THE FT-IR SPECTRA OF TRANSITION-METAL 3-AMINOPYRIDINE TETRACYANONICKELATE COMPLEXES

FT-IR spectra of M(3apy)(2)Ni(CN)(4) {where M = Mn, Fe, Co, Ni, Cu, Zn or Cd; 3apy = 3-aminopyridine} complexes are reported for the first t ime in the 400-4000 cm(-1) range. The spectral features suggest that t he compounds are similar in structure to the Hofmann-type complexes wi th infinite polymeric layers formed with Ni(CN)(4)(2-) ions bridged by M(3apy)(2)(2+) cations. It is concluded that the ring nitrogen and no t the amino nitrogen is involved in complex formation. (C) 1998 Elsevi er Science B.V. All rights reserved.