Niobium–η-cyclopentadienyl compounds with imido and amido ligands derived from 2,6-dimethylaniline

Abstract

The new niobium imido complex [Nb(η-C₅H₅){N(C₆H₃Me₂-2,6)}Cl₂] 1* has been prepared. Its reactions with anionic reagents lead to a series of alkyl and amido derivatives [Nb(η-C₅H₅){N(C₆H₃Me₂-2,6)}MeCl] 2, [Nb(η-C₅H₅){N(C₆H₃Me₂-2,6)}{NH(C₆H₃Me₂-2,6)}Cl] 3, [Nb(η-C₅H₅){N(C₆H₃Me₂-2,6)}{NH(C₆H₃Me₂-2,6)}₂] 4*, [Nb(η-C₅H₅)₂{N(C₆H₃Me₂-2,6)}Cl] 5, [Nb(η-C₅H₅)₂{N(C₆H₃Me₂-2,6)}Me] 6 and [Nb(η-C₅H₅){N(C₆H₃Me₂-2,6)}{NH(C₆H₃Me₂-2,6)}Me] 7*. Variable temperature NMR studies on the amido complexes 3, 4 and 7 are reported (* indicates the crystal structure has been determined).