Metal valence structures in 1-D mixed-metal complexes [Ni1-xPdxX(chxn)2]X2 studied by solid NMR

Noriyoshi Kimura, Masataka Kano, Toshio Manabe, Masahiro Yamashita, Ryuichi Ikeda

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

13C magic-angle-spinning NMR spectra in solid were measured in mixed-metal 1-D complexes [Ni1-xPdxX(chxn)2]X2 (X: Cl, Br; 0.0≤x ≤1.0) where the antiferromagnetically coupled paramagnetic -X-Ni3+-X-Ni3+- chains are formed at x = 0.0, while the mixed-valence -X-Pd2+-X-Pd4+- state is made at x = 1.0. Upon increasing x from 0.0, 13C spectra in the Cα position in the chxn ligand was broadened and shifted from original Pd2+ and Pd4+ positions indicating the fluctuation of Pd valency in mixed states. A marked spectrum broadening observed in Cβ is also attributable to the effect from the partial mixing of paramagnetic Pd3+sites in consistent with reported ESR results.

Original languageEnglish
Pages (from-to)777-778
Number of pages2
JournalSynthetic Metals
Volume120
Issue number1-3
DOIs
Publication statusPublished - 2001 Mar 15
Externally publishedYes

Keywords

  • Nuclear Magnetic Resonance Spectroscopy

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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