SCHEDULED MAINTENANCE
Mössbauer spectra and magnetic susceptibility measurement of mer-[Fe(amp)3]2+ and fac-[Fe(amp)3]2+[amp = 2-(aminomethyl)pyridine] in supercages of Y-zeolite reveal that mer-[Fe(amp)3]2+ is high-spin even at 78 K whereas the spin-state of fac-[Fe(amp)3]2+ changes gradually from high- to low-spin as the temperature is decreased from 293 to 78 K, suggesting structural restrictions on the complexes in the supercage.
Y. Umemura, Y. Minai, N. Koga and T. Tominaga, J. Chem. Soc., Chem. Commun., 1994, 893 DOI: 10.1039/C39940000893
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