Synthesis, crystal structure, and spectroscopic and magnetic properties of a dinuclear iron(III) complex asymmetrically bridged by a phenoxo and a methoxo group

Zeyrek C., Elmali A., Elerman Y.

ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES, cilt.60, sa.9, ss.940-944, 2005 (SCI-Expanded, Scopus) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 60 Sayı: 9
  • Basım Tarihi: 2005
  • Doi Numarası: 10.1515/znb-2005-0905
  • Dergi Adı: ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.940-944
  • Anahtar Kelimeler: dinuclear iron(III) complex, super-exchange interactions, antiferromagnetic coupling, Schiff base, imidazolidine, TRANSITION-METAL-COMPLEXES, MAGNETOSTRUCTURAL CORRELATIONS, SALICYLALDIMINE COMPLEXES, EXCHANGE INTERACTION, LIGAND
  • Ankara Üniversitesi Adresli: Hayır

Özet

A new dinuclear iron(III) derivative Fe2L(OCH3)Cl-2 (L = 1,3-bis[N-(5-chloro-2-hydroxybenzylidene)-2-aminoethyl]-2-(5-chloro-2-hydroxyphenyl)imidazolidine) has been synthesized, it crystal structure determined and magnetically characterized. The two iron(III) ions are asymmetrically bridged by a phenoxo and a methoxo group and separated by 3.150(2) angstrom. The magnetic susceptibility of the complex was measured over the range 5-349.3 K and the observed data were successfully simulated by the equation based on the spin-Hamiltonian operator H = -J (S) over right arrow (1) center dot (S) over right arrow (2), indicating very weak antiferromagnetic coupling between the iron ions with J = -11.3 cm(-1). The magnetic and structural parameters of the compound and the nature of the magnetic super-exchange interaction are discussed and compared with data of similar dinuclear iron(III) complexes.