Vanadium (beta-(dimethylamino)ethyl)cyclopentadienyl complexes with diphenylacetylene ligands

Guohua Liu*, Xiaoquan Lu, Marcella Gagliardo, Dirk J. Beetstra, Auke Meetsma, Bart Hessen, Gaifen Liu

*Corresponding author for this work

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Abstract

Reduction of the V(III) (beta-(dimethylamino)ethyl)cyclopentadienyl dichloride complex [eta(5):eta(1-) C5H4(CH2)(2)NMe2]VCl2(PMe3) (1) with 1 equiv of Na/Hg yielded the V(II) dimer {[eta(5):eta(1)-C5H4(CH2)(2)NMe2]V(mu-Cl)}(2) (2). This compound reacted with diphenylacetylene in THF to give the V(II) alkyne adduct [eta(5):eta(1)-C5H4(CH2)(2)NMe2]VCl(eta 2-PhC CPh) (3). Further reduction of 2 with Mg in the presence of diphenylacetylene resulted in oxidative coupling of two diphenylacetylene groups to yield the diamagnetic, formally V(V), bent metallacyclopentatriene complex [eta(5):eta(1)-C5H4(CH2)(2)NMe2]V(C4Ph4) (4).

Original languageEnglish
Pages (from-to)2316-2320
Number of pages5
JournalOrganometallics
Volume27
Issue number10
DOIs
Publication statusPublished - 26-May-2008

Keywords

  • POLYMERIZATION BEHAVIOR
  • PARAMAGNETIC-COMPLEXES
  • BOROHYDRIDE COMPOUNDS
  • CRYSTAL-STRUCTURE
  • ANCILLARY LIGAND
  • CARBON BONDS
  • REACTIVITY
  • ALKYNE
  • TRIMERIZATION
  • BIS(TRIMETHYLSILYL)ACETYLENE

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