Magnetic Exchange via Borane Anions (3c-2e bonds)

本项目的目标是开发和使用新的合成方法来制备具有磁性的分子多自旋系统。我们打算利用顺磁性双八面体金属配合物和共轭聚羧酸共配体来构建具有高自旋基态的多核配合物。组装体的核性将由羧酸官能团的数量控制。磁交换相互作用的类型和大小将通过有机间隔分子的扩展共轭π系统来调节。我们计划建立一系列不同的同源和异型物种（一个图书馆）。这将使我们能够确定聚集体的组成和自旋基态。配合物的化学和物理性质将通过循环伏安法、IR光谱、UV/维斯光谱、X射线晶体学、磁化率测量和高场EPR光谱来表征。

The objective of this project is to develop and use, novel synthetic methods to prepare molecular multispin systems with magnetic properties. We intend to use paramagnetic, bioctahedral metal complexes and conjugated polycarboxylate coligands to construct polynuclear complexes with high-spin ground states. The nuclearity of the assemblies will be controlled by the number of the carboxylate functions. The type and magnitude of the magnetic exchange interactions will be adjusted by the extended conjugated pi-system of the organic spacer molecule. We plan to build a range of various homo- and heterobimetallic species (a library). This will allow us to determine the composition and the spin ground state of the aggregates. The chemical and physical properties of the complexes will be characterized by cyclic voltammetry, IR spectroscopy, UV/Vis spectroscopy, X-ray crystallography, magnetic susceptibility measurements and high-field EPR spectroscopy.