%0 Journal Article
%T Towards the Stepwise Assembly of Molecular Borromean Rings: A Donor-Acceptor Ring-in-Ring Complex
%A Forgan
%A Ross S.
%A Spruell
%A Jason M.
%A Olsen
%A John-Carl
%A Stern
%A Charlotte L.
%A Stoddart
%A J. Fraser
%J Journal of the Mexican Chemical Society
%D 2009
%I Sociedad Qu¨ªmica de M¨¦xico
%X the assembly of molecular borromean rings from constitutionally independent rings in a stepwise manner depends on the preparation of robust "ring-in-ring" complexes. the ¦Ð-electron rich macrocycle bis-1,5-dinaphtho[50]crown-14 (1) is shown to form a donor-acceptor ring-in-ring complex with the ¦Ð-electron poor cyclophane cyclobis(paraquat-4,4'-biphenylene) (24 + ) in solution. in the crystal superstructure of [12]¡¤4pf6, ch¡¤¡¤¡¤o interactions between the polyether loops of 1 and the bipyridinium units of 24 + could disfavor the threading of dialkylammonium components of a third ring.
%K borromean rings
%K ring-in-ring complex
%K donor-acceptor
%K supramolecular chemistry
%K crystal structure.
%U http://www.scielo.org.mx/scielo.php?script=sci_abstract&pid=S1870-249X2009000300009&lng=en&nrm=iso&tlng=en