Temperature and pressure effects on the spin state of ferric ions in the [Fe(sal2-trien)][Ni(dmit)2] spin crossover complex
Thermal and pressure effects have been investigated on the [Fe(sal2-trien)][Ni(dmit)2] spin crossover complex by means of Mössbauer spectroscopic, calorimetric, X-ray diffraction and magnetic susceptibility measurements. The complex displays a complete thermal spin transition between the and spin st...
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| Format: | Journal Article |
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Pergamon
2008
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0022369708003363# http://hdl.handle.net/20.500.11937/12334 |
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| author | Szilagyi, Petra Dorbes, S. Molnár, G. Real, J. Homonnay, Z. Faulmann, C. Bousseksou, A. |
| author_facet | Szilagyi, Petra Dorbes, S. Molnár, G. Real, J. Homonnay, Z. Faulmann, C. Bousseksou, A. |
| author_sort | Szilagyi, Petra |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Thermal and pressure effects have been investigated on the [Fe(sal2-trien)][Ni(dmit)2] spin crossover complex by means of Mössbauer spectroscopic, calorimetric, X-ray diffraction and magnetic susceptibility measurements. The complex displays a complete thermal spin transition between the and spin states of FeIII near 245 K with a hysteresis loop of ca. 30 K. This transition is characterised by a change of the enthalpy, ?HHL=7 kJ/mol, entropy, ?SHL=29 J/Kmol, and the unit cell volume, ?VHL=15.4 Å3. Under hydrostatic pressures up to 5.7 kbar the thermal transition shifts to higher temperatures by ca. 16 K/kbar. Interestingly, at a low applied pressure of 500 bar the hysteresis loop becomes wider (ca. 61 K) and the transition is blocked at ~50% upon cooling, indicating a possible (irreversible) structural phase transition under pressure. |
| first_indexed | 2025-11-14T06:58:50Z |
| format | Journal Article |
| id | curtin-20.500.11937-12334 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T06:58:50Z |
| publishDate | 2008 |
| publisher | Pergamon |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-123342017-02-28T01:34:05Z Temperature and pressure effects on the spin state of ferric ions in the [Fe(sal2-trien)][Ni(dmit)2] spin crossover complex Szilagyi, Petra Dorbes, S. Molnár, G. Real, J. Homonnay, Z. Faulmann, C. Bousseksou, A. Magneticproperties Highpressure Phasetransitions Inorganiccompounds Thermal and pressure effects have been investigated on the [Fe(sal2-trien)][Ni(dmit)2] spin crossover complex by means of Mössbauer spectroscopic, calorimetric, X-ray diffraction and magnetic susceptibility measurements. The complex displays a complete thermal spin transition between the and spin states of FeIII near 245 K with a hysteresis loop of ca. 30 K. This transition is characterised by a change of the enthalpy, ?HHL=7 kJ/mol, entropy, ?SHL=29 J/Kmol, and the unit cell volume, ?VHL=15.4 Å3. Under hydrostatic pressures up to 5.7 kbar the thermal transition shifts to higher temperatures by ca. 16 K/kbar. Interestingly, at a low applied pressure of 500 bar the hysteresis loop becomes wider (ca. 61 K) and the transition is blocked at ~50% upon cooling, indicating a possible (irreversible) structural phase transition under pressure. 2008 Journal Article http://hdl.handle.net/20.500.11937/12334 http://www.sciencedirect.com/science/article/pii/S0022369708003363# Pergamon restricted |
| spellingShingle | Magneticproperties Highpressure Phasetransitions Inorganiccompounds Szilagyi, Petra Dorbes, S. Molnár, G. Real, J. Homonnay, Z. Faulmann, C. Bousseksou, A. Temperature and pressure effects on the spin state of ferric ions in the [Fe(sal2-trien)][Ni(dmit)2] spin crossover complex |
| title | Temperature and pressure effects on the spin state of ferric ions in the [Fe(sal2-trien)][Ni(dmit)2] spin crossover complex |
| title_full | Temperature and pressure effects on the spin state of ferric ions in the [Fe(sal2-trien)][Ni(dmit)2] spin crossover complex |
| title_fullStr | Temperature and pressure effects on the spin state of ferric ions in the [Fe(sal2-trien)][Ni(dmit)2] spin crossover complex |
| title_full_unstemmed | Temperature and pressure effects on the spin state of ferric ions in the [Fe(sal2-trien)][Ni(dmit)2] spin crossover complex |
| title_short | Temperature and pressure effects on the spin state of ferric ions in the [Fe(sal2-trien)][Ni(dmit)2] spin crossover complex |
| title_sort | temperature and pressure effects on the spin state of ferric ions in the [fe(sal2-trien)][ni(dmit)2] spin crossover complex |
| topic | Magneticproperties Highpressure Phasetransitions Inorganiccompounds |
| url | http://www.sciencedirect.com/science/article/pii/S0022369708003363# http://hdl.handle.net/20.500.11937/12334 |