Raman Scattering by Ethylenediamines in Quasi-One-Dimensional Mixed-Valence Complexes [M(en)2][Pt(en)2Cl2](C104)4 (M = Pt, Pd, en = ethylenediamine)

Masamichi Sakai, Masayumi Hayakawa, Noritaka Kuroda, Yuichiro Nishina, Masahiro Yamashita

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

We have studied the effect of the order-disorder transition of the orientation of Perchlorate (007) ions on the vibrational modes of ethylenediamine (NH2CH2CH2NH2) in [M(en)2][Pt(en)2Cl2](C104)4, where en is ethylenediamine and M = Pt or Pd ion, by means of Raman spectroscopy. Upon the transition into the ordered phase, the spectra due to the CH stretching modes split into two groups on account of the difference in the coordination sites of Pt(II)[Pd(II)] and Pt(IV). The spectral separation between the two groups is about 20 cm-1 at 270 K. On the other hand, the NH stretching and the NCCN skeleton modes exhibit no splitting. These results indicate that the protons of the methylene (CH2) group of the ethylenediamine have a strong interaction with the internal motion of the Perchlorate ions which bind the CDW chains.

Original languageEnglish
Pages (from-to)1619-1627
Number of pages9
Journaljournal of the physical society of japan
Volume60
Issue number5
DOIs
Publication statusPublished - 1991 Mar
Externally publishedYes

Keywords

  • Perchlorate
  • Raman scattering
  • ethylenediamine
  • one-dimensional mixed-valence
  • order-disorder transition

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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