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Important Steric Effects Resulting from the Additional Substituent at Boron within Scorpionate Complexes Containing κ3-NNH Coordination Modes by Nikolaos Tsoureas; Rebecca F. Hope; Mairi F. Haddow; Gareth R. Owen is a Chemistry article available to read on EtoBox.

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## Abstract The complexes [Ru(Tai)H(PPh~3~)~2~] (4) [Tai = HB(7‐azaindolyl)~3~] and [Ru(^Ar^Bai)H(PPh~3~)~2~] [^Ar^Bai = 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 κ^3^‐__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.

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Author

Nikolaos Tsoureas; Rebecca F. Hope; Mairi F. Haddow; Gareth R. Owen

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Ltd.; Wiley (ISSN 1434-1948)

Published

2011

Language

EN

Field

Chemistry (Physical Sciences)