权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Development of Multi-functional Ligands for Application of Metal Complexes

金属配合物应用多功能配体的开发

基本信息

批准号：
03650687
负责人：
SATO Mitsunobu
金额：
$ 1.09万
依托单位：
Kogakuin University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1991
资助国家：
日本
起止时间：
1991 至 1992
项目状态：
已结题

项目摘要

1. The acylation of a Co(III)-DHPTA mononuclear complex have been examined in order to obtain oligomers or polymers in which an octahedral complex are as the side chain, where DHPTA represents 1,3-diamino-2-hydroxypropane-N,N,N',N'-tetraacetic acid. The non-coordinated hydroxyl group in the complex was successfully methacrylated by the reaction of the corresponding acid anhydride with the complex in aprotic solvent, only in the presence of a cryptand. In the presence of a polymerization inhibitor, one methacryl group which can be polymerized, was introduced. On the other hand, the products, which may be formed by sequential polymerization after the acylation, from the methacrylation of the complex without polymerization inhibitor, gave a hydro-gel. This result indicates that the multi-ligand oligomer or polymer is obtained in the chemical modification. We are now examininig the possibility to obtain films of ceramics by the use of hydro-gel obtained here, as an application.2. Removal of Nitrogen oxides in atmosphere is an important subject, not only for chemistry. In this project, we have investigated the coordination behaviors of nitrite ion toward iron(III) in the presence of the above multi-functional ligand, DHPTA. We found the formation of mu -oxo tetranuclear Fe(III) complex ion involving two bridging nitrite ions, from the X-ray crystal structure determination of an isolated green compound Significantly, the multinuclear complex was discovered from an acidic aqueous solution, pH below 2.5. This result suggests that the reaction system consisted of iron(III) and DHPTA may afford an opportunity for capture of nitrogen oxides from serious acid rain and their removal. Moreover, the novel tetranuclear complex are interested in both fields of biochemistry and magnetochemistry.

1. 研究了 Co(III)-DHPTA 单核配合物的酰化，以获得以八面体配合物作为侧链的低聚物或聚合物，其中 DHPTA 代表 1,3-二氨基-2-羟基丙烷-N,N,N',N'-四乙酸。仅在穴状配体存在下，通过相应的酸酐与配合物在非质子溶剂中反应，配合物中的非配位羟基成功地甲基丙烯酸酯化。在阻聚剂存在下，引入一个可聚合的甲基丙烯酰基。另一方面，可以在酰化后通过顺序聚合形成的产物，其由不含聚合抑制剂的络合物的甲基丙烯酸化形成，得到水凝胶。该结果表明在化学修饰中获得了多配位体低聚物或聚合物。我们现在正在研究通过使用此处获得的水凝胶来获得陶瓷薄膜的可能性，作为一种应用。2。去除大气中的氮氧化物是一个重要的课题，不仅对于化学而言。在本项目中，我们研究了在上述多功能配体DHPTA存在下亚硝酸根离子与铁(III)的配位行为。通过对分离的绿色化合物的 X 射线晶体结构测定，我们发现涉及两个桥联亚硝酸根离子的 mu-氧四核 Fe(III) 络合物离子的形成。值得注意的是，该多核络合物是在 pH 低于 2.5 的酸性水溶液中发现的。这一结果表明，由铁(III)和DHPTA组成的反应体系可能为从严重酸雨中捕获氮氧化物并去除它们提供了机会。此外，新型四核配合物在生物化学和磁化学领域都引起了人们的兴趣。