Pyridine-2,5-dicarboxylic acid complexes of nickel(II) with 2,2'-bipyridine and 1,10-phenanthroline coligands; syntheses, crystal structures, spectroscopic and thermal studies

ÇOLAK A. T., Akduman D., YEŞİLEL O. Z., BÜYÜKGÜNGÖR O.

TRANSITION METAL CHEMISTRY, cilt.34, sa.8, ss.861-868, 2009 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 34 Sayı: 8
  • Basım Tarihi: 2009
  • Doi Numarası: 10.1007/s11243-009-9275-z
  • Dergi Adı: TRANSITION METAL CHEMISTRY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.861-868
  • Eskişehir Osmangazi Üniversitesi Adresli: Evet

Özet

Two pyridine-2,5-dicarboxylic acid (pydcH(2)) complexes of nickel(II) with 2,2'-bipyridine and 1,10-phenanthroline were synthesized and characterized by elemental, spectroscopic, thermal analysis, magnetic measurements and single crystal X-ray diffraction techniques. Both [Ni(pydc)(bipy)(2)]center dot 7H(2)O and [Ni(pydc)(phen)(2)]center dot 6.5H(2)O crystallize in the monoclinic system and P2(1)/c space group. The Ni(II) ions are coordinated by two bidentate bipy or phen ligands and one pydc dianion in a distorted octahedral geometry. The pydc ligand is coordinated through the pyridine nitrogen atom and oxygen atom of carboxyl group as a bidentate ligand. Both carboxylate groups of pydc are deprotonated but only the 2-carboxylate is coordinated to the metal. Thermal decompositions of the complexes have been studied over the range 30-600 A degrees C on heating in a static air atmosphere.