Magnetic properties of tetrakis[4-(alpha-diazobenzyl)pyridine]bis(thiocyanato-N)cobalt(II) in frozen solution after irradiation. Formation of a single-molecule magnet in frozen solution.
Magnetic properties after irradiation of a 1:4 mixture of Co(SCN)2 and 4-(alpha-diazobenzyl)pyridine in frozen solution were investigated by ac and dc magneto/susceptometry. Observations of the frequency dependence of chi'' 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.
Graduate School of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan.
Satoru
S
Karasawa
Guangyuan
G
Zhou
Hiroshi
H
Morikawa
Noboru
N
Koga