The ubiquity of N-heterocyclic carbenes (NHCs) in chemical research typically arises from their potent stabilizing capabilities and role as innocent spectators to stabilize otherwise non-bottleable compounds and complexes. Here, the authors reveal how NHC coordination enables selective C(sp3)–H bond scission, unlocking well-defined tin macrocycles which contrast with the typical role of NHCs in stabilizing low-valent main group centres.
- Jennifer Klaucke
- Navutheya Sinthathurai
- Malte Fischer
