高核稀土、稀土-过渡金属簇合物的设计合成及其磁热效应研究

由于环境友好及其能量高效，磁制冷本人为是代替传统制冷最具发展前景的技术。在本申请中，申请人拟利用含氮多羧酸配体原位分解产生的阴离子或难溶盐解离产生的阴离子作模板，分别采用乙酸、甲酸、草酸、碳酸配体与稀土离子作用，合成系列高核稀土、稀土-过渡金属离子簇合物；通过系统地研究其磁制冷效应和导热性能，探讨化合物结构与性能关系。申请人希望：1) 通过合成系列高核稀土、稀土-过渡金属离子簇合物，揭示其形成规律。2) 通过系统地研究系列高核稀土、稀土-过渡金属离子簇合物性能，揭示其结构与性能间的定量关系与规律。3) 在理解高核稀土、稀土-过渡金属离子簇合物结构与性能间的定量关系与规律的基础上，结合理论计算，设计合成具有优良磁制冷性能的高核稀土、稀土-过渡金属离子簇合物。因此，该课题研究，对于开发性能优良的磁制冷试剂，拓宽稀土应用具有重要意义。

Owing to environmental friend and energy efficiency, magnetic refrigeration is regarded as most promising technology to replace traditional refrigeration. In this proposal, we are going to synthesize a series of high-nucleaity lanthanide or lanthanide-transition metal clusters respectively through the reaction of acetate, formate, oxalate or carbonate and lanthanide or lanthanide-transition metal ions based on the template-anions generted in situ from the decompsiton of N-containing multi-carboxylate ligands or from dissociation of insoluble salts. We hope to 1) reveal the formation rule of the high-nuclearity lanthanide or lanthanide-transition metal clusters based on the synthsis of a series the high-nuclearity lanthanide or lanthanide-transition metal clusters; 2) reveal the relationship bettwen the structures of the high-nuclearity lanthanide or lanthanide-transition metal clusters and their prperties based on systemic investigation on the magneitc properties and thermal conductivity of these compound; 3) design and synthesize the high-nuclearity lanthanide or lanthanide-transition metal clusters with excellent magnetocaloric effect and thermal conductivity based on the relationship between the structures of the compounds and their magneitc properties and thermal conductivity. Thus, present proposal will be of key importace for us to develop excellent magnetic refrigeration reagents and expand the application of lanthanide materials as well.