Functional properties of metal organic frameworks with perovskite structure

Hybrid materials that combine inorganic and organic components and that contain cavities and channels –the so-called metal organic frameworks (MOFs)– have been extensively studied in the last decade in view of their interesting potential applications, for example, in catalysis and gas storage (1). In addition to nanoporous MOFs, dense hybrid framework structures have also been discovered and are receiving increasing attention as they can display a wide range of interesting functional properties (magnetic, optical, dielectric, etc.) (2-4)).
In this context, the recent discovery of a sharp dielectric transition in the perovskite-like ABX3 compounds with A: (CH3)2NH2+ (DMA), B: Zn+2 or Mn+2, X: HCOO- Zn(HCOO)3[(CH3)2NH2] (3)  and Mn(HCOO)3[(CH3)2NH2] (5) has spurred the interest in this family of compounds and has opened a new direction in the search for novel dielectric and even multiferroic materials as the Mn-compound also shows weak ferromagnetism.
In this work, we report the most outstanding results found in our group on Mn(HCOO)3[(CH3)2NH2] and the synthesis, structure, magnetic, transport and dielectric properties of other new hybrid inorganic-organic compounds with perovskite-like structure.
(1) Yaghi, O.M. et al.; Nature 2003, 423, 705.
(2) Cheetham, A.K.; Rao C.N.R. Science 2007, 318, 58.; Ferey, G. Chem. Soc. Rev. 2008, 37, 191.
(3) Jain, P. et al. J. Am. Chem. Soc. 2008, 130, 10450.
(4) Wang, al. Inorg. Chem. 2004, 43, 4615.
(5) Sánchez-Andújar, M.; Presedo, S.; Yáñez-Vilar, S.; Castro-García, S., Shamir, J, Señarís-Rodríguez, M. A. Inorg. Chem. 2010, 49, 1921.

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