Details
| Original language | English |
|---|---|
| Pages (from-to) | 227-230 |
| Number of pages | 4 |
| Journal | Inorganic chemistry communications |
| Volume | 8 |
| Issue number | 2 |
| Publication status | Published - Feb 2005 |
| Externally published | Yes |
Abstract
The complex [Fe(tzimpy) 2](ClO 4) 2 · 2H 2O (tzimpy = 2,4,6-tris-(benzimidazol-2-yl)pyridine) shows an abrupt spin crossover (S = 0-2 transition) above room temperature centered at T c = 323 K with a hysteresis width of ΔT = 35 K. The neutral iron(II) complex with deprotonated bzimpy ligands (bzimpy = 2,6- bis(benzimidazol-2-yl)pyridine) exhibits a gradual spin transition on the first heating with T c = 424 K. There are irreversible changes between T = 503 and 523 K: the liberation of the crystal water, the color change (blue-green) followed by a structure change. Next thermal cycles are reproducible though, heating/cooling paths are different from the first heating.
Keywords
- Cooperativeness, Iron(II) complexes, Magnetism, Spin crossover
ASJC Scopus subject areas
- Chemistry(all)
- Physical and Theoretical Chemistry
- Chemistry(all)
- Inorganic Chemistry
- Materials Science(all)
- Materials Chemistry
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In: Inorganic chemistry communications, Vol. 8, No. 2, 02.2005, p. 227-230.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Tuning the spin crossover above room temperature
T2 - Iron(II) complexes of substituted and deprotonated 2,6-bis(benzimidazol-2-yl)pyridine
AU - Boča, Roman
AU - Renz, Franz
AU - Boča, Miroslav
AU - Fuess, Hartmut
AU - Haase, Wolfgang
AU - Kickelbick, Guido
AU - Linert, Wolfgang
AU - Vrbová-Schikora, Martina
PY - 2005/2
Y1 - 2005/2
N2 - The complex [Fe(tzimpy) 2](ClO 4) 2 · 2H 2O (tzimpy = 2,4,6-tris-(benzimidazol-2-yl)pyridine) shows an abrupt spin crossover (S = 0-2 transition) above room temperature centered at T c = 323 K with a hysteresis width of ΔT = 35 K. The neutral iron(II) complex with deprotonated bzimpy ligands (bzimpy = 2,6- bis(benzimidazol-2-yl)pyridine) exhibits a gradual spin transition on the first heating with T c = 424 K. There are irreversible changes between T = 503 and 523 K: the liberation of the crystal water, the color change (blue-green) followed by a structure change. Next thermal cycles are reproducible though, heating/cooling paths are different from the first heating.
AB - The complex [Fe(tzimpy) 2](ClO 4) 2 · 2H 2O (tzimpy = 2,4,6-tris-(benzimidazol-2-yl)pyridine) shows an abrupt spin crossover (S = 0-2 transition) above room temperature centered at T c = 323 K with a hysteresis width of ΔT = 35 K. The neutral iron(II) complex with deprotonated bzimpy ligands (bzimpy = 2,6- bis(benzimidazol-2-yl)pyridine) exhibits a gradual spin transition on the first heating with T c = 424 K. There are irreversible changes between T = 503 and 523 K: the liberation of the crystal water, the color change (blue-green) followed by a structure change. Next thermal cycles are reproducible though, heating/cooling paths are different from the first heating.
KW - Cooperativeness
KW - Iron(II) complexes
KW - Magnetism
KW - Spin crossover
UR - http://www.scopus.com/inward/record.url?scp=11844259456&partnerID=8YFLogxK
U2 - 10.1016/j.inoche.2004.12.014
DO - 10.1016/j.inoche.2004.12.014
M3 - Article
AN - SCOPUS:11844259456
VL - 8
SP - 227
EP - 230
JO - Inorganic chemistry communications
JF - Inorganic chemistry communications
SN - 1387-7003
IS - 2
ER -