A supramolecular helicate with two independent Fe(II) switchable centres and a [Fe(anilate) 3 ] 3- guest.
Leoní A BarriosSimon J TeatOlivier RoubeauGuillem AromíPublished in: Chemical communications (Cambridge, England) (2023)
A biphenyl-spaced bis-pyrazolylpyridine ligand interacts with ferrous ions to engender a dimetallic helical coordination cage that encapsulates an Fe 3+ tris-anilate complex. The host-guest interaction breaks the symmetry of the Fe 2+ centers causing a differential spin crossover behavior in them that can be followed in great detail crystallographically.