Reversible Switching of a Cobalt Complex by Thermal, Pressure, and Electrochemical Stimuli: Abrupt, Complete, Hysteretic Spin Crossover

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• 作者：Matthew G. Cowan ; Juan Olgu铆n ; Suresh Narayanaswamy ; Jeffery L. Tallon ; Sally Brooker
• 刊名：The Journal of the American Chemical Society
• 出版年：2012
• 出版时间：February 15, 2012
• 年：2012
• 卷：134
• 期：6
• 页码：2892-2894
• 全文大小：269K
• 年卷期：v.134,no.6(February 15, 2012)
• ISSN：1520-5126

文摘

Triply switchable [Co^II(dpzca)₂] shows an abrupt, reversible, and hysteretic spin crossover (T_1/2鈫?= 168 K, T_1/2鈫?= 179 K, and 螖T_1/2 = 11 K) between the high-spin (HS) and low-spin (LS) states of cobalt(II), both of which have been structurally characterized. The spin transition is also reversibly triggered by pressure changes. Moreover, in a third reversible switching mechanism for this complex, the magnetic properties can be switched between HS cobalt(II) and LS cobalt(III) by redox.