| 两个一维之字链异三金属配位聚合物的合成、结构和磁性 |
| Syntheses, Crystal Structures and Magnetic Properties of Two One-Dimensional Heterotrimetallic Coordination Polymers |
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| 摘要: 用分步合成法得到了2个结构新颖的一维之字链异三金属配位聚合物{[Cu（Me2valpn）Dy（DMF）2（H2O）Fe（CN）6]·1.5H2O·0.5CH3OH}n（1）和{[Cu（Me2valpn）Tb（DMF）2（H2O）Fe（CN）6]·H2O·CH3OH}n（2）（H2Me2valpn=N，N'-双（3-甲氧基-水杨醛）缩-2，2-二甲基-1，3-丙二胺）。X射线单晶衍射分析表明每个[Fe（CN）6]3-用顺式的2个氰根分别连接2个相邻构筑单元[Cu（Me2valpn）Ln（DMF）2（H2O）]3+的Cu（II）和Ln（III）。除了Cu（II）和Ln（III）之间的双酚氧桥之外，链中还包含Fe-C≡N-Cu和Fe-C≡N-Ln两类弯曲的桥联结构。配合物1在9.5~300 K的直流变温磁化率数据符合居里-韦斯定律，韦斯常数（θ）为13.17 K，表明配合物1总体上表现铁磁相互作用。交流磁化率测试表明配合物1没有表现出缓慢磁弛豫现象。 |
| 关键词: 隔室席夫碱 异三金属配合物 配位聚合物 晶体结构 磁性 |
| 基金项目: 国家自然科学基金（No.21771111，21601092，21371104）和河北省自然科学基金（No.B2016202280）资助项目。 |
| Abstract: Two novel heterotrimetallic 1D zigzag chain coordination polymers, {[Cu(Me2valpn)Dy(DMF)2(H2O)Fe(CN)6]·1.5H2O·0.5CH3OH}n (1) and {[Cu(Me2valpn) Tb(DMF)2(H2O)Fe(CN)6]·H2O·CH3OH}n (2) (H2Me2valpn=N,N'-bis(3-methoxysalicylidene)-2,2-dimethyl-1,3-diaminopropane), were prepared by stepwise synthetic approach. Single -crystal X-ray diffraction analysis revealed that each[Fe(CN)6]3- is connected with two[Cu(Me2valpn)]Ln(DMF)2(H2O)]3+ fragments in a cis-mode. Accordingly, there are two types of bent bridging linkages (Fe-C≡N-Cu and Fe-C≡N-Ln) in the chain besides the diphenoxo bridges between Cu(II) and Ln(III). In the temperature range of 9.5~300 K, the dc magnetic susceptibilities of complex 1 are consistent with the Curie-Weiss law and give positive Curie-Weiss constants (θ=13.17 K), indicating the presence of predominant ferromagnetic interactions. The AC magnetic measurements reveal that complex 1 shows no slow magnetization relaxation. |
| Keywords: compartmental Schiff base heterotrimetallic complex coordination polymer crystal structure magnetic property |
| 投稿时间：2018-02-09 修订日期：2018-05-11 |
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| 刘杨,王振平,王庆伦,仝玉章,杨春.两个一维之字链异三金属配位聚合物的合成、结构和磁性[J].无机化学学报,2018,34(8):1448-1454. |
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