Through-bond magnetic interaction between the 2p spin of the aminoxyl radical and the 3d spin of the metal ions in the complexes of bis(hexafluoroacetylacetonato)-manganese(II) and -copper(II) with 4-(N-tert-butyl-N-oxylamino)-2,2′-bipyridine
Through-bond magnetic interaction between the 2p spin of the aminoxyl radical and the 3d spin of the metal ions in the complexes of bis(hexafluoroacetylacetonato)-manganese(II) and -copper(II) with 4-(N-tert-butyl-N-oxylamino)-2,2′-bipyridine
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DOI：
10.1039/a909564k
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发表时间：
2000
期刊：
影响因子：
--
通讯作者：
Harumi Kumada;A. Sakane;N. Koga;H. Iwamura
中科院分区：
文献类型：
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作者：
Harumi Kumada;A. Sakane;N. Koga;H. Iwamura
用X-射线单晶分析研究了双（六氟乙酰丙酮）锰（Ⅱ）、铜（Ⅱ）和锌（Ⅱ）与4-（N-叔丁基氨氧基）-2，2 ′-联吡啶的1∶1配合物的晶体和分子结构。在SQUID磁力计上测量的磁性显示，锰（II）和铜（II）离子通过联吡啶环与远程氨氧基自由基反铁磁和铁磁耦合，分别为J/kB = −20.2和+68.7 K。
The crystal and molecular structures of 1∶1 complexes of bis(hexafluoroacetylacetonato)-manganese(II), -copper(II) and -zinc(II) with 4-(N-tert-butylaminoxyl)-2,2′-bipyridine were studied by X-ray single crystal analyses to show their mononuclear structures in which the bipyridine moieties are coordinated with the metal ions in a cis configuration and the aminoxyl groups do not take part in the coordination. Their magnetic properties measured on a SQUID susceptometer/magnetometer revealed that the manganese(II) and copper(II) ions couple with the remote aminoxyl radical through the bipyridine ring antiferro- and ferro-magnetically by J/kB = −20.2 and +68.7 K, respectively.