Hierarchical, Lithium‐Templated Assembly of Helicate‐Type Complexes: How Versatile Is This Reaction?
作者:Markus Albrecht、Marcel Fiege、Miriam Baumert、Marita de Groot、Roland Fröhlich、Luca Russo、Kari Rissanen
DOI:10.1002/ejic.200600852
日期:2007.2
complexes[Li3(2a,b)6M2]+ with cobalt(II), nickel(II), or zinc(II). A prerequisite for the formation of the lithium-bridged dimers is a negative charge of the mononuclear complexes, which are able to electrostatically attract the lithium cations and thus compensate the repulsion between the cations. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)
在 3 位 (1a–c-H2) 上带有诸如酯或醛等羰基官能团的邻苯二酚配体与钛 (IV) 和相应的化合物形成三链螺旋型复合物 [Li3(1a–c)6Ti2]–双链化合物 [Li2(1a-c)4B2] 与硼 (III) 在分级锂模板化过程中。相关的 8-羟基喹啉配体 2a,bH 可用于形成类似的复合物 [Li3(2a,b)6M2]+ 与钴 (II)、镍 (II) 或锌 (II)。形成锂桥二聚体的先决条件是单核复合物带负电荷,它能够静电吸引锂阳离子,从而补偿阳离子之间的排斥力。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)