Unusual Spin Transition Behavior in 2,6-Bis((pyrazol-3-yl)-pyridine) Iron(II)-bis-oxalato-platinate(II)

详细信息    查看全文

• 作者：C. Matthias Grunert ; Harold A. Goodwin ; Chiara Carbonera ; Jean-Franç ; ois Lé ; tard ; Joachim Kusz ; Philipp G&uuml ; tlich
• 刊名：Journal of Physical Chemistry B
• 出版年：2007
• 出版时间：June 21, 2007
• 年：2007
• 卷：111
• 期：24
• 页码：G&uumltlich
• 全文大小：546K
• 年卷期：v.111,no.24(June 21, 2007)
• ISSN：1520-5207

文摘

[Fe(bpp)₂][Pt(ox)₂]·H₂O (with bpp = 2,6-bis(pyrazol-3-yl)-pyridine and ox = oxalate) was prepared, and itsspin crossover behavior was characterized. The two-step spin transition behavior changes over several cycles.The original behavior is restored when the sample is allowed to relax for a week. Furthermore, the ST exhibitsa strong dependence on the heating and cooling rate. Heating the compound at 1 K/min leads to a spintransition with a third step and a second plateau at ges/gifchars/gamma.gif" BORDER=0 >_HS ges/entities/ap.gif"> 0.8. Quenching the sample to 77 K also affects thespin transition behavior. The kinetic relaxation is followed after quenching and after light-induced excitedspin state trapping experiments.