Issue 45, 2012

Ionic compound containing iron phthalocyanine (FeIPc) anions and (C70)2 dimers. Optical and magnetic properties of (FeIPc) in the solid state

Abstract

Ionic compounds containing the anion of iron phthalocyanine (FeIPc), {(FeIPc)}·(cryptand[2,2,2]·[Na+])·(C6H4Cl2) (1), and the fullerene C70 and FeIPc anions, (C70)2·{(FeIPc)}6·(cryptand[2,2,2]·[Na+])8·(C6H4Cl2)8.65·(C6H14)0.35 (2), were obtained as single crystals. Their crystal structures and optical and magnetic properties were analyzed. Spectra of 1 and 2 manifest intense bands in visible-NIR range at 820, 690, 555, 528, 449, 400 and 316 nm attributed to (FeIPc). The four-coordinate (FeIPc) anions show an EPR signal with perpendicular and parallel components at g = 2.487 and g = 2.353 in 1 and g = 2.328 and g = 2.230 in 2. According to magnetic measurements the (FeIPc) anions have low spin (S = 1/2) state indicating d7 configuration for the FeI atoms with the odd electron on the dz2 orbital. Fullerene anions form singly bonded (C70)2 dimers in 2, the shape of which efficiently fitted with the large planar phthalocyanine anions to be surrounded completely by eight (FeIPc) anions. The (C70)2 dimers are diamagnetic and EPR silent up to 350 K. Both complexes contain channels formed by four (FeIPc) planes in 1 or four (FeIPc) planes and two (C70)2 dimers in 2. The channels are occupied by double chains of alternating cryptand[2,2,2]·[Na+] cations and solvent C6H4Cl2 molecules.

Graphical abstract: Ionic compound containing iron phthalocyanine (FeIPc)− anions and (C70−)2 dimers. Optical and magnetic properties of (FeIPc)− in the solid state

Supplementary files

Additions and corrections

Article information

Article type
Paper
Submitted
17 Jul 2012
Accepted
10 Sep 2012
First published
11 Sep 2012

Dalton Trans., 2012,41, 13841-13847

Ionic compound containing iron phthalocyanine (FeIPc) anions and (C70)2 dimers. Optical and magnetic properties of (FeIPc) in the solid state

D. V. Konarev, A. V. Kuzmin, S. V. Simonov, S. S. Khasanov, A. Otsuka, H. Yamochi, G. Saito and R. N. Lyubovskaya, Dalton Trans., 2012, 41, 13841 DOI: 10.1039/C2DT31587D

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