Specific spectral properties of a photochromic ferromagnetic (C25H23N3O3Cl)CrMn(C2O4)3·H2O |
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| Authors: | S M Aldoshin N A Sanina V A Nadtochenko E A Yur&#;eva V I Minkin N A Voloshin V N Ikorskii and V I Ovcharenko |
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| Institution: | (1) Institute of Problems of Chemical Physics, Russian Academy of Sciences, 1 prosp. Akad. Semenova, 142432 Chernogolovka, Moscow Region, Russian Federation;(2) Southern Scientific Center of the Russian Academy of Sciences, 41 prosp. Chekhova, 344006 Rostov-on-Don, Russian Federation;(3) International Tomography Center, Siberian Branch of the Russian Academy of Sciences, 3a ul. Institutskaya, 630090 Novosibirsk, Russian Federation |
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| Abstract: | A molecular magnetic (C25H23N3O3Cl)CrMn(C2O4)3·H2O whose spiropyran cation contains a quaternized pyridine fragment in the side aliphatic chain was synthesized for the first
time. The compound possesses the properties of a ferromagnetic with T
c = 5.2 K and photochromic properties in the crystalline state. The photochemical properties of the hybrid compound were studied
by electronic and IR spectroscopies. Photochromic transformations of the spiropyran cation are accompanied by the appearance
of a broad absorption band in the region 400–600 nm in the electronic spectra and by reduction of intensity of the ν(Cspiro-O) IR band at 942 cm−1.
Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 6, pp. 1055–1061, June, 2007. |
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| Keywords: | molecular magnetics (tris)oxalates polyfunctional compounds photochromism spiropyrans |
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