A new cyano-bridged one-dimensional GdIIIFeIII coordination polymer with o-phenanthroline as the blocking ligand: Synthesis, structure, and magnetic properties

Rajesh Koner, Michael G.B. Drew, Albert Figuerola, Carmen Diaz*, Sasankasekhar Mohanta

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

27 Scopus citations

Abstract

Synthesis, structural characterization, and magnetic properties of a new cyano-bridged one-dimensional iron (III)-gadolinium (III) compound, trans-[Gd(o-phen)2(H2O)2(μ-CN) 2Fe(CN)4]n • 2no-phen (o-phen = 1,10-phenanthroline), have been described. The compound crystallizes in the triclinic P1̄ space group with the following unit cell parameters: a = 10.538(14) Å, b = 12.004(14) Å, c = 20.61(2) Å, α = 92.41(1)°, β = 92.76(1)°, γ = 112.72(1)°, and Z = 2. In this complex, each gadolinium (III) is coordinated to two nitrile nitrogens of the CN groups coming from two different ferricyanides, the mutually trans cyanides of each of which links another different GdIII to create -NC-Fe(CN)4-CN-Gd-NC- type 1-D chain structure. The one-dimensional chains are self-assembled in two-dimensions via weak C-H⋯N hydrogen bonds. Both the variable-temperature (2-300 K, 0.01 T and 0.8 T) and variable-field (0-50 000 Gauss, 2 K) magnetic measurements reveal the existence of very weak interaction in this molecule. The temperature dependence of the susceptibilities has been analyzed using a model for a chain of alternating classic (7/2) and quantum (1/2) spins.

Original languageEnglish (US)
Pages (from-to)3041-3047
Number of pages7
JournalInorganica Chimica Acta
Volume358
Issue number11
DOIs
StatePublished - Jul 1 2005

Keywords

  • Cyano-bridged
  • Gadolinium (III)
  • Heterometallates
  • Iron (III)
  • Magnetic property

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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