Hydrothermal synthesis and study of an inorganic–organic hybrid vanadate of a nickel(II) coordination complex with pyrazine, Ni3(C4H4N2)3(V8O23)
| Autor: | Edurne S. Larrea, José L. Mesa, María I. Arriortua |
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| Rok vydání: | 2011 |
| Předmět: |
Pyrazine
Absorption spectroscopy magntic properties Infrared spectroscopy chemistry.chemical_element MATERIALS SCIENCE Coordination complex ENGINEERING MECHANICAL chemistry.chemical_compound Hydrothermal synthesis MECHANICS OF MATERIALS General Materials Science PHYSICS CONDENSED MATTER infrared spectroscopy chemistry.chemical_classification Chemistry Mechanical Engineering Condensed Matter Physics X-ray diffraction organometalic compounds Crystallography Nickel Octahedron Mechanics of Materials X-ray crystallography |
| Zdroj: | Addi. Archivo Digital para la Docencia y la Investigación instname |
| ISSN: | 0025-5408 |
| DOI: | 10.1016/j.materresbull.2011.02.033 |
| Popis: | Highlights: {yields} A novel inorganic-organic hybrid vanadate of nickel(II) coordination complex with pyrazine has been synthesized hydrothermally. {yields} The thermal and spectroscopic behavior has been studied. {yields} The compound shows AFM interactions which has been fitted to a magnetic model of lineal chains. -- Abstract: The three-dimensional hybrid compound Ni{sub 3}(C{sub 4}H{sub 4}N{sub 2}){sub 3}(V{sub 8}O{sub 23}) has been synthesized by mild hydrothermal methods under autogenous pressure at 170 {sup o}C. The structure of the phase is stable until 380 {sup o}C. The removal of the pyrazine molecules from the structure induces its collapse. The IR spectrum shows the vibration modes of the pyrazine molecule and those of the [VO{sub 4}]{sup 3-} groups. A UV-visible spectrum shows the characteristic bands of the Ni(II) d{sup 8}-high-spin cation in a slightly distorted octahedral coordination. Magnetic measurements indicate the existence of antiferromagnetic interactions that can be fitted with a chain model to give g = 2.31, J/k = -5.3, and zJ'/k = -5.5. |
| Databáze: | OpenAIRE |
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