as sites for reactions, the lab is pioneering new reactions of small, unreactive molecules such as nitrogen, carbon monoxide, and carbon dioxide.
Coordination chemistry draws on knowledge of both organic and inorganic chemistry, and takes on the challenge of bringing out properties and reactivity never seen before.
Key terms
- Ligand
- A molecule or ion that surrounds and binds to a metal ion. The choice of ligand changes the properties of the complex
- Polydentate ligand
- A ligand that has multiple sites for binding to a metal within a single molecule
- Hydride complex
- A complex in which a hydrogen atom is bound to a metal. The lab studies the reactions of niobium and tantalum hydride complexes
- Activation
- Changing a stable, unreactive molecule into a state in which it reacts easily with other substances
ResearchResearch themes
The lab synthesizes metal complexes based on ligand design, with the aim of understanding the relationship between their structures and their properties and reactivity. Using newly synthesized metal complexes as sites for reactions, it is pioneering new reactions of small inorganic molecules such as dinitrogen, carbon monoxide, and carbon dioxide.
*Illustrative imageDesign and Synthesis of New Ligands
In studying the reactivity and properties of metal complexes, the lab places importance on the design and selection of ligands. It designs bulky ligands that stabilize a state with vacant sites around the metal (coordinatively unsaturated), and also studies hybrid ligands.
*Illustrative imageMetal Complexes Made with Polydentate Ligands
The lab designs polydentate ligands with flexible structures. Taking advantage of their characteristics, it studies the chemistry of mononuclear complexes, which contain one metal, and polynuclear complexes, which contain several.
*Illustrative imageElectron-Deficient Hydride Complexes
The lab works on the chemistry of hydride complexes in an electron-deficient state. It focuses on the fact that metal hydrides are thought to play a major role in the natural and industrial reactions that convert dinitrogen into ammonia.
*Illustrative imageReacting Small Molecules with Metal Complexes
The lab activates small molecules such as nitrogen, hydrogen, carbon monoxide, and carbon dioxide with metal complexes. It has discovered a reaction in which a hydride complex cleaves the triple bond of dinitrogen, and a reaction in which carbon monoxide molecules link together in a row.
MembersFaculty
The members of the Kawaguchi Lab are faculty and doctoral, master's, and undergraduate students.As of 2024
- ProfessorHiroyuki KawaguchiPublications ↗
- Assistant ProfessorYutaka IshidaPublications ↗
VoicesStudent voices
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Double vac line front view” Polimerek / CC BY-SA 3.0 (cropped)
- Design and Synthesis of New Ligands: “Trost-ligand-from-xtal-1999-Mercury-3D-balls” Ben Mills / Public domain (cropped)
- Metal Complexes Made with Polydentate Ligands: “Deferasirox–iron(III) complex” Fvasconcellos / Public domain (cropped)
- Electron-Deficient Hydride Complexes: “Iminoborane-NbCp2-complex-from-xtal-1988-3D-balls” Ben Mills / Public domain (cropped)
- Reacting Small Molecules with Metal Complexes: “Clover root nodules” Bwiltz / CC BY-SA 4.0 (cropped)
- Related lab (山下・森本研究室): “Gas line IMG 20230205” Jonathansammy / CC BY-SA 4.0 (cropped)
- Related lab (近藤研究室): “Vaccuum line IMG 20230205” Jonathansammy / CC BY-SA 4.0 (cropped)
- Related lab (谷口研究室): “Sinistral x dextral Limicolaria martensiana” Jxd / CC BY-SA 4.0 (cropped)
- Related lab (河野研究室): “Structure of NU-1000” Georgina P. Robertson, Sara Mosca, Celia Castillo-Blas, Florencia A. Son, Omar K. Farha, David A. Keen, Simone Anzellini, and Thomas D. Bennett / CC BY 4.0 (cropped)
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