Enforced η¹-Fluorenyl Coordination to Rhodium(I) with the [FluPPh₂NPh]^- Ligand

Abstract

The fluorenyl-phosphazene ligand 2 has been prepared and coordinated to the RhI(nbd) fragment. X-ray analyses and DFT calculations substantiate the preference of the re-sulting complex 3 for κ2-N,C over η5-fluorenyl coordination. Despite the associated geometry constraint, the coordination of the short phosphazene sidearm is shown to enforce η1-fluorenyl coordination.