Magnetic properties after irradiation of tetrakis[4-(α-diazobenzyl)pyridine] copper(II) in a frozen solution

H. Morikawa, S. Karasawa, Noboru Koga

研究成果: ジャーナルへの寄稿学術誌査読

7 被引用数 (Scopus)

抄録

The molecular structure of tetrakis[4-(α-diazobenzyl)pyridine]copper(II) bis(hexafluorophosphate) was revealed by X-ray structure analysis. The magnetic properties after irradiation of a 1:4 mixture of Cu(NO3)2 and 4-(α-diazobenzyl)pyridine in frozen ethanol solutions were investigated by electron paramagnetic resonance (EPR) spectrometry and magneto/susceptometry. In a randomly oriented X-band EPR spectrum, new signals appeared in the field range of 0-500 mT at the expense of the signals due to the isolated copper(II) after irradiation. All signal intensities gradually decreased on warming and new signals disappeared over 60 K. The field dependence of difference magnetization M at 2 and 5 K was measured under a condition similar to that for the EPR experiment. Fitting experiments to M vs. H/T plots by use of theoretical equations for two components suggested that a mixture of high-spin species with S = 9/2 and 7/2 in a ratio of 0.18:0.82 formed under a frozen condition.

本文言語英語
ページ(範囲)507-515
ページ数9
ジャーナルApplied Magnetic Resonance
23
3-4
DOI
出版ステータス出版済み - 2003

!!!All Science Journal Classification (ASJC) codes

  • 原子分子物理学および光学

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