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Heterobimetallic complexes from 0D clusters to 3D networks based on various polycyanometallates and [Cu(dmpn)2]2+ (dmpn = 2,2-dimethyl-1,3-diaminopropane): synthesis, crystal structures and magnetic properties
CrystEngComm ( IF 2.6 ) Pub Date : 2020-03-20 , DOI: 10.1039/d0ce00235f
Xiaoyun Hao 1, 2, 3, 4 , Jingwen Shi 1, 2, 3, 4 , Yong Dou 1, 2, 3, 4 , Tong Cao 1, 2, 3, 4 , Zhen Zhou 1, 2, 3, 4 , Lu Yang 1, 2, 3, 4 , Dacheng Li 5, 6, 7, 8 , Qingyun Liu 4, 9, 10, 11 , Jianzhuang Jiang 8, 12, 13, 14 , Daopeng Zhang 1, 2, 3, 4
Affiliation  

Six novel heterobimetallic cyanide-bridged complexes formulated as {[Cu(dmpn)2]2[Fe(bpb)(CN)2]}[Fe(bpb)(CN)2](ClO4)2·2H2O (1), [Cu(dmpn)2][Fe(bbp)(CN)3]n·0.5nDMF·2.5nH2O (2), {[Cu(dmpn)2]1.5[Cr(CN)5(NO)]}n·3nH2O (3), {[Cu(dmpn)2]2[Fe(CN)6]}n·10nH2O (4), {[Cu(dmpn)2]4[Mo(CN)8]2}·CH3CN·2H2O (5), and {[Cu(dmpn)2]4[W(CN)8]2}·CH3CN·2H2O (6) (bpb = 1,2-bis(pyridine-2-carboxamido)benzenate, bbp = 2,6-bis(benzimidazoi-2-yl)pyridine, dmpn = 2,2-dimethyl-1,3-diaminopropane, DMF = N,N-dimethylformamide) were synthesized with one amine copper compound as an assembly segment and six polycyanometallates containing two, three, five, six or eight cyanide groups as building blocks. All of the six complexes have been characterized using elemental analysis, IR spectra, and powder and single crystal X-ray diffraction. Structural analysis revealed diverse structural types of complexes 1–6, ranging from discrete polynuclear entities (1) to a 1D single chain (2) to 2D (3, 5 and 6) and 3D (4) networks, clearly indicating the important role of the building block in tuning the structures of the target complexes. The magnetic properties of the reported cyanide-bridged complexes have been experimentally studied and theoretically simulated, disclosing ferro- or antiferromagnetic coupling between the low spin Fe(III) ion and Cu(II) ion and the antiferromagnetic interaction between the Cr(I) ion and the Cu(II) ion through the cyanide bridge. Furthermore, the nature of the magnetic coupling has been analysed based on the magneto-structural correlation.

中文翻译:

基于各种多金属氰化物和[Cu(dmpn)2] 2+(dmpn = 2,2-二甲基-1,3-二氨基丙烷)的从0D簇到3D网络的异双金属配合物:合成,晶体结构和磁性

六个新颖的异双金属氰化物桥联络合物,配制成{[Cu(dmpn)2 ] 2 [Fe(bpb)(CN)2 ]} [Fe(bpb)(CN)2 ](ClO 42 ·2H 2 O(1),[Cu(dmpn)2 ] [Fe(bbp)(CN)3 ] n ·0.5 n DMF·2.5 n H 2 O(2),{[Cu(dmpn)2 ] 1.5 [Cr(CN)5( NO)]} n ·3 n H 2 O(3),{[Cu(dmpn)2 ] 2[Fe(CN)6 ]} n ·10 n H 2 O(4),{[Cu(dmpn)2 ] 4 [Mo(CN)8 ] 2 }·CH 3 CN·2H 2 O(5),和{[Cu(dmpn)2 ] 4 [W(CN)8 ] 2 }·CH 3 CN·2H 2 O(6)(bpb = 1,2-双(吡啶-2-甲酰胺基)苯甲酸酯,bbp = 2, 6-双(苯并咪唑基-2-基)吡啶,dmpn = 2,2-二甲基-1,3-二氨基丙烷,DMF = NN-二甲基甲酰胺)以一种胺铜化合物作为组装链段和六种含有两个,三个,五个,六个或八个氰化物基团的多氰基金属酸酯合成。使用元素分析,红外光谱以及粉末和单晶X射线衍射对所有六个络合物进行了表征。结构分析显示多样结构类型配合物的1-6,从离散的多核实体(1),以一维单链(2)至2D(356)和三维(4)网络,清楚地表明了构建基块在调整目标复合物的结构中的重要作用。已通过实验研究和理论模拟了报告的氰化物桥联配合物的磁性,揭示了低自旋Fe(III)离子和Cu(II)离子之间的铁或反铁磁耦合以及Cr(I)离子之间的反铁磁相互作用和Cu(II)离子通过氰化物桥。此外,已经基于磁结构相关性分析了磁耦合的性质。
更新日期:2020-03-20
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