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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Ferro- and antiferromagnetic coupling in a chlorido-bridged, tetranuclear Cu(_(_(_(II)))) complex?
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Ferro- and antiferromagnetic coupling in a chlorido-bridged, tetranuclear Cu(_(_(_(II)))) complex?

机译:氯桥联四核Cu(_(_(_(II))))络合物中的铁磁和反铁磁耦合?

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摘要

A bispidine-like ligand involving four pyridine-N and three aliphatic- N donor atoms forms a bimetallic species with CuCl_2 in which all seven N-donors are bound and which aggregates in the crystal through double chloride-bridging to give a tetranuclear unit. The magnetism of this solid can be interpreted in terms of a relatively weak antiferromagnetic coupling between the two Cu(_(_(_(II)))) centres of the dinuclear subunits and a strong ferromagnetic coupling of the Cu(_(_(_(II)))) centres in different dinuclear units involved in the bis-chlorido bridge. In solution, the assembly decays into the dinuclear subunits and, in agreement with the solid state studies, the interaction between the corresponding Cu~(_(_(II))) centres is shown to be primarily due to dipole-dipole coupling.
机译:包含四个吡啶-N和三个脂肪族-N供体原子的双吡啶样配体与CuCl_2形成双金属物种,其中所有七个N供体均键合,并通过双氯化物桥连形成四核单元,从而在晶体中聚集。可以用双核亚基的两个Cu(_(_(_(II())))中心之间相对弱的反铁磁耦合和Cu(_(_( _(II))))的中心位于参与双氯桥的不同双核单元中。在溶液中,组装体分解为双核亚基,并且与固态研究一致,相应的Cu〜(_(_(II)))中心之间的相互作用被证明主要是由于偶极-偶极耦合。

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