Abstract
The [2]pseudorotaxane formed between the dicationic axle 1,2-bis-(4,4′-bipyridinium-mono-N-oxide)ethane and dibenzo-24-crown-8 ether (DB24C8) can act as a bridging ligand between metal centers to form metal organic rotaxane frameworks (MORFs). When cadmium(II) is used as the metal center the resulting structure is a network in which two [2]pseudorotaxanes, two ‘naked’ axles and two triflate anions coordinate to the Cd(II) center in a trans,-trans,-trans-arrangement. The two different linking ligands form a 2D ‘square’ net with only one direction comprised of rotaxanes. These nets layer in an A–B–A–B fashion with the crown ether units of one layer blocking the openings of the next layer to eliminate the formation of channels.
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