Synthesis and Characterization of Bis-Triruthenium Cluster Derivatives of an All Equatorial [60]Fullerene Tetramalonate

Thursday, 28 May 2015: 16:00
Lake Erie (Hilton Chicago)


Exohedral metal-C60 complexes exhibit unique physicochemical properties as a result of the metal cluster centers.1 This is important in the study of the reactivity and electrochemical properties of exohedral metal-C60 complexes, as it might result in the development of new nanomaterials.2

Kräutler et al. developed the orthogonal transposition method to synthesize C60 tetrakis-adducts with all addends located on the equatorial belt and the trans-1 positions available for further functionalizations.3 The presence of the tetrakis[di(ethoxycarbonyl)methano] groups should limit the number of possible bis-adduct regioisomers observed. We report that tetrakis[di(ethoxycarbonyl)-methano]-C60 reacts with triruthenium clusters to form the first anti-isomer C60-metal cluster complex : anti-[Ru3(CO)9]23222-C60[C(COOC2H5)2]4}. The two triruthenium groups are found in either an anti or a syn orientation, as determined by NMR. Only the anti form was characterized by X-ray crystallography, see structure below.


1. K. Lee, H. Song and J. T. Park, Acc. Chem. Res. 2003, 36, 78.

2.  Y.-J. Cho, T. K. Ahn, H. Song, K. S. Kim, C. Y. Lee, W. S. Seo, K. Lee,  S. K. Kim, D. Kim and J. T. Park, J. Am. Chem. Soc. 2005, 127, 2380.

3. R. Schwenninger, T. Müller and B. Kräutler, J. Am. Chem. Soc. 1997, 119, 9317.