Tunable Spin-Crossover Behavior of the Hofmann-like Network {Fe(bpac)[Pt(CN) 4 ]} through Host-Guest Chemistry

Carlos Bartual-Murgui (1, 2) , Amal Akou (1) , Helena Shepherd (1) , Gábor Molnár (1) , J. Antonio Real (3) , Lionel Salmon (1) , Azzedine Bousseksou (1)

1 LCC - Laboratoire de chimie de coordination
2 LAAS - Laboratoire d'analyse et d'architecture des systèmes
3 ICMol - Instituto de Ciencia Molecular

A study of the spin-crossover (SCO) behavior of the tridimensional porous coordination polymer {FeACHTUNGTRENUNG(bpac)[Pt(CN)4]} (bpac=bis(4-pyridyl)acetylene) on adsorption of different mono- and polyhalobenzene guest molecules is presented. The resolution of the crystal structure of {FeACHTUNGTRENUNG(bpac)[Pt(CN)4]}·G (G=1,2,4-trichlorobenzene) shows preferential guest sites establishing p···p stacking interactions with the host framework. These host–guest interactions may explain the relationship between the modification of the SCO behavior and both the chemical nature of the guest molecule (electronic factors) and the number of adsorbed molecules (steric factors).

Mots clés: clathrates; host–guest systems; metal–organic frameworks; spin crossover; stacking interactions

Domaines: Chimie de coordination

Carlos Bartual-Murgui, Amal Akou, Helena Shepherd, Gábor Molnár, J. Antonio Real, et al.. Tunable Spin-Crossover Behavior of the Hofmann-like Network {Fe(bpac)[Pt(CN) 4 ]} through Host-Guest Chemistry. Chemistry - A European Journal, 2013, 19 (44), pp.15036-15043. ⟨10.1002/chem.201300227⟩. ⟨hal-02907497⟩