Two-step spin crossover by guest-disorder induced local symmetry breaking within a 3D Hofmann-like framework

A 3D Hofmann-like metal-organic framework has been prepared which contains a 2,1,3-benzothiadiazole-based pillaring ligand. Encapsulation of a polycyclic aromatic hydrocarbon, chrysene, within the pore structure leads to a new pathway to multi-step spin crossover behaviour in which the observed two-step spin transition arises due to the presence of multiple site environments associated with local guest positional effects within the host lattice.

Automated summary

A 3D Hofmann-like metal-organic framework with a 2,1,3-benzothiadiazole-based pillaring ligand has been synthesized. The encapsulation of a polycyclic aromatic hydrocarbon, chrysene, within the pore structure enables a new pathway to multi-step spin crossover behavior, where the observed two-step spin transition is attributed to the presence of multiple site environments and local guest positional effects within the host lattice.