Structure and magnetic properties of a new iron(II) citrate coordination polymer

Tadeja Birsa Čelič, Zvonko Jagličič, K. Lázár, Nataša Zabukovec Logar

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The new compound [Fe(H2cit)(H2O)] n (NICS-2) is the first neutral ferrous citrate carboxylate that has been synthesized up to now. The iron citrate coordination polymer was hydrothermally synthesized and the structure was solved using single-crystal X-ray diffraction. It crystallizes in an orthorhombic space group P212121 (No. 19), with a = 5.9470-(4), b = 10.4021-(5), c = 13.5773-(7)-Å, V = 839.91-(8)-Å3, Z = 4. Its structure consists of one-dimensional chains of corner-sharing FeIIO6 octahedra that are additionally cross-linked with citrate ligands. Chains are additionally stabilized into a pseudo-three-dimensional structure by hydrogen bonds. The measurement of magnetic properties revealed that the magnetic moment is almost constant above 100-K (μeff = 5.1-μB), but decreases rapidly below this temperature most probably due to the appearance of weak antiferromagnetic interactions between Fe atoms. Additionally, analysis of Mossbauer spectra confirmed the presence of divalent Fe atoms in the structure. Thermogravimetrical and X-ray high-temperature diffraction analyses showed the thermal stability of the material up to 548-K.

Original languageEnglish
Pages (from-to)490-495
Number of pages6
JournalActa Crystallographica Section B: Structural Science, Crystal Engineering and Materials
Volume69
Issue number5
DOIs
Publication statusPublished - Oct 2013

Fingerprint

citrates
coordination polymers
Citric Acid
Magnetic properties
Polymers
Iron
magnetic properties
iron
Atoms
Magnetic moments
Hydrogen bonds
Thermodynamic stability
Diffraction
Ligands
Single crystals
diffraction
X ray diffraction
X rays
Temperature
carboxylates

Keywords

  • coordination polymer
  • iron citrate
  • magnetic properties

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Metals and Alloys
  • Atomic and Molecular Physics, and Optics

Cite this

Structure and magnetic properties of a new iron(II) citrate coordination polymer. / Birsa Čelič, Tadeja; Jagličič, Zvonko; Lázár, K.; Zabukovec Logar, Nataša.

In: Acta Crystallographica Section B: Structural Science, Crystal Engineering and Materials, Vol. 69, No. 5, 10.2013, p. 490-495.

Research output: Contribution to journalArticle

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