Two electrically different molecular conductors based on unsymmetrical Au(III)-Dithiolene complexes with similar crystal structures

Kazuya Kubo, Akiko Nakao, Yasuyuki Ishii, Masafumi Tamura, Reizo Kato, Gen Etsu Matsubayashi

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The cation radical salt based on unsymmetrical metal-dithiolene complexes [Au(ppy)(C 8H 4S 8)] 2[PF 6] (1) is a semiconductor with small activation energy under ambient pressure, and shows metallic behavior under high pressure. On the other hand, [Au(ppy)(C 8H 4 S 6O 2)] 2[BF 4] (2) is an insulator in spite of the structural similarity. Effective conduction pathways through the S⋯S contacts were found in the crystal structure of 1. However, the crystal of 2 contains no such conduction pathways. Comparison of the energy band structures of 1 and 2 suggests that even a subtle difference in cation arrangements makes a remarkable difference between the electrical properties of 1 and 2.

Original languageEnglish
Pages (from-to)417-420
Number of pages4
JournalJournal of Low Temperature Physics
Volume142
Issue number3-4
DOIs
Publication statusPublished - 2006 Feb 1
Externally publishedYes

Keywords

  • 71.20.Rv
  • 72.20.-i
  • 75.30.Cr
  • 75.30.Kz

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Materials Science(all)
  • Condensed Matter Physics

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