6533b7dafe1ef96bd126e03d

RESEARCH PRODUCT

Enhanced porosity in a new 3D Hofmann-like network exhibiting humidity sensitive cooperative spin transitions at room temperature

Carlos Bartual-murguiCarlos Bartual-murguiAzzedine BousseksouLionel SalmonNorma Ortega-villarNorma Ortega-villarGábor MolnárJosé Antonio RealHelena J. ShepherdM. Carmen Muñoz

subject

ChemistryPorous Coordination PolymersHumidityNanotechnologyGeneral Chemistrylaw.inventionCrystallographylawSpin crossoverMaterials ChemistryMoleculeCrystallizationSpin (physics)Porosity

description

The porous coordination polymers (PCPs) of general formula {Fe(bpac)[M(CN)4]}·guest (M = Pt, Pd) exhibit larger channels than previously synthesised 3D-Hofmann-like PCP. The channels are partially occupied by uncoordinated guest bpac ligands and labile H2O molecules. These PCPs exhibit very scarce cooperative spin crossover behaviour around room temperature with a large hysteresis loop (up to 49 K) and also display sensitivity to humidity and guest molecules. The inclusion of bpac molecules in the 3D network can be avoided by adding competitive volatile molecules during the crystallization process, affording the guest-free material. The spin crossover behavior of different guest and guest-free materials is also presented.

https://doi.org/10.1039/c0jm04387g