同手性多核配合物及其分子磁性与铁电性质研究

项目名称： 同手性多核配合物及其分子磁性与铁电性质研究

项目编号： No.21371010

项目类型： 面上项目

立项/批准年度： 2014

项目学科： 无机化学

项目作者： 吴大雨

作者单位： 安庆师范学院

项目金额： 40万元

中文摘要： 磁电功能材料的研究，是当今材料科学的前沿领域，蕴含着丰富的化学、材料学、物理学等交叉课题。本项目以手性有机酸为合成单元，包括α-羟基酸、β-羟基酸和α-亚胺酸等，合成手性多齿有机配体；进一步和过渡金属离子，如Mn3+、Fe2＋、Co2＋等第一过渡系金属离子，采用自组装方法构筑同手性多核分子磁性配合物。培养多核配合物单晶，获得结构信息，包括金属离子价态与自旋态，自旋桥连方式，点群和结构对称元素等。根据金属中心的结构特点，测试磁化率数据，指认多核配合物中金属中心的自旋状态，自旋耦合方式；揭示其自旋转变、光诱导磁性、单分子磁体等和多核体系结构相关的磁性能。通过获得晶体的空间群、对称性等结构信息，结合前期的DSC数据，有目的性的测试化合物的铁电性质。将分子自旋和手性结构特征融合于同一多核配合物，研究多核配合物的分子磁化学和铁电性质，实现手性单分子磁体、手性自旋交叉、铁电单分子磁体等多功能分子材料。

中文关键词： 功能配合物；自旋交叉；单分子磁体；；

英文摘要： Nowadays the study of magnetic & electric functional material is becoming one of the frontier fields in the material science, which contains abundant jointing subjects between synthetic chemistry,material and physics. This project will start from the chiral organic acid including α-hyrdocarboxylate,α-iminecarboxylate、β-hydrocarboxylate acid and etc as synthons to obtain chiral multidentate organic ligands, which will further self-assemble with the first-row transition metal ions, such as Mn3+, Fe2+, Co2+ and etc to construct homochiral polynuclear discretely magnetic metal-organic coordination compounds（MOCCs）. Through the growth of single crystals, we can obtain the information on the structure of single crystal including the valence and spin state of metal ions, the bridging mode between spins, point group and symmetry element in structure.In light of the structure characteristic of metal centers, we will measure the magnetic data and point out the spin state and the coupling mode between spins in order to reveal spin crossover, photomagnetism,single molecule magnet and other functions related with polynuclear complexes. Through obtaining the space group of crystals, symmetry and etc and combining those with the previous DSC data, we will on purpose characterize the ferroelectric property. By combining molecul

英文关键词： Functional complex；spin crossover；single molecule magnet；；