A [2]catenane constructed around a rhodium(III) center used as a template.
Rhodium(III) has been used as a templating metal center for building a [2]catenane. In the first stage, a Rh(phen)(2) motif has been incorporated into a large ring. Subsequently, a 2,2'-bipyridine derivative has been threaded through the ring, this process being driven by coordination of the chelate to the Rh(III) center. The formation of the second ring has been performed using the ring-closing metathesis approach. Contrary to the other catenanes synthesized around transition metals, the second ring is formed at the rear of the coordination unit which it contains, by cyclizing two flexible end-functionalized fragments attached at the 4 and 4' positions of the 2,2'-bipyridine chelate.
Mobian
Pierre
P
Laboratoire de Chimie Organo-Minérale, Faculté de Chimie, UMR 7513 du CNRS, Université Louis Pasteur, 4 rue Blaise Pascal, 67070 Strasbourg Cedex, France.
Kern
Jean-Marc
JM
Sauvage
Jean-Pierre
JP