V-shaped Fe 3 III and linear Fe II/Fe III/Fe II complexes supported by phenyl-pyridine-2-yl- methanone oxime ligand: Solvothermal syntheses, structures and magnetic property

Wen Qian Chen, Yan Mei Chen, Tao Lei, Wei Liu, Yahong Li

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

Under solvothermal conditions, one polynuclear Fe III complex of formula [Fe 3{(py)C(ph)O} 4Cl 4][FeCl 4] (1) was synthesized from reaction of phenyl-pyridine-2-yl-methanone oxime (py)C(ph)NOH with FeCl 3, and one Fe II/Fe III/Fe II complex of composition [Fe 3{(py)C(ph) NO} 6][CH 3COO] (2) was prepared from treatment of (py)C(ph)NOH with Fe(OAc) 2. The most interesting synthetic feature of complex 1 is the in situ transformation of (py)C(ph)NOH into the (py)C(ph)O - ligand. Complexes 1 and 2 were characterized by X-ray single crystal diffraction, IR spectroscopy, and elemental analysis. X-ray analysis revealed that complex 1 contains a V-shaped Fe III core with two terminal Fe III atoms displaying distorted square-pyramidal geometries and one central Fe III ion exhibiting octahedron geometry. Complex 2 is a mixed-valence linear Fe II/Fe III/Fe II complex with all the three metal centers displaying distorted octahedron geometries. The low-temperature magnetic susceptibility measurement for the solid sample of 1 revealed the weak antiferromagnetic Fe III..Fe III interactions. Theoretical calculations based on density functional theory were performed using the crystal structure of complex 1.

Original languageEnglish
Pages (from-to)4-9
Number of pages6
JournalInorganic Chemistry Communications
Volume19
DOIs
Publication statusPublished - 2012 May 1

Keywords

  • Crystal structures
  • In situ reaction
  • Magnetic properties
  • Multinuclear iron complexes
  • Solvothermal synthesis

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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