Journal
TETRAHEDRON
Volume 62, Issue 9, Pages 2008-2015Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2005.06.122
Keywords
fullerenes; cavitands; self-assembly; inclusion; coordination cages
Categories
Ask authors/readers for more resources
The X-ray study of self-assembled coordination cage 1, constituted of two tetrapyridyl-substituted resorcin[4]arene cavitands coupled through four square-planar palladium complexes is reported. The coordination cage, embracing an internal cavity of ca. 840 angstrom(3), reveals to have the right size for the inclusion of large molecules such as fullerenes. Cage I forms 1:1 complexes with methano[60]fullerene derivatives 3 and 4 bearing a dimethyl and a diethyl malonate addend, respectively. Evidence for inclusion complexation was provided by H-1 NMR spectroscopic studies and ESI-MS investigations, which unambiguously showed the formation of 1:1 fullerene-cage complexes. The association constants (K-a) were experimentally determined to be ca. 150 M-1 at 298 K in CD2Cl2. In both complexes 1(.)3 and 1(.)4, the malonate residue is threaded through one of the four lateral portals, as clearly shown by dockin. simulations. (c) 2005 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available