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A vitrational spectroscopic study of Hofmann type complexes of 3-methylpyridines and 4-methylpyridines.

Research output: Contribution to journalJournal articlepeer-review

  • Sevim Akyüz
  • Hümeyra Pasaoglu
  • J. Eric D. Davies
<mark>Journal publication date</mark>02/1994
<mark>Journal</mark>Journal of Molecular Structure
Issue number3
Number of pages7
Pages (from-to)215-221
Publication StatusPublished
<mark>Original language</mark>English


The FT-IR and Raman spectra of eight new Hofmann-type complexes of 3- and 4-methylpyridine, ML2Ni(CN)4 (M = Mn, Fe, Co or Zn; L = 3- or 4-methylpyridine) are reported. The structure consists of corrugated polymeric layers of [M---Ni(CN)4]∞ with methylpyridine molecules bound directly to the metal (M). For a given ligand (3-Mepy or 4-Mepy) the effects of metal---ligand bond formation on the ligand modes are examined and the metal sensitivity sequence of the ligand frequencies is found to be Mn < Fe < Co < Zn. The metal---ligand bond strengths of the methyl derivatives of pyridine in which the substituents are in different positions have also been compared and are found to increase in the order 3-Mepy < 4-Mepy for a given transition metal. The effective magnetic moments of the complexes are given.