Structural Transition Induced by Charge-Transfer in RbMn[Fe(CN) 6] - Investigation by Synchrotron-Radiation X-ray Powder Analysis

Yutaka Moritomo, Kenichi Kato, Akira Kuriki, Masaki Takata, Makoto Sakata, Hiroko Tokoro, Shin Ichi Ohkoshi, Kazuhito Hashimoto

Research output: Contribution to journalArticlepeer-review

54 Citations (Scopus)

Abstract

Temperature dependence of atomic coordinates is determined for RbMn[Fe(CN)6] by means of synchrotron-radiation (SR) X-ray powder structural analysis. We observed a structural transition from the cubic (F4̄3m; Z = 4) to the tetragonal (I4̄m2; Z = 2) phase at ≈210 K in the cooling run and at ≈300 K in the warming run. In the low-temperature tetragonal phase, we found Jahn-Tellar type distortion of the MnN6 octahedra and compression of the averaged Fe-C bond distance. These structural data suggest that the structural transition is triggered by the inter-metallic charge-transfer from the Mn(II) site to the Fe(III) site.

Original languageEnglish
Pages (from-to)2078-2081
Number of pages4
Journaljournal of the physical society of japan
Volume71
Issue number9
DOIs
Publication statusPublished - 2002 Sep 1
Externally publishedYes

Keywords

  • Rietveld structural analysis
  • Synchrotron-radiation X-ray powder diffraction
  • Transition metal cyanide

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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