Magnetic behavior of MnPS{sub 3} phases intercalated by [Zn{sub 2}L]{sup 2+} (LH{sub 2}: macrocyclic ligand obtained by condensation of 2-hydroxy-5-methyl-1,3-benzenedicarbaldehyde and 1,2-diaminobenzene)

Journal Article · Sun May 15 00:00:00 EDT 2011 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2011.03.009· OSTI ID:21494279

Spodine, E ^[1]; Valencia-Galvez, P ^[2]; Fuentealba, P ^[1]; Manzur, J ^[2]; Ruiz, D ^[1]; Venegas-Yazigi, D ^[2]; Paredes-Garcia, V ^[2]; Cardoso-Gil, R; Schnelle, W; Kniep, R ^[3]

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1. Facultad de Ciencias Quimicas y Farmaceuticas, Universidad de Chile (Chile)
2. Centro para el Desarrollo de Nanociencia y Nanotecnologia, Cedenna (Chile)
3. Max-Planck-Institut fur Chemische Physik fester Stoffe (Germany)

The intercalation of the cationic binuclear macrocyclic complex [Zn{sub 2}L]{sup 2+} (LH{sub 2}: macrocyclic ligand obtained by the template condensation of 2-hydroxy-5-methyl-1,3-benzenedicarbaldehyde and 1,2-diaminobenzene) was achieved by a cationic exchange process, using K{sub 0.4}Mn{sub 0.8}PS{sub 3} as a precursor. Three intercalated materials were obtained and characterized: (Zn{sub 2}L){sub 0.05}K{sub 0.3}Mn{sub 0.8}PS{sub 3}(1), (Zn{sub 2}L){sub 0.1}K{sub 0.2}Mn{sub 0.8}PS{sub 3}(2) and (Zn{sub 2}L){sub 0.05}K{sub 0.3}Mn{sub 0.8}PS{sub 3}(3), the latter phase being obtained by an assisted microwave radiation process. The magnetic data permit to estimate the Weiss temperature {theta} of {approx}-130 K for (1); {approx}-155 K for (2) and {approx}-130 K for (3). The spin canting present in the potassium precursor remains unperturbed in composite (3), and spontaneous magnetization is observed under 50 K in both materials. However composites (1) and (2) do not present this spontaneous magnetization at low temperatures. The electronic properties of the intercalates do not appear to be significantly altered. The reflectance spectra of the intercalated phases (1), (2) and (3) show a gap value between 1.90 and 1.80 eV, lower than the value observed for the K{sub 0.4}Mn{sub 0.8}PS{sub 3} precursor of 2.8 eV. -- Graphical Abstract: Microwave assisted synthesis was used to obtain an intercalated MnPS{sub 3} phase with a binuclear Zn(II) macrocyclic complex. A comparative magnetic study of the composites obtained by assisted microwave and traditional synthetic methods is reported. Display Omitted Highlights: {yields} A rapid and efficient preparation of intercalated MnPS{sub 3} composites by assisted microwave synthesis is described. {yields} The exchange of potassium ions of the precursor by the macrocyclic Zn(II) complex is partial. {yields} The composite obtained by assisted microwave synthesis retains the spontaneous magnetization, observed in the low temperature range of the magnetic susceptibility of the potassium precursor. {yields} The materials obtained by the conventional method loose the spontaneous magnetization in the low temperature range, which appears in the magnetic behaviour of the potassium precursor.

• OSTI ID: 21494279
• Journal Information: Journal of Solid State Chemistry, Vol. 184, Issue 5; Other Information: DOI: 10.1016/j.jssc.2011.03.009; PII: S0022-4596(11)00106-X; Copyright (c) 2011 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CLATHRATES
EV RANGE 01-10
LIGANDS
MAGNETIC SUSCEPTIBILITY
MAGNETIZATION
MANGANESE PHOSPHIDES
MANGANESE SULFIDES
MICROWAVE RADIATION
PRECURSOR
SPECTRA
SPIN
SYNTHESIS
TEMPERATURE RANGE 0065-0273 K
ZINC COMPLEXES
ANGULAR MOMENTUM
CHALCOGENIDES
COMPLEXES
ELECTROMAGNETIC RADIATION
ENERGY RANGE
EV RANGE
MAGNETIC PROPERTIES
MANGANESE COMPOUNDS
PARTICLE PROPERTIES
PHOSPHIDES
PHOSPHORUS COMPOUNDS
PHYSICAL PROPERTIES
PNICTIDES
RADIATIONS
SULFIDES
SULFUR COMPOUNDS
TEMPERATURE RANGE
TRANSITION ELEMENT COMPOUNDS