Synthesis and molecular structure of an orthometalated aminogallane, [MeGaN(CH2C6H4)(CH2Ph)]2

Academic Article

Abstract

  • Monitoring the thermolysis reaction of Me Ga with HN(CH Ph) in toluene with multinuclear NMR spectroscopy indicates the initial formation of [Me GaN(CH Ph) ] via 1,2-elimination of CH followed by additional 1,2-elimination steps that give the orthometalated gallium dimer [MeGaN(CH C H )(CH Ph)] in 65% yield. This is the first reported example of orthometalation of an aromatic ring carbon by gallium. Because [MeGaN(CH C H )(CH Ph)] forms prior to the complete conversion of (PhCH ) NH·GaMe to [Me GaN(CH Ph) ] , thermolysis of a Me Ga/HN(CH Ph) mixture is not a viable route to [Me GaN(CH Ph) ] . Instead it was prepared by a salt elimination reaction. The single-crystal X-ray diffraction analysis establishes the dimeric nature of the orthometalated compound and indicates a structure that is consistent with the NMR chemical shift assignements obtained using both 1-D and 2-D NMR techniques. 3 2 2 2 2 2 2 4 2 6 4 2 2 2 6 4 2 2 2 2 3 2 2 2 2 3 2 2 2 2 2 2
  • Published In

  • Organometallics  Journal
  • Digital Object Identifier (doi)

    Author List

  • Schauer SJ; Lake CH; Watkins CL; Krannich LK
  • Start Page

  • 5641
  • End Page

  • 5644
  • Volume

  • 15
  • Issue

  • 26