Abstract
The synthesis, crystal structure, magnetic and calorimetric studies of a new clathrate compound of the Hofmann‐type spin crossover (SCO) metal‐organic framework (MOF) {Fe(bpb)[MII(CN)4]}·xGuest (bpb = bis(4‐pyridyl)butadiyne, and MII = Ni, Pt) with characteristic fsc topology is reported. The framework {Fe(bpb)[MII(CN)4]} can host up to 1.5 guest molecules of (trifluoromethyl)benzene and display complete one‐step cooperative SCO behavior. Our systematic study on {Fe(bpb)[Pt(CN)4]}·xGuest shows a general reciprocal correlation between the SCO temperature with the volume of the guest molecules.
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