Vanadium and niobium diamidophosphine complexes and their reactivity

M P Shaver, Robert Thomson, B O Patrick, M D Fryzuk

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

The tridentate ligand precursors R'P(CH2SiMe2NR")(2) ((R'R'')[NPN]: R' = Cy, Ph; R" = Ph, Mes, Me) were prepared from metathesis reactions of a lithiated amine, chloro(chloromethyl)dimethylsilane, the appropriate 1degrees phosphine, and n-butyl lithium and were isolated as solvent adducts. Metathesis between (CyPh)[NPN]Li-2(OEt2), 2, and VCl3(THF)(3) afforded ((CyPh)[NPN]VCl)(2), 7, whose solid-state structure was established by X-ray crystallography. Reduction attempts of the ((R'R'')[NPN]VCl)(2) species with KC8 incorporated molecular nitrogen but were complicated by imide formation and ligand decomposition. Metathesis of 2 with NbCl2Me3 afforded the highly unstable complex (CyPh)[NPN]NbMe3, 15. Attempts to hydrogenate this species were unsuccessful.

Original languageEnglish
Pages (from-to)1431-1437
Number of pages7
JournalCanadian Journal of Chemistry
Issue number12
Publication statusPublished - Dec 2003


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