Photoinduced phenomena and structural analysis associated with the spin-state switching in the[FeII(DPEA)(NCS)2]complex
| Autor: | Shin-ya Koshihara, Jean-François Létard, Eric Collet, Hervé Cailleau, Loïc Toupet, Galina S. Matouzenko, D. Glijer, Johan Hebert, M. Buron-Le Cointe, Elzbieta Trzop, H. Z. Lazar |
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| Rok vydání: | 2008 |
| Předmět: |
Diffraction
Thermal equilibrium Materials science Spin states Condensed matter physics Intermolecular force 02 engineering and technology Crystal structure 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Molecular physics 0104 chemical sciences Electronic Optical and Magnetic Materials Intramolecular force X-ray crystallography 0210 nano-technology Spin (physics) |
| Zdroj: | Physical Review B. 78 |
| ISSN: | 1550-235X 1098-0121 |
| DOI: | 10.1103/physrevb.78.134112 |
| Popis: | Out-of-equilibrium photoinduced switching from the low-spin to the high-spin state has been investigated on the iron(II) complex $[{\text{Fe}}^{(\text{II})}(\text{DPEA}){(\text{NCS})}_{2}]$ by both optical reflectivity and magnetic measurements under continuous light irradiation at low temperature. The photoinduced HS state can be observed up to 47 K and the relaxation process has been followed. Structural changes of both the temperature- and the photoinduced spin-state switching have been analyzed in detail by x-ray diffraction indicating no change of symmetry. Short intermolecular contacts and intramolecular deformations associated with the change of molecular spin state have been quantified. Actually a crossover behavior is observed at thermal equilibrium with however a quasiabrupt shape indicating significant cooperative effects. These aspects are compared between the temperature- and photoinduced spin crossovers. |
| Databáze: | OpenAIRE |
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