Cyclic Dimers of Metalloporphyrins as Tunable Hosts for Fullerenes: A Remarkable Effect of Rhodium(III)

Supramolecular interaction of fullerenes with cyclic dimers of metalloporphyrins (1-M, M=central metal ions) showed a pronounced dependence on the nature of the metal ions, whereby 1-RhMe/fullerene systems displayed extremely high association constants (ca. 108 M−1) and low dissociation activities. Crystal-structure analysis and NMR data suggested a charge-transfer interaction and van der Waals interactions between the host and guest. Supporting information for this article is available on the WWW under http://www.angewandte.com or from the author. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.