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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Magneto-structural correlations in a family of (ReCuII)-Cu-IV chains based on the hexachlororhenate(IV) metalloligand
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Magneto-structural correlations in a family of (ReCuII)-Cu-IV chains based on the hexachlororhenate(IV) metalloligand

机译:基于六氯仑烯酸(IV)Metalloligand的(Recuii)-Cu-IV链系列磁结构相关性

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摘要

Six novel one-dimensional chloro-bridged (ReCuII)-Cu-IV complexes of formula {[Cu(L)(4)][ReCl6]}(n), where L = imidazole (Imi, 1), 1-methylimidazole (Meim, 2), 1-vinylimidazole (Vim, 3), 1-butylimidazole (Buim, 4), 1-vinyl-1,2,4-triazole (Vtri, 5) and N, N'-dimethylformamide (DMF, 6) are characterised structurally, magnetically and theoretically. The structures exhibit significant differences in Cu-Cl bond lengths and Re-Cl-Cu bridging angles, resulting in large differences in the nature and magnitude of magnetic exchange interactions between the Re-IV and Cu-II ions. Theoretical calculations reveal the coupling to be primarily ferromagnetic, increasing in magnitude as the bridging angle becomes smaller and the bond lengths shorten.
机译:六种新型一维氯联合(Recuii)-Cu-IV配合物的式{[Cu(1)(4)] [RECL6]}(N),其中L =咪唑(IMI,1),1-甲基咪唑( Meim,2),1-乙烯基咪唑(Vim,3),1-丁基咪唑(BUIM,4),1-乙烯基-1,2,4-三唑(VTRI,5)和N,N'-二甲基甲酰胺(DMF,6 )在结构上,磁性和理论上的特征在于。 该结构表现出Cu-C1键长度和再Cl-Cu桥接角度的显着差异,导致Re-IV和Cu-II离子之间的磁交换相互作用的性质和大小差异很大。 理论计算揭示了主要是铁磁性的耦合,随着桥接角变小而幅度的幅度增加,并且键合长度缩短。

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