Important Steric Effects Resulting from the Additional Substituent at Boron within Scorpionate Complexes Containing κ3-NNH Coordination Modes

Nikolaos Tsoureas, Rebecca F. Hope, Mairi F. Haddow, Gareth Owen

Research output: Contribution to journalArticlepeer-review

Abstract

The complexes [Ru(Tai)H(PPh3)2] (4) [Tai = HB(7-azaindolyl)3] and [Ru(ArBai)H(PPh3)2] [ArBai = Ar(H)B(7-azaindolyl)2; Ar = phenyl (5), mesityl (6) and 2-naphthyl (7)] have been prepared and fully characterised. Structural characterisation of complexes 4, 5 and 7 confirmed the expected κ3-NNH coordination mode of the azaindolyl-based ligands. In all complexes, the borohydride unit is located trans to the hydrido ligand, and the two triphenylphosphane ligands occupy sites trans to the two nitrogen donors. The strong Ru···H–B interaction means that the third substituent at the boron atom is held in close proximity to the ruthenium centre. In the case of complex 7, rotation of the naphthyl group about the boron centre is hindered by the triphenylphosphane substituents.
Original languageEnglish
Pages (from-to)5233-5241
JournalEuropean Journal of Inorganic Chemistry
Volume2011
Issue number34
DOIs
Publication statusPublished - 28 Oct 2011

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