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Guest-tuned spin crossover in flexible supramolecular assemblies templated by a halide (Cl-, Br- or I-).

M D DarawshehL A BarriosOlivier RoubeauS J TeatGuillem Aromí
Published in: Chemical communications (Cambridge, England) (2017)
Ligand 1,3-bis(3-(pyridin-2-yl)-1H-pyrazol-5-yl)benzene, L, forms mononuclear spin crossover complexes [FeL3]2+ with pendant arms that cause them to dimerize through numerous intermolecular interactions forming supramolecular (X@[FeL3]2)3+ cations. They have the flexibility to encapsulate Cl-, Br- or I-, which allow tuning the magnetic properties, in the solid state and in solution.
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