| 以4,4'-联苯二甲酸和咪唑基化合物为配体的钴配合物的合成和晶体结构 |
| Syntheses and Crystal Structures of Two Cobalt(Ⅱ) Coordination Polymers Constructedfrom 4, 4'-Biphenyldicarboxylate and Bis(imidazole) Ligands |
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| 摘要: 以4,4'-联苯二甲酸(H2BPDC)和4,4'-二咪唑基二苯醚(BIDPE)为原料,与硝酸钴在不同温度下反应,得到2个结构不同的配位聚合物{[Co2(BPDC)2(BIDPE)2(H2O)]·2H2O}n(1)和{[Co(BPDC)(BIDPE)]·H2O}n(2)。对它们进行了元素分析、红外光谱分析,并利用X射线衍射测定了它们的单晶结构。配合物1属于单斜晶系,C2/c空间群,a=1.45602(15)nm,b=1.55751(16)nm,c=2.5226(3)nm,β=90.8340(10)°,V=5.7202(10)nm3,Z=4,Mr=1256.98,Dc=1.460 g·cm-3,μ=0.655,F(000)=2592,R1=0.0367,ωR2=0.0875(I>2σ(I))。配合物2属于三斜晶系,P1空间群,a=1.06192(10)nm,b=1.09851(11)nm,c=1.32451(13)nm,α=112.7250(10)nm,β=92.1120(10)°,γ=96.5740(10)°,V=1.4102(2)nm3,Z=2,Mr=619.48,Dc=1.459 g·cm-3,μ=0.662,F(000)=638,R1=0.0474,ωR2=0.1165(I>2σ(I))。单晶结构分析显示,配合物1拥有一维链状结构,而配合物2具有二维两重贯穿结构,并表现出聚轮烷的结构特征。结果说明了反应温度在配合物组装过程中起着非常重要的作用。 |
| 关键词: 钴配合物 双咪唑配体 芳香羧酸配体 晶体结构 |
| 基金项目: 国家自然科学基金(No.21271106)和教育部科学技术重点项目(No.210102)资助。 |
| Abstract: Two cobalt(Ⅱ) coordination polymers, {[Co2(BPDC)2(BIDPE)2(H2O)]·2H2O}n(1) and {[Co(BPDC)(BIDPE)]·H2O}n(2)(H2BPDC=4, 4'-biphenyldicarboxylic acid and BIDPE=4, 4'-bis(imidazole-l-yl) diphenyl ether), have been synthesized and characterized by IR spectroscopy, elemental analyses and single-crystal X-ray diffraction.Complex 1 crystallizes in monoclinic, space group C2/c with a=1.45602(15) nm, b=1.55751(16) nm, c=2.5226(3) nm, β=90.8340(10)°, V=5.7202(10) nm3, Mr=1256.98, Dc=1.460 g·cm-3, F(000)=2592, μ=0.655 mm-1 and Z=4.The final R1 is 0.0367 and ωR2 is 0.0875 for 4258 observed reflections(I> 2σ(I)).Complex 2 belongs to triclinic, space group P1 with a=1.06192(10) nm, b=1.09851(11) nm, c=1.32451(13) nm, α=112.7250(10)°, β=92.1120(10)°, γ=96.5740(10)°, V=1.4102(2) nm3, Mr=619.48, Dc=1.459 g·cm-3, F(000)=638, μ=0.662 mm-1 and Z=2.The final R1 is 0.0474 and ωR2 is 0.1165 for 3871 observed reflections(I>2σ(I)). Structural analyses reveal that complex 1 features a one-dimensional chain structure based on triply bridged binuclear units, which is further interlinked into a higher-dimensional supramolecular framework by intermolecular weak interactions, whereas complex 2 possesses a 2-fold parallel interpenetrating network consist of two identical sets of 2D layer motifs and shows polycatenane characters.The results show that reaction temperature plays a significant role in the structure of the final products.CCDC:1429769 1; 1429770, 2. |
| Keywords: cobalt coordination polymer bis(imidazole) ligands polycarboxylate crystal structure |
| 投稿时间：2015-10-26 修订日期：2016-01-18 |
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| 张凤,刘光祥.以4,4'-联苯二甲酸和咪唑基化合物为配体的钴配合物的合成和晶体结构[J].无机化学学报,2016,32(4):683-690. |
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