Ordered assembly of octa- and tetra-metallic supramolecules on graphite

Dong Lin Shieh, Kom Bei Shiu, Jong Liang Lin

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

The layer structures of {[Ru2(CO)4(PMe 3)2](μ-O2CCO2)}4 and {[Ru2(CO)4(PMe3)2](μ-O 2CCH2CO2)}2 on HOPG have been investigated by scanning tunneling microscopy. The STM image of the first compound shows an ordered array of equivalent, bright lobes which has a unit cell of 6.8±0.2×6.8±0.2 Å2 with an included angle of 93±2°. The STM image of the latter shows a unit cell of the same lengths, but with a different included angle of 70±2°. From the comparisons between the STM image and the molecular structures, it strongly suggests that the bright lobes in the STM images are due to the [Ru2(CO)4(PMe3)2] units of both molecules and the PMe3 groups pointing toward or away the HOPG surface. Based on the ordered away of the STM images, it is established that the layer structure of {[Ru2(CO)4(PMe 3)2](μ-O2CCO2)}4 on HOPG has a unit cell of 13.6×13.6 Å2 with an included angle of 93° and that the {[Ru2(CO)4(PMe 3)2](μ-O2CCH2CO 2)}2 layer has a unit cell of 14.4×7.9 Å 2 with an included angle of 60°.

Original languageEnglish
Pages (from-to)L7-L12
JournalSurface Science
Volume548
Issue number1-3
DOIs
Publication statusPublished - 2004 Jan 1

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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