Fe III in a low-spin state in caesium bis[3-ethoxysalicylaldehyde 4-methylthiosemicarbazonato(2–)-κ3O2,N1,S]ferrate(III) methanol monosolvate

Robyn Powell, Carl Schwalbe, Graham J. Tizzard, Petra Van Koningsbruggen*

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

The synthesis and crystal structure (at 100K) of the title compound, Cs[Fe(C11H13N3O2S2) 2] CH3OH, is reported. The asymmetric unit consists of an octahedral [FeIII(L)2]- fragment, where L 2- is 3-ethoxysalicylaldehyde 4-methylthiosemicarbazonate(2-) {systematic name: [2-(3-ethoxy-2-oxidobenzylidene)hydrazin-1-ylidene] (methylamino)methanethiolate}, a caesium cation and a methanol solvent molecule. Each L2- ligand binds through the thiolate S, the imine N and the phenolate O atoms as donors, resulting in an FeIIIS2N 2O2 chromophore. The O,N,S-coordinating ligands are orientated in two perpendicular planes, with the O and S atoms in cis positions and the N atoms in trans positions. The FeIII cation is in the low-spin state at 100K.

Original languageEnglish
Pages (from-to)595-598
Number of pages4
JournalActa Crystallographica Section C: Structural Chemistry
Volume70
Issue number6
Early online date17 May 2014
DOIs
Publication statusPublished - 15 Jun 2014

Bibliographical note

Funding: EPSRC

Supporting information for this paper is available from the IUCr electronic archives (Reference: SF3227).

Keywords

  • chromophores
  • crystal structure
  • iron(III)
  • low-spin structures
  • switching behaviour
  • thiosemicarbazones

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