Magnetic properties of tetrakis[4-(α-diazobenzyl)pyridine]bis(thiocyanato-N)cobalt(II) in frozen solution after irradiation.: Formation of a single-molecule magnet in frozen solution

被引:91
作者
Karasawa, S [1 ]
Zhou, GY [1 ]
Morikawa, H [1 ]
Koga, N [1 ]
机构
[1] Kyushu Univ, Grad Sch Pharmaceut Sci, Higashi Ku, Fukuoka 8128582, Japan
关键词
D O I
10.1021/ja035478s
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Magnetic properties after irradiation of a 1:4 mixture of Co(SCN)2 and 4-(α-diazobenzyl)pyridine in frozen solution were investigated by ac and dc magneto/susceptometry. Observations of the frequency dependence of X'' signals and of a hysteresis loop at 2 K in ac and dc measurements, respectively, indicate that the generated cobalt?carbene complex functions as a single-molecule magnet. This is the first example of a monometallic single-molecule magnet of nanometer size. Copyright © 2003 American Chemical Society.
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页码:13676 / 13677
页数:2
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