Crystal structures of chiral uranyl salen receptor bearing two pyrenyl arms are reported

What is it about?

Two chiral mono- and dinuclear uranyl–salen–pyrene complexes have been crystallized. In both complexes the uranium centres are seven-coordinated in a bipyramidal pentagonal geometry. The μ2-OH group bridges uranyl(VI) ions forming a double-stranded helical dimer with M handedness. Weak H-bond and cation⋯π interactions are the driving forces ruling crystal packing.

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Why is it important?

Slow evaporation of an equimolar solution containing host and guest is a powerfull technique that leads to the formation of stable supramolecular complexes