Structural Characterization of a Fluorido‐Amide of Niobium, and Facile CO ₂2 Incorporation Affording a Fluorido‐Carbamate

摘要

> We have prepared the first niobium(V) compounds bearing fluorido and monodentate amido ligands ( 1a – c ), which are tetranuclear cations, by the reaction between NbF ₅ and Me ₃ SiNMe ₂ in the presence of a chloride (or bromide) source. The fluorido/carbamato derivative NbF ₂ (O ₂ CNMe ₂ ) ₃ ( 2 ) was obtained in good yield from the reaction of NbF ₅ and Me ₃ SiNMe ₂ in the presence of carbon dioxide at 1 atm pressure and ambient temperature. All the products were characterized by analytical and spectroscopic (IR, multinuclear NMR) methods, and by X‐ray diffraction in the cases of 1b , c . DFT calculations were useful for elucidating the structures of the products and also for providing an insight into the reaction pathways.