A series of trinuclear Cu(II)Ln(III)Cu(II) complexes derived from 2,6-Di(acetoacetyl)pyridine: synthesis, structure, and magnetism.
A series of trinuclear Cu(II)Ln(III)Cu(II) complexes derived from 2,6-Di(acetoacetyl)pyridine: synthesis, structure, and magnetism.
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DOI：
10.1021/ic034998l
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发表时间：
2004
影响因子：
4.6
通讯作者：
Takuya Shiga;M. Ohba;H. Ōkawa
中科院分区：
文献类型：
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作者：
Takuya Shiga;M. Ohba;H. Ōkawa
以2，6-二(乙酰乙酰基)吡啶为桥联配体，在甲醇中与铜(NO(3))(2)、3 H(2)O、Ln(NO(3))(3)、nH(2)O一锅法合成了一系列三核铜(II)Ln(III)Cu(II)配合物。X-射线晶体结构研究表明，两个L(2)(-)配体选择性地将两个铜(II)离子与1，3-二酮基实体和一个Ln(III)离子与2，6-乙酰基吡啶(2，6-乙酰基吡啶)实体包裹在一起，形成一个由烯醇氧原子桥联的三核CuLnCu核。研究了配合物的冷磁性质与Ln离子电子结构的关系。
A series of trinuclear Cu(II)Ln(III)Cu(II) complexes with the bridging ligand 2,6-di(acetoacetyl)pyridine have been prepared by one-pot reaction with Cu(NO(3))(2).3H(2)O and Ln(NO(3))(3).nH(2)O in methanol. X-ray crystallographic studies for all the complexes indicate that two L(2)(-) ligands selectively sandwich two Cu(II) ions with the 1,3-diketonate entities and one Ln(III) ion with the 2,6-acetylpyridine entity to form a trinuclear CuLnCu core bridged by the enolate oxygen atoms. Cryomagnetic properties of the complexes are studied with respect to the electronic structure of the Ln ion.