Observations on the steric impact of N- and S- donor scorpionate ligands

Graham Steel, Rajeev Rajasekharan-Nair, Iain A. Stepek, Alan R. Kennedy, John Reglinski, Mark D. Spicer

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Abstract

A comparison is made between the steric influences of a range of zinc hydrotris(pyrazolyl)borates and zinc hydrotris(thio-imidazolyl)borates ([Zn(TpR)Cl], [Zn(TmR)Cl],: R = Me, iPr, Ph tBu)) using inverse cone angle analysis. The study combines the crystallographic analysis of [Zn(TmiPr)Cl] and [Zn(TmPh)Cl] with the data previously deposited with the Cambridge Crystallographic Data Centre. The study suggests that despite efforts to manipulate the reactive pocket around the metal centre in M(TmR) complexes, the incorporation of sterically confining substituents onto the framework has a minimal effect at the metal centre unless the group attached is very large.
Original languageEnglish
Pages (from-to)2409-2412
Number of pages4
JournalEuropean Journal of Inorganic Chemistry
Volume2016
Issue number15-16
Early online date12 Oct 2015
DOIs
Publication statusPublished - 30 Jun 2016

Keywords

  • cone angles
  • scorpionate ligands
  • steric hindrance
  • substituent effects
  • zinc

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    Steel, G., Rajasekharan-Nair, R., Stepek, I. A., Kennedy, A. R., Reglinski, J., & Spicer, M. D. (2016). Observations on the steric impact of N- and S- donor scorpionate ligands. European Journal of Inorganic Chemistry, 2016(15-16), 2409-2412. https://doi.org/10.1002/ejic.201500924