6533b7d9fe1ef96bd126d4f4

RESEARCH PRODUCT

Structure and magnetic properties of [(REDA)Cl]2CuCl4 salts: A new series of ferromagnetic layer perovskites

Carlos J. Gómez-garcíaRoger D. WillettBrendan Twamley

subject

Inorganic chemistryCrystal structureDicationInorganic ChemistryCrystallographychemistry.chemical_compoundchemistryFerromagnetismOctahedronMaterials ChemistryCopper(II) chloridePhysical and Theoretical ChemistrySaturation (magnetic)Perovskite (structure)Monoclinic crystal system

description

Abstract The preparation, structure and magnetic properties of two mono- N -substituted ethylenediammonium copper chloride salts are reported. Both [(MEDA)Cl] 2 CuCl 4 and [(EEDA)Cl] 2 CuCl 4 assume monoclinic layered perovskite A 2 CuCl 4 type structures (here MEDA 2+ is the N -methylethylenediammonium dication and EEDA 2+ is the N -ethylethylenediammonium dication). In these structures, planar CuCl 4 2 - ions are linked together into layers of corner-sharing distorted octahedra via semi-coordinate Cu⋯Cl bonds. The magnetic studies reveal the presence of dominant ferromagnetic coupling in both compounds and analysis of the higher temperature data yielded J / k  = 19.29(1) K and 19.0(4) K for the methyl and ethyl derivatives, respectively. Further ac susceptibility studies reveal the onset of ferromagnetic ordering below 9.0 K for both compounds. The ferromagnetic ordering is further confirmed by the presence of hysteresis loops with rapid saturation in both compounds.

yearjournalcountryeditionlanguage
2005-11-01Polyhedron
https://doi.org/10.1016/j.poly.2005.03.077