Structural and spectroscopic characterisation of bis-ligand complexes of iron(II), nickel(II) and nickel(III) with the hydrotris(methimazolyl)borate anion: soft S-6 donor sets generating a weak ligand field

M. Garner, K. Lewinski, A. Pattek-Janczyk, J. Reglinski, B. Sieklucka, M.D. Spicer, M. Szaleniec

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34 Citations (Scopus)

Abstract

Reaction of iron(II) and nickel(II) halides with sodium hydrotris(methimazolyl) borate (NaTm) results in the formation of 2 : 1 complexes [M(Tm)(2)]. Crystallographic characterisation reveals in both cases trigonally distorted octahedral geometry in an S-6 donor set. Spectroscopic properties indicate that the Tm ligand generates a weak ligand field, with Dq between that of H2O and Cl- and this is confirmed by the high-spin configuration of the iron(II) complex. Both complexes display classical paramagnetic behaviour. Mossbauer spectroscopy of the iron complex is also consistent with a high-spin complex. Reaction of NiCl2.6H(2)O with [Tl(Tm)] results in a small quantity of a material which is crystallographically demonstrated to be [Ni(Tm)(2)]Br.
Original languageEnglish
Pages (from-to)1181-1185
Number of pages4
JournalDalton Transactions
Volume2003
Issue number6
DOIs
Publication statusPublished - 2003

Keywords

  • MOLECULAR-STRUCTURE
  • THIOETHER COMPLEX
  • CRYSTAL-STRUCTURE
  • ZINC COMPLEX
  • 1
  • 4
  • 7-TRITHIACYCLONONANE
  • <NI(<9>ANES3)2>2+
  • ELECTROCHEMISTRY
  • CHEMISTRY
  • CORE

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