Trigonal planar (D3h) AuI3 complex stabilized in a solid lattice

Jin Ho Choy, Young I.I. Kim, Seong Ju Hwang, Pham V. Huong

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

An unprecedented molecular AuI3 complex has been stabilized in the interlayer space of the Bi2Sr2CaCu2Oy lattice by reacting Au metal with IBi2Sr2CaCu2Oy. at 235 °C. The stoichiometry of this new intercalate phase is determined as (AuI3)0.25Bi2Sr2CaCu 2Oy by thermogravimetry and X-ray photoelectron spectroscopy. MicroRaman and Au L3-edge extended X-ray absorption fine structure analyses reveal that Au and I are stabilized as the molecular AuI3 (D3h) in the Bi2Sr2CaCu2Oy lattice with a uniform Au-I bond length of 2.56 Å. According to the powder X-ray diffraction pattern analysis, the basal spacing increases from 15.30 to 18.55 Å with an expansion of 3.25 Å implying that the AuI3 molecules are intercalated into the [Bi-O] double layers with a parallel geometry. The present AuI3 entity is the first of the three coordinated molecular Au-complexes to be stabilized in a solid matrix at room temperature.

Original languageEnglish
Pages (from-to)7273-7277
Number of pages5
JournalJournal of Physical Chemistry B
Volume104
Issue number31
DOIs
Publication statusPublished - 2000 Aug 10

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry

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