Vibrational spectra, powder X-ray diffractions and physical properties of cyanide complexes with 1-ethylimidazole


KÜRKÇÜOĞLU G. S. , Kiraz F. C. , Sayin E.

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY, vol.149, pp.8-16, 2015 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 149
  • Publication Date: 2015
  • Doi Number: 10.1016/j.saa.2015.04.019
  • Journal Name: SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.8-16
  • Keywords: Cyanide-bridged complex, Heteronuclear complex, Tetracyanonickelate(II) complex, 1-Ethylimidazole complex, FT-IR and Raman spectra, Powder XRD, MAGNETIC-PROPERTIES, CRYSTAL-STRUCTURES, THERMAL ANALYSES, BENZENE, CD, NI, DERIVATIVES, NAPHTHALENE, COPPER(II), ANTHRACENE
  • Eskisehir Osmangazi University Affiliated: Yes

Abstract

The heteronuclear tetracyanonickelate(II) complexes of the type [M(etim)Ni(CN)(4)](n) (hereafter, abbreviated as M-Ni-etim, M = Mn(II), Fe(II) or Co(II); etim = 1-ethylimidazole, C5H8N2) were prepared in powder form and characterized by FT-IR and Raman spectroscopy, powder X-ray diffraction (PXRD), thermal (TG; DTG and DTA), and elemental analysis techniques. The structures of these complexes were elucidated using vibrational spectra and powder X-ray diffraction patterns with the peak assignment to provide a better understanding of the structures. It is shown that the spectra are consistent with a proposed crystal structure for these compounds derived from powder X-ray diffraction measurements. Vibrational spectra of the complexes were presented and discussed with respect to the internal modes of both the etim and the cyanide ligands. The C, H and N analyses were carried out for all the complexes. Thermal behaviors of these complexes were followed using TG, DTG and DTA curves in the temperature range 30-700 degrees C in the static air atmosphere. The FT-IR, Raman spectra, thermal and powder X-ray analyses revealed no significant differences between the single crystal and powder forms. Additionally, electrical and magnetic properties of the complexes were investigated. The FT-IR and Raman spectroscopy, PXRD, thermal and elemental analyses results propose that these complexes are similar in structure to the Hofmann-type complexes. (C) 2015 Elsevier B.V. All rights reserved.