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

作　　者：刘杨[1] 王振平[1] 王庆伦[2] 仝玉章 杨春[1] LIU Yang;WANG Zhen-Ping;WANG Qing-Lun;TONG Yu-Zhang;YANG Chun(School of Chemical Engineering and Technology,Hebei University of Technology,Tianjin 300130,China;Department of Chemistry,Nankai University,Tianjin 300071,China)

机构地区：[1]河北工业大学化工学院,天津300130 [2]南开大学化学学院,天津300071

出　　处：《无机化学学报》2018年第8期1448-1454,共7页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No.21771111,21601092,21371104); 河北省自然科学基金(No.B2016202280)资助项目

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(Me_2valpn)Dy(DMF)_2(H_2O)Fe(CN)_6]·1.5H_2O·0.5CH_3OH}n(1)和{[Cu(Me_2valpn)Tb(DMF)_2(H_2O)Fe(CN)_6]·H_2O·CH_3OH}n(2)(H_2Me_2valpn=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(Me_2valpn)Ln(DMF)_2(H_2O)]_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。Two novel heterotrimetallic 1 D zigzag chain coordination polymers, {[Cu（Me2 valpn）Dy（DMF）2（H2 O）Fe（CN）6]·1.5 H2 O·0.5 CH3 OH}n（1） and {[Cu（Me2 valpn） Tb（DMF）2（H2 O）Fe（CN）6]·H2 O·CH3 OH}n（2）（H2 Me2 valpn=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（Me2 valpn）]Ln（DMF）2（H2O）]3＋fragments in a cis-mode. Accordingly, there are two types of bent bridging linkages（Fe-C≡N-Cu and FeC≡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. CCDC：1815462, 1;1815483, 2.

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 

分 类 号：O614.121[理学—无机化学] O614.811[理学—化学]