| 基于水杨醛类席夫碱构筑的Fe(Ⅲ)、Co(Ⅲ)、混价Mn(Ⅱ))/Mn(Ⅲ)配合物的合成、晶体结构及磁性 | |
| Syntheses, Crystal Structures and Magnetic Properties of Fe(Ⅲ), Co(Ⅲ) and Mixed Valence Mn(Ⅱ)/Mn(Ⅲ) Complexes Based on a Schiff Base Ligand Derived From Salicylaldehyde | |
| 摘要: 以3-甲氧基水杨醛与乙醇胺缩合得到席夫碱化合物hmmpH2（hmmpH2=2-[（2-羟乙基亚氨基）甲基]-6-甲氧基苯酚），以hmmpH2为配体合成了配合物[Fe2（hmmp）2（hmmpH）2]·1.5CH3CN·0.5H2O（1）和[Co2Na（hmmp）2（N3）2（CH3O）（CH3OH）2]（2）。以3，5-二溴水杨醛与乙醇胺缩合得到化合物hmdbrpH2（hmdbrpH2=2-[（2-羟乙基亚氨基）甲基]-4，6-二溴苯酚），以hmdbrpH2为配体合成了一个混价三核配合物[Mn（Ⅱ）Mn（Ⅲ）2（hmdbrp）2（O2CPh）4（CH3OH）2]·2CH3CN·2CH3OH（3）（HO2CPh为苯甲酸）。对配合物分别进行了元素分析、X射线单晶衍射分析，还对1和3进行了磁性研究。单晶结构分析表明配合物1中2个六配位的Fe（Ⅲ）离子通过2个醇羟基氧原子相连形成二聚体结构，配合物2中Co（Ⅲ）也为六配位，通过2个甲醇中氧原子相连形成双核结构，配合物3为一混价三核锰结构，3个Mn离子呈线性排列。磁性测试表明配合物1中Fe（Ⅲ）离子之间存在反铁磁相互作用，配合物3的三核锰单元内Mn（Ⅱ）、Mn（Ⅲ）离子之间存在反铁磁相互作用。 | |
| 关键词: 席夫碱 混价 晶体结构 磁性 | |
| 基金项目: 安徽省高校省级自然科学基金重点项目（No.KJ2015A066）资助。 | |
| Abstract: The Schiff base hmmpH2 (hmmpH2=2-[(2-hydroxyethylimino)methyl]-6-methoxyphenol) was synthesized by o-vanillin and ethanolamine. Complexes[Fe2(hmmp)2(hmmpH)2]·1.5CH3CN·0.5H2O (1) and[Co2Na((hmmp)2(N3)2(CH3O)(CH3OH)2] (2) were synthesized by using hmmpH2 ligand. The Schiff base hmdbrpH2 (hmdbrpH2=2-[(2-hydroxyethylimino)methyl]-4,6-dibromophenol) was synthesized by 3,5-dibromosalicylaldehyde and ethanolamine. Complex[Mn(Ⅱ)Mn(Ⅲ)2(hmdbrp)2(O2CPh)4(CH3OH)2]·2CH3CN·2CH3OH (3) was synthesized by using hmdbrpH2 ligand. These complexes were fully characterized by elemental analysis and X-ray single crystal diffraction, and complexes 1 and 3 were also studied by magnetic investigation. The structural analysis indicates that in complex 1 two six-coordinated Fe(Ⅲ) ions are bridged by two alcoholic hydroxyl atoms to form a dimer structure. In complex 2, Co(Ⅲ) is six-coordinated with an octahedral coordination environment and the two Co(Ⅲ) ions are bridged by two O atoms from CH3OH constructing a binuclear complex. The complex 3 is a mixed valence trinuclear structure, with three Mn ions in linear array. Magnetic study indicates that the antiferromagnetic interaction exist between Fe(Ⅲ) ions in complex 1, and in complex 3 antiferromagnetic interactions exist between the Mn(Ⅱ) and Mn(Ⅲ) ions in the trinuclear manganese unit. | |
| Keywords: Schiff base mixed valence crystal structure magnetic property | |
| 投稿时间：2016-12-12 修订日期：2017-02-27 | |
| 摘要点击次数: 1516 | |
| 全文下载次数: 1068 | |
| 高喜凤,刘敬松,杨培培,刘艳明,张喜琦,祝建华.基于水杨醛类席夫碱构筑的Fe(Ⅲ)、Co(Ⅲ)、混价Mn(Ⅱ))/Mn(Ⅲ)配合物的合成、晶体结构及磁性[J].无机化学学报,2017,33(4):630-636. | |
| 查看全文 查看/发表评论 下载PDF阅读器 | |
| Support information: | |
|
| |
|
| |
|
| |