Scanning Tunneling Study of the Assembly of Octa- and Tetraruthenium Supermolecules on Graphite

✍ Scribed by Dong-Lin Shieh; Kom-Bei Shiu; Jong-Liang Lin

• Publisher: John Wiley and Sons
• Year: 2004
• Tongue: English
• Weight: 214 KB
• Volume: 2004
• Category: Article
• ISSN: 1434-1948
• DOI: 10.1002/ejic.200300861

✦ Synopsis

Abstract

Surface layer structures of [{Ru~2~(CO)~4~(PMe~3~)~2~}(μ‐O~2~CCO~2~)]~4~ and [{Ru~2~(CO)~4~(PMe~3~)~2~}(μ‐O~2~CCH~2~CO~2~)]~2~ with [Ru~2~(CO)~4~(PMe~3~)~2~] building blocks cis‐ligated by either O~2~CCO~2~ or O~2~CCH~2~CO~2~ on highly oriented pyrolytic graphite (HOPG) have been investigated by scanning tunneling microscopy and spectroscopy. STM images of well‐ordered assemblies of these two molecules with molecular or submolecular resolution were obtained. These two molecules can adopt an orientation with their Ru−Ru bonds parallel or perpendicular to the substrate surface forming ordered 2D‐arrays with different layer structures and tunneling spectra. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004)