6533b860fe1ef96bd12c31da
RESEARCH PRODUCT
Exploiting Pressure To Induce a "Guest-Blocked" Spin Transition in a Framework Material.
Katrina A. ZenereLucía Piñeiro-lópezSuzanne M. NevilleKarena W. ChapmanFlorence RagonCameron J. KepertNatasha F. SciortinoJosé Antonio RealGregory J. HalderPeter D. Southonsubject
Steric effects010405 organic chemistryLigandChemistryStereochemistryHydrostatic pressureSpin transitionInternal pressure010402 general chemistry01 natural sciences0104 chemical sciencesInorganic ChemistryCrystallographyMoleculePhysical and Theoretical ChemistryPorositySpin-½description
A new functionalized 1,2,4-triazole ligand, 4-[(E)-2-(5-methyl-2-thienyl)vinyl]-1,2,4-triazole (thiome), was prepared to assess the broad applicability of strategically producing multistep spin transitions in two-dimensional Hofmann-type materials of the type [FeIIPd(CN)4(R-1,2,4-trz)2]·nH2O (R-1,2,4-trz = a 4-functionalized 1,2,4-triazole ligand). A variety of structural and magnetic investigations on the resultant framework material [FeIIPd(CN)4(thiome)2]·2H2O (A·2H2O) reveal that a high-spin (HS) to low-spin (LS) transition is inhibited in A·2H2O due to a combination of guest and ligand steric bulk effects. The water molecules can be reversibly removed with retention of the porous host framework and result in the emergence of an abrupt and hysteretic one-step spin transition due to the removal of guest internal pressure. A spin transition can, furthermore, be induced in A·2H2O (0–0.68 GPa) under hydrostatic pressure, as evidenced by variable-pressure structure and magnetic studies, resulting in a two-s...
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2016-10-06 | Inorganic chemistry |