Rigid, cross-conjugated macrocycles: a cyclic alternative to 4,4'-bipyridines in supramolecular chemistry.
[structure: see text]. The synthesis of two fully conjugated, rigid macrocyclic analogues to 4,4'-bipyridine is described. The use of these macrocycles in self-assembly processes is demonstrated by axial coordination to metalloporphyrins, and one system (R = Me) has been characterized by single-crystal X-ray crystallography.
Campbell
K
K
Department of Chemistry, University of Alberta, Edmonton, Alberta, T6G 2G2 Canada.
McDonald
R
R
Branda
N R
NR
Tykwinski
R R
RR