New Rhenium Chalcogenides with (Re6X8)-Cluster Units

Abstract

A number of new ternary rhenium chalcogenides A4Re6X12 with A = T1, Cu, Na, Cs, X = Se; A = T1, Rb, X=S; and A2Re6X12 with A = Pb, X = S, Se, have been prepared using high temperature solid state reaction or ion exchange methods. These new phases are isostructural with K4Re6s12 (Space Group C2/c). The observed semiconducting and diamagnetic properties of these phases are consistent with the valence electron count (VEC) of 24. T1 and Re in T14Re6X12 (X = S, Se) have been confirmed by XANES to be in the +1 and +3 oxidation state, respectively. Ru can partially substitute for Re in T14RE6SE12 Forming solid solutions of T14RE6XRUXSE12. For x > or = 0.5, T1Re6-xRuSe12 shows metallic and antiferromagnetic behavior which suggest the possibility of VEC greater than 24.

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Document Details

Document Type
Technical Report
Publication Date
Jul 15, 1988
Accession Number
ADA197805

Entities

People

  • G. Huan
  • Guozhen Liang
  • M. Croft
  • M. Greaney
  • M. Greenblatt

Organizations

  • Rutgers University–New Brunswick

Tags

Communities of Interest

  • Advanced Electronics
  • C4I
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Absorption
  • Chemical Shifts
  • Chemistry
  • Conduction Bands
  • Crystal Structure
  • Crystals
  • Electrons
  • Elements
  • Energy Bands
  • Ion Exchange
  • Magnetic Properties
  • Measurement
  • Metals
  • Oxidation
  • Physical Properties
  • Valence Bands
  • X Rays

Fields of Study

  • Materials science

Readers

  • Materials Science and Engineering.
  • Surface Engineering/Surface Coating Technology.

Technology Areas

  • Microelectronics
  • Microelectronics - Graphene
  • Space