Synthesis and characterization of siloxy, aminoxy, and oxo complexes from the reaction of a tantalum amide silyl complex with oxygen

Inorg Chem. 2009 Apr 6;48(7):3073-9. doi: 10.1021/ic802380u.

Abstract

(Me(2)N)(4)Ta-SiBu(t)Ph(2) (1) reacts with O(2) to give (Me(2)N)(4)Ta(OSiBu(t)Ph(2)) (2), (Me(2)N)(3)Ta(ONMe(2))(OSiBu(t)Ph(2)) (3), and the unusual mu-oxo amino (Me(2)N)(2)(Ph(2)Bu(t)SiO)(2)(mu,eta(2)-Me(2)NCH(2)NMe)(2)Ta(2)(mu-O)(2) (4) containing two bridging chelating (aminomethyl)amides -N(Me)CH(2)NMe(2). The dimer 4 was characterized by X-ray crystallography. 2 also reacts with O(2) to give both 3 and 4. Reaction pathways in the formation of these complexes are discussed. In reactions of O(2) with d(0) 1 and 2, oxidation of the ligands is the prevailing pathway.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Amides / chemistry*
  • Crystallography, X-Ray
  • Models, Molecular
  • Organometallic Compounds* / chemical synthesis
  • Organometallic Compounds* / chemistry
  • Organosilicon Compounds / chemistry*
  • Oxides / chemistry*
  • Oxygen / chemistry*
  • Tantalum / chemistry*

Substances

  • Amides
  • Organometallic Compounds
  • Organosilicon Compounds
  • Oxides
  • Tantalum
  • Oxygen