A rigid anionic Janus bis(NHC) - new opportunities in NHC chemistry.
Nabila Rauf NazGregor SchnakenburgZsolt KelemenDalma GálLaszlo NyulasziRené T BoeréRainer K StreubelPublished in: Dalton transactions (Cambridge, England : 2003) (2020)
A phosphanido-type bridged bis(imidazolium) salt, readily prepared in two steps via reductive deselenization of a tricyclic 1,4-diphosphinine diselone, affords access to a novel anionic P-functional tricyclic bis(NHC) via deprotonation. The former also offers a P-functionalization/deprotonation sequence to access the first mixed P-substituted tricyclic bis(NHCs), as well as coordination of the phosphorus centers to rhodium(i) fragments.