Ta(CNDipp)6: An Isocyanide Analogue of Hexacarbonyltantalum(0)

Khetpakorn Chakarawet, Zachary W. Davis-Gilbert, Stephanie R. Harstad, Victor G. Young, Jeffrey R. Long, John E. Ellis

Research output: Contribution to journalArticle

5 Scopus citations

Abstract

Hexakis(2,6-diisopropylphenylisocyanide)tantalum is the first isocyanide analogue of the highly unstable Ta(CO)6 and represents the only well-defined zerovalent tantalum complex to be prepared by conventional laboratory methods. Two prior examples of homoleptic Ta0 complexes are known, Ta(benzene)2 and Ta(dmpe)3, dmpe=1,2-bis(dimethylphosphano)ethane, but these have only been accessed via ligand co-condensation with tantalum vapor in a sophisticated metal-atom reactor. Consistent with its 17-electron nature, Ta(CNDipp)6 undergoes facile one-electron oxidation, reduction, or disproportionation reactions. In this sense, it qualitatively resembles V(CO)6, the only paramagnetic homoleptic metal carbonyl isolable under ambient conditions.

Original languageEnglish (US)
Pages (from-to)10577-10581
Number of pages5
JournalAngewandte Chemie - International Edition
Volume56
Issue number35
DOIs
StatePublished - Aug 21 2017

Keywords

  • 17-electron complex
  • disproportionation
  • isocyanide ligands
  • metalloradical
  • tantalum

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