ArticleAngewandte Chemie (International ed. in English)2026
A Free N-Heterocyclic Carbene and Its Metal Complex.
Article in Angewandte Chemie (International ed. in English), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
3 citing papers in PubMed.
- Revisiting the Gold-Carbon Stretching Frequency: Spectroscopic and Computational Analysis of N-Heterocyclic Carbene Monolayers on Nanostructured Gold Surfaces.Nano letters · 2026Article
- The crystalline radical anion salt of a free N-heterocyclic carbene.Chemical science · 2026Article
- Stable Synapse-Like Memory Switching in N-Heterocyclic Carbene Monolayers.Angewandte Chemie (International ed. in English) · 2026Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
10 authors.
Funding
Abstract
Classical carbenes are highly reactive species that have traditionally been regarded as transient intermediates, making direct structural characterization a challenge. Among them, N-heterocyclic carbenes (NHCs) stand out for their stability and broad applicability, yet atomic-scale insights into their structure and electronic properties remain limited. Here, we report the on-surface single-molecule characterization of a free NHC deposited on ultrathin insulating NaCl layers on Au(111), enabling direct investigation of a reactive carbene in its free form. Using a combination of scanning tunneling microscopy (STM), atomic force microscopy (AFM), and density functional theory (DFT), we resolve its molecular structure and frontier orbital with sub-molecular resolution. We further demonstrate the reactivity of the free NHC through its on-surface complexation with a gold atom. These results demonstrate that real-space techniques enable direct insights into the structure and reactivity of free NHCs, helping to connect molecular properties with their broader functional applications.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.