Química Nova (Feb 2004)

Novel neutral iron(II) isocyanide maleonitrile dithiolate [Fe(S2C2(CN)2)(t-BuNC) 4] compound

  • Milton K. Morigaki,
  • Elias M. da Silva,
  • Carlos V. P. de Melo,
  • Carlos Larica,
  • Armando Biondo,
  • Jair C. C. Freitas,
  • Gilson H. M. Dias,
  • Holgadinei R. Ribeiro

DOI
https://doi.org/10.1590/S0100-40422004000100016
Journal volume & issue
Vol. 27, no. 1
pp. 76 – 78

Abstract

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FeBr2 reacts with the S2C2(CN)2(2-) ion (1:1 ratio) in the presence of an excess of t-BuNC in THF to give the mixed ligand [Fe(S2C2(CN)2)(t-BuNC) 4] compound. This neutral product with a formal oxidation state of two for the iron atom was characterized by conductivity measurements, and, i.r., Mössbauer, 13C and ¹H n.m.r. spectroscopy. There is a Fe-C pi back-donation strengthened towards isocyanide ligands, according to the data of 13C, ¹H n.m.r. and Mössbauer spectroscopy.

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