Synthesis and reactions of (tert-butylimido)bis(eta-cyclopentadienyl)niobium cations: NMR evidence for d(0) olefin cations [Nb{(eta-C5H5)(2)}((NBu)-Bu-t)(eta-C2H4)][B(C6F5)(4)] and [Nb{(eta-C5H4)-CMe2(eta-C5H4)}((NBu)-Bu-t)(eta-C2H3Me)][B(C6F5)(4)]

M J Humphries, R E Douthwaite, M L H Green

Research output: Contribution to journal › Article › peer-review

Abstract

The new (tert-butylimido)eta-cyclopentadienylniobium compounds [Nb(eta-C5H5)(2)((NBu)-Bu-t)(O3SCF3)] 1*, [Nb(eta-C5H5)(2)((NBu)-Bu-t)(PMe3)][O3SCF3] 2*, [Nb(eta-C5H5)(2)((NBu)-Bu-t)][MeB(C6F5)(3)] 3, [Nb(eta-C5H5)(2)((NBu)-Bu-t)][B(C6F5)(4)] 4, [Nb(eta-C5H5)(2)((NBu)-Bu-t)(eta-C2H4)][B(C6F5)(4)] 5, [Nb{(eta-C5H4)(2)CMe2}((NBu)-Bu-t)(O3SCF3)] 6, [Nb{(eta-C5H4)(2)CMe2}((NBu)-Bu-t)][B(C6F5)(4)] 7, [Nb{(eta-C5H4)(2)CMe2}((NBu)-Bu-t)(eta-C2H4)][B(C6F5)(4)] 8 and [Nb{(eta-C5H4)(2)CMe2}((NBu)-Bu-t)(eta-C3H6)][B(C6F5)(4)] 9 have been prepared and characterised; * indicates the crystal structure has been determined.

Original languageEnglish
Pages (from-to)2952-2959
Number of pages8
JournalJOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS
Issue number17
DOIs
Publication statusPublished - 2000

Keywords

  • SANDWICH IMIDO COMPLEXES
  • C-H ACTIVATION
  • D-METAL ACIDS
  • HALF-SANDWICH
  • TRANSITION-METALS
  • BOND ACTIVATION
  • STRUCTURAL CHARACTERIZATION
  • CRYSTAL-STRUCTURES
  • NIOBIUM
  • DERIVATIVES

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