6533b833fe1ef96bd129c2aa

RESEARCH PRODUCT

Spin crossover in a catenane supramolecular system.

Azzedine BousseksouMiguel JulveM. Carmen MuñozFrançois VarretThierry GranierJosé Antonio RealEnrique Andrés

subject

Molecular switchCrystallographyMultidisciplinaryStereochemistrySpin crossoverChemistryCrossoverX-ray crystallographyCatenaneSupramolecular chemistryAtmospheric temperature rangeMagnetic susceptibility

description

The compound [Fe(tvp)(2)(NCS)(2)] . CH(3)OH, where tvp is 1,2-di-(4-pyridyl)-ethylene, has been synthesized and characterized by x-ray single-crystal diffraction. It consists of two perpendicular, two-dimensional networks organized in parallel stacks of sheets made up of edge-shared [Fe(II)](4) rhombuses. The fully interlocked networks define large square channels in the [001] direction. Variable-temperature magnetic susceptibility measurements and Mossbauer studies reveal that this compound shows low-spin to high-spin crossover behavior in the temperature range from 100 to 250 kelvin. The combined structural and magnetic characterization of this kind of compound is fundamental for the interpretation of the mechanism leading to the spin crossover, which is important in the development of electronic devices such as molecular switches.

yearjournalcountryeditionlanguage
1995-04-14Science (New York, N.Y.)
10.1126/science.268.5208.265https://pubmed.ncbi.nlm.nih.gov/17814788