SYNTHESES AND CHARACTERIZATIONS OF THE CYANIDE-BRIDGED HETERONUCLEAR POLYMERIC COMPLEXES WITH 2-ETHYLIMIDAZOLE


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Karaagac D., KÜRKÇÜOĞLU G. S.

BULLETIN OF THE CHEMICAL SOCIETY OF ETHIOPIA, cilt.30, sa.2, ss.263-272, 2016 (SCI İndekslerine Giren Dergi) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 30 Konu: 2
  • Basım Tarihi: 2016
  • Doi Numarası: 10.4314/bcse.v30i2.10
  • Dergi Adı: BULLETIN OF THE CHEMICAL SOCIETY OF ETHIOPIA
  • Sayfa Sayıları: ss.263-272

Özet

Three new cyano-bridged heteronuclear polymeric complexes, [Cu(etim)(3)Ni(CN)(4)](n), {[Zn(etim)(3)Ni(CN)(4)]center dot H2O}(n) and [Cd(etim)(2)Ni(CN)(4)](n) (etim = 2-ethylimidazole, hereafter abbreviated as Cu-Ni-etim, Zn-Ni-etim and Cd-Ni-etim) have been prepared in powder form and characterized by FT-IR and Raman spectroscopies, thermal (TG, DTG and DTA) and elemental analyses. The spectral features of the complexes suggest that the Ni(II) ion is four coordinate with four cyanide-carbon atoms in a square planar geometry, whereas the Cu(II) and the Zn(II) ions of the Cu-Ni-etim and the Zn-Ni-etim complexes are completed by nitrogen atoms of two cyano groups of [Ni(CN)(4)](2-) coordinated to the adjacent M(II) ions and three nitrogen atoms of the etim ligands. The Cd(II) ion of the Cd-Ni-etim complex is six-coordinate, completed with the two nitrogen atoms of the etim ligands and the four nitrogen atoms from bridging cyano groups. Polymeric structures of the Cu-Ni-etim and the Zn-Ni-etim complexes are 1D coordination polymer, while complex the Cd-Ni-etim presents a 2D network. The thermal decompositions in the temperature range 30-700 degrees C of the complexes were investigated in the static air atmosphere.