N. A. Artiukhova, E. V. Tretyakov, K. A. Smirnova, G. A. Letyagin, G. V. Romanenko, A. S. Bogomyakov
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引用次数: 0
Abstract
A dichlorophenyl substituted nitronyl nitroxide radical 2-(2,6-dichlorophenyl)-4,4,5,5-tetramethyl-4,5-dihydro-1H-imidazole-3-oxide-1-oxyl (L) is prepared, its structure and magnetic properties are studied. It is shown that the interaction of bis(hexafluoroacetylacetonato)copper(II) [Cu(hfac)2] with L leads to the formation of the {[Cu(hfac)2][Cu(hfac)2L2]} heterospin complex whose crystal structure consists of pseudo-polymer chains formed by alternating single-spin [Cu(hfac)2] and three-spin [Cu(hfac)2L2] fragments. It is established that the temperature dependence of magnetic susceptibility of {[Cu(hfac)2][Cu(hfac)2L2]} is determined by ferromagnetic exchange interactions between unpaired electrons of Cu(II) ions and the axially coordinated L in three-spin fragments.
制备了被二氯苯基取代的硝基亚硝基 2-(2,6-二氯苯基)-4,4,5,5-四甲基-4,5-二氢-1H-咪唑-3-氧化物-1-氧自由基（L），并对其结构和磁性能进行了研究。研究表明，双（六氟乙酰丙酮）铜（II）[Cu(hfac)2] 与 L 的相互作用会形成{[Cu(hfac)2][Cu(hfac)2L2]}异质旋配合物，其晶体结构由单自旋[Cu(hfac)2]和三自旋[Cu(hfac)2L2]片段交替形成的假聚合物链组成。研究证实，{[Cu(hfac)2][Cu(hfac)2L2]}磁感应强度的温度依赖性是由 Cu(II)离子的未成对电子与三自旋片段中轴向配位的 L 之间的铁磁交换相互作用决定的。
期刊介绍：
Journal is an interdisciplinary publication covering all aspects of structural chemistry, including the theory of molecular structure and chemical bond; the use of physical methods to study the electronic and spatial structure of chemical species; structural features of liquids, solutions, surfaces, supramolecular systems, nano- and solid materials; and the crystal structure of solids.
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