Coordination behaviour of nicotinamide: an infrared spectroscopic study

Bayari S., Atac A., Yurdakul Ş.

JOURNAL OF MOLECULAR STRUCTURE, cilt.655, sa.1, ss.163-170, 2003 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 655 Sayı: 1
  • Basım Tarihi: 2003
  • Doi Numarası: 10.1016/s0022-2860(03)00256-4
  • Dergi Adı: JOURNAL OF MOLECULAR STRUCTURE
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.163-170
  • Anahtar Kelimeler: infrared spectra, nicotinamide metal halide complexes, Hofmann-type complexes, DONOR-ACCEPTOR COMPLEXES, METAL HALIDE-COMPLEXES, TETRACYANONICKELATE COMPLEXES, HETEROCYCLIC LIGANDS, MAGNETIC-PROPERTIES, PYRIDINE, SPECTRA, AMIDES, WATER
  • Gazi Üniversitesi Adresli: Evet

Özet

A series of Hofmann-type complexes containing two nicotinamide(nia) molecules attached to transition metal (II) (M) tetracyanonickelate frame with the formula: M(nia)(2)Ni(CN)(4) (where M = Mn, Co, Ni, Cu or Cd) have been synthesised for the first time. Metal (II) halide complexes of nicotinamide complexes of the type [M(nia)(2)X-2 (M = Cd, Ni, Cu, Hg; X = Cl, Br) and Ni(nia)(4)Br-2 nia = nicotinamide] have also synthesised. The FTIR spectra are reported in the 4000-400 cm(-1) region. Vibrational assignments are given for all the observed bands. The analysis of the vibrational spectra indicates that there are some structure-spectra correlations. A pronounced change was observed in the N-H stretching frequencies of the NH2 group. It is proposed that the amide NH2 group influence by the intramolecular hydrogen bond in the complexes. The coordination effect on the nicotinamide modes is analysed. (C) 2003 Elsevier Science B.V. All rights reserved.