Jump to main content
Jump to site search

Issue 10, 2006
Previous Article Next Article

Synthesis of triester-functionalized molecular motors incorporating bis-acetylide trans-platinum insulating fragments

Author affiliations

Abstract

Bis-ferrocene compounds linked either by two triple bonds (1,4-di(ferrocenyl)butadiyne 1), or by the triple bond–platinum–triple bond sequence (trans-bis(ferrocenylethynyl)bis(triethylphosphine)platinum(II), 2) have been synthesized. The electronic coupling between the ferrocene groups has been estimated from the intensity of the intervalence transition in the electrochemically generated mixed valence complexes. Upon insertion of a platinum fragment a weak attenuation was observed, with the Vab parameter decreasing from 0.036 eV for 1 to 0.025 eV for 2. A theoretical study has also been performed, using a combination of DFT for geometry optimization and Extended Hückel Theory for the estimation of the electronic coupling. It was found that the electronic coupling decreases from 0.090 eV for 1 to 0.022 eV for a model of 2. In a second part of this work, we describe the synthesis of two molecular motors incorporating the ligand hydrotris[6-(ethoxycarbonyl)indazol-1-yl]borate which exhibits three pendant ester groups dedicated to be anchored onto an oxide surface. This stator is connected through a ruthenium centre to a pentasubstituted cyclopentadienyl rotor bearing ferrocene terminal electroactive groups, linked either by a phenylethynyl spacer (complex 4) or a spacer containing bis-acetylide trans-platinum insulating fragments (complex 8).

Graphical abstract: Synthesis of triester-functionalized molecular motors incorporating bis-acetylide trans-platinum insulating fragments

Back to tab navigation

Supplementary files

Article information


Submitted
18 Apr 2006
Accepted
21 Jun 2006
First published
18 Jul 2006

New J. Chem., 2006,30, 1429-1438
Article type
Paper

Synthesis of triester-functionalized molecular motors incorporating bis-acetylide trans-platinum insulating fragments

G. Vives, A. Carella, S. Sistach, J. Launay and G. Rapenne, New J. Chem., 2006, 30, 1429
DOI: 10.1039/B605509E

Social activity

Search articles by author

Spotlight

Advertisements