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EnglishWhat is The Huynh Group website?
Updated
carbene.de is the research group website of Prof. Han Vinh Huynh at the National University of Singapore. It covers N-heterocyclic carbene (NHC) chemistry, from fundamental properties to catalytic applications, and serves as a hub for the group's research areas, publications, and its signature ligand-parameter resource.
Who runs it
The site represents The Huynh Group, led by Prof. Han Vinh Huynh at NUS. The group describes more than 20 years of research and 149 publications.
What the group works on
The site lists four research areas:
| Area | What it covers |
|---|---|
| Ligand Design | Tailored NHC, imine, and amide ligands, including donor-flexible frameworks and new carbenes beyond classical NHCs |
| Electronic Parameters | The Huynh Electronic Parameters (HEPs), which rank ligand donor strength on a unified ¹³C NMR-based scale |
| Catalysis | C–C coupling, C–H activation, hydroelementation, and alcohol activation |
| Organometallic Precursors | Precursor design for ALD and CVD thin-film deposition in the semiconductor industry |
The signature resource: Huynh Electronic Parameters
The HEPs are the group's most distinctive contribution. They provide unified scales for measuring the electronic donor strength of virtually any ligand — from classical Werner-type to organometallic — using ¹³C NMR spectroscopy.
- Introduced in 2009 for neutral monodentate ligands (HEP)
- Extended to bidentate ligands (HEP2) and anionic ligands (HEPx)
- Now covering hundreds of ligands, with 200+ HEP ligands ranked on the site
If you work on ligand design or need a comparable measure of donor strength across ligand classes, this is the section to start with.
Other things on the site
- Publications — the group's output record
- A textbook — The Organometallic Chemistry of N-Heterocyclic Carbenes (Wiley, 2017), described as the first textbook on NHCs, 368 pages
Who this site is for
It is aimed at chemists and materials researchers rather than a general audience: people looking for NHC ligand design ideas, a donor-strength scale for comparing ligands, or organometallic precursors for thin-film deposition. If you need practical entry points, the HEP resource and the publications list are the two most useful starting pages.