Abstract

Metal tris-o-dioxolene (o-quinone, o-semiquinone, and catecholate) complexes represent an interesting and vivid model system for the demonstration of a relationship between the structure and magnetic properties when considering a series of objects of the same type. After publishing the reviews [1, 2], the metal tris-o-dioxolene complexes containing the symmetric 3,6-di-tert-butyl-o-benzoquinone derivatives with substituents in positions 4 and 5 are described in a number of works. In addition, some earlier unpublished structures of the complexes of this type are reviewed. The substituents in the lateral chains enhance the steric protection of the metal center and, as a consequence, result in the formation of coordination polyhedra uncharacteristic of the tris(dioxolene) complexes, such as a trigonal prism. In turn, the distortion of the structure affects the magnetic properties of the complexes. Only the complexes with the derivatives of sterically hindered o-quinones, 3,5- and 3,6-di-tert-butyl-o-benzoquinones, are considered in the present review. On the one hand, bulky tert-butyl groups prevent the formation of direct intermolecular contacts and, on the other hand, prevent organic reactions to occur at the benzoquinone cycle.

中文翻译：

---

均聚物Tris-邻-二氧戊烯配合物。特殊的分子结构和磁性

摘要

金属三邻二氧戊烯（邻醌，邻半醌和邻苯二酚）配合物代表了一个有趣而生动的模型系统，用于在考虑一系列相同类型的物体时证明其结构与磁性能之间的关系。发表评论[1，2]后，包含对称的3,6-二叔丁基-邻-氧-的金属三邻-二氧戊烯配合物在许多著作中描述了在4和5位具有取代基的苯醌衍生物。此外，审查了这种复合物的一些较早未公开的结构。侧链中的取代基增强了对金属中心的空间保护，结果导致形成了三（二氧杂环戊烯）配合物（例如三角棱柱）的配位多面体非特征。反过来，结构的变形会影响复合物的磁性。只有具有的空间位的衍生物的配合物阻邻醌，3,5-和3,6-二-叔丁基-邻-苯醌，在本审查考虑。一方面，笨重的叔叔丁基防止形成直接的分子间接触，另一方面，防止在苯醌循环中发生有机反应。