Crystal structure and magnetic properties of the layer ferrimagnet N(n-C5H11)4MnIIFeIII(C2O4)3
- 1 January 1996
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 9,p. 1839-1843
- https://doi.org/10.1039/dt9960001839
Abstract
The crystal structure and magnetic properties of the molecular-based ferrimagnet N(n-C5H11)4MnIIFeIII(C2O4)3 have been determined. The compound is orthorhombic, space group C2221, a= 9.707(3), b= 16.140(3), c= 19.883(7)Å(120 K), Z= 4[R 0.047 for I > 2σ(I)]. The structure consists of hexagonal layers of alternating MnII and FeIII bridged by C2O4 2–, separated by layers containing only N(n-C5H11)4 + with the alkyl chains extended, though with the terminal bonds twisted towards the gauche conformation. The terminal CH3 are embedded in the hexagonal pockets formed by three C2O4 2–. Since both metal ions have 3d5 configuration with 6A1 ground states the magnetic properties in the paramagnetic region mimic those of a two-dimensional antiferromagnet. Below TN= 27 K an uncompensated moment estimated as 8.78 × 10–5µB atom–1 arises, the direction of which was identified as parallel to the c axis by single-crystal magnetization measurements.Keywords
This publication has 8 references indexed in Scilit:
- A Concept for the Synthesis of 3-Dimensional Homo- and Bimetallic Oxalate-Bridged Networks [M2(ox)3]n. Structural, Moessbauer, and Magnetic Studies in the Field of Molecular-Based MagnetsJournal of the American Chemical Society, 1994
- A polymeric two-dimensional mixed-metal network. Crystal structure and magnetic properties of {[P(Ph)4][MnCr(ox)3]}Inorganica Chimica Acta, 1994
- Weak Ferromagnetic Behavior of the Manganese Alkylphosphonate Hydrates MnCnH2n+1PO3 · H2O, n = 1-4Journal of Solid State Chemistry, 1993
- Design of metal-complex magnets. Syntheses and magnetic properties of mixed-metal assemblies {NBu4[MCr(ox)3]}x (NBu4+ = tetra(n-butyl)ammonium ion; ox2- = oxalate ion; M = Mn2+, Fe2+, Co2+, Ni2+, Cu2+, Zn2+)Journal of the American Chemical Society, 1992
- Feature article. Organic-intercalated halogenochromates(II): low-dimensional magnetsJournal of Materials Chemistry, 1992
- Copper(II), a chemical Janus: two different (oxalato)(bipyridyl)copper(II) complexes in one single crystal. Structure and magnetic propertiesJournal of the American Chemical Society, 1984
- Anisotropic Superexchange Interaction and Weak FerromagnetismPhysical Review B, 1960
- Theory of Magnetism of NiPhysical Review B, 1960