Cover Picture: Reversible Mechanical Switching of Magnetic Interactions in a Molecular Shuttle (ChemistryOpen 1/2015)

Reversible Mechanical Switching of Magnetic Interactions in a Molecular Shuttle

An acid-base switchable molecular shuttle based on a [2]rotaxane, incorporating stable radical units in both the ring and dumbbell components, is reported. The [2]rotaxane comprises a dibenzo[24]crown-8 ring (DB24C8) interlocked with a dumbbell component that possesses a dialkylammonium (NH2 (+)) and a 4,4'-bipyridinium (BPY(2+)) recognition site. Deprotonation of the rotaxane NH2 (+) centers e...

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