Pato Doldán, BreogánGómez Aguirre, Lilián ClaudiaBermúdez-García, Juan ManuelSánchez-Andújar, ManuelFondado Fondado, AlfonsoMira Pérez, JorgeCastro-García, SocorroSeñarís-Rodríguez, M. A.2015-02-092015-02-092013-09Pato-Doldán B, Gómez-Aguirre LC, Bermúdez-García JM, Sánchez-Andújar M, Fondado A, Mira J, et al. Coexistence of magnetic and electrical order in the new perovskite-like (C3N2H5)[mn(HCOO)3] formate. RSC Advances. 2013;3(44):22404-112046-2069http://hdl.handle.net/2183/14036[Abstract] In this work we further the structural characterization of the recently discovered (C3N2H5)[Mn(HCOO)3] metal–organic framework with perovskite-like structure, and we present its magnetic and dielectric properties up to 350 K. At low temperature, the C3N2H5+ imidazolium cations, that sit oblique within the cavities of the [Mn(HCOO)3]− framework structure, show a cooperative order resulting in an antiparallel arrangement of their electrical dipole moments. Very interestingly, it is only above 220 K that thermal energy seems to be able to break this antiferroelectric order, resulting in a linear increase of its dielectric constant with temperature. In addition, this Mn(II) compound is antiferromagnetic below TN = 9 K, with a slightly non-collinear arrangement of its magnetic moments, yielding to a weak ferromagnetism. Therefore, this is a new multiferroic material which exhibits coexistence of magnetic and electric ordering.engMetal–organic frameworkPerovskite-like structureMagnetic propertiesDielectric propertiesThermal energyMultiferroic materialjournal articleopen access