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Competing ferro- and antiferromagnetic interactions in (manganese,sodium)phenylsilsesquioxane with metal oxide fragments

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Abstract

Magnetic measurements of individual (manganese,sodium)phenylsilsesquioxane containing eight MnII ions were performed. The magnetic arrangement of manganese ions in this cage-like compound was investigated. The magnetic moment of the cage molecule equals 21 μB (at 300 K), that is a consequence of the mutual antiferromagnetic compensation of four MnII ions, whereas the other four MnII ions have aligned spins. Hence, this metallasiloxane is a promising compound for the chemical design of molecular nanomagnets. At low temperatures, the antiferromagnetic coupling causes a decrease in the effective magnetic moment (to 16 μB at 40 K).

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Correspondence to M. M. Levitsky.

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Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 1, pp. 197–200, January, 2012.

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Levitsky, M.M., Bilyachenko, A.N., Dronova, M.S. et al. Competing ferro- and antiferromagnetic interactions in (manganese,sodium)phenylsilsesquioxane with metal oxide fragments. Russ Chem Bull 61, 200–203 (2012). https://doi.org/10.1007/s11172-012-0027-4

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  • DOI: https://doi.org/10.1007/s11172-012-0027-4

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