Oxidized phthalocyanines are widely used in the design of optical, magnetic and conducting materials.
In this NJC Letter, Dmitri V. Konarev and co-workers (Institutes of Problems of Chemical Physics and Solid State Physics, Russia) demonstrated that the reduction of phthalocyanines with strong metallocene donors like decamethylchromocene can also lead to the preparation of molecular magnets. In particular, the negatively charged iron phthalocyanine (Cp*2Cr+)(FeIPc–)(C6H4Cl2)4 is a soft ferrimagnet showing hysteresis with a small coercive field and a bifurcation temperature of about 5 K.
This original strategy should allow the extension of the molecular-based magnet family by exploiting metal-containing and metal-free phthalocyanines.
“Structure and magnetic properties of ionic compound (Cp*2Cr+)·(FeIPc−)·(C6H4Cl2)4 containing negatively charged iron phthalocyanine”, Dmitri V. Konarev, Leokadia V. Zorina, Salavat S. Khasanov, El’za U. Hakimova and Rimma N. Lyubovskaya, New J. Chem., 2012, Advance Article, DOI: 10.1039/C1NJ20858F.
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