Low-valent pentafulvene titanium dinitrogen complex as a precursor for cationic titanium complexes

Axel Scherer, Detlev Haase, Wolfgang Saak, Ruediger Beckhaus*, Auke Meetsma, Marco W. Bouwkamp, Rüdiger Beckhaus

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

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Abstract

Treatment of titanium dinitrogen complex [Cp*(eta(6)-C(5)H(4)=C(10)H(14))Ti](2)(mu-N(2)) (1) with ferrocenium borate, [Cp(2)Fe][BPh(4)], in THF results in oxidation of the titanium center, affording the titanium(IV) pentafulvene compound [Cp*(eta(6)-C(5)H(4)=C(10)H(14))Ti(THF)][BPh(4)] (2). Treatment of I with anilinium reagent [PhNMe(2)H][BPh(4)] results ill the formation of cationic titanocene(III) complexes. In THF, the titanocene cation is stabilized by two THF solvent molecules, whereas the tetraphenylborate anion is bound to the metal center when the reaction is performed in toluene its it solvent, Treatment of 1 with B(C(6)F(5))(3) affords zwitterionic [Cp*{eta(5)-C(5)H(3)(C(11)H(14))(B{C(6)F(5)}(3)}Ti(THF)] (7). Results show the versatility of pentafulvene complex 1 in the preparation of cationic titanium complexes.

Original languageEnglish
Pages (from-to)6969-6974
Number of pages6
JournalOrganometallics
Volume28
Issue number24
DOIs
Publication statusPublished - 28-Dec-2009

Keywords

  • OLEFIN POLYMERIZATION
  • CRYSTAL-STRUCTURE
  • ORGANOMETALLIC CHEMISTRY
  • METALLOCENE COMPLEXES
  • CATALYSTS
  • TITANOCENE
  • TRIS(PENTAFLUOROPHENYL)BORANE
  • TETRAPHENYLBORATE
  • DERIVATIVES
  • REACTIVITY

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