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Substituent groups from aromatic dicarboxylates modulated structural diversification in the assembly of Co(Ⅱ)complexes based on the bis-pyridyl-bis-amide ligands

查看全文 作　　者：WANG [1]XiuLi;MU [1]Bao;LIN [1]HongYan;YANG [1]Song;LIU [1]GuoCheng;TIAN [1]AiXiang;ZHANG [1]JuWen 高影响力作者 机构地区：[1]Department of Chemistry, Bohai University高影响力机构 出　　处：《Science China Chemistry》索引2013年第56卷第5期,共10页高影响力期刊 基　　金：supported by the Program for New Century Excellent Talents in University (NCET-09-0853);the National Natural Science Foundation of China (20871022, 21171025);the Natural Science Foundation of Liaoning Province (201102003) 摘　　要：Four coordination polymers based on two bis-pyridyl-bis-amide ligands and three aromatic dicarboxylates with different substituent groups, namely, [Co(3-bpcb) 1.5 (NPH)(H2O)]·4H2O (1), [Co(3-bpcb)(NIPH)] (2), [Co(3-bpcb)0.5 (5-H2 AIP)]·2H2O (3), [Co(3-bpcd) 0.5 (5-H2 AIP)(H2O)]·2H2O (4) [3-bpcb = N,N′-bis(3-pyridinecarboxamide)-1,4-benzene, 3-bpcd = N,N′-bis(3- pyridine)cyclohexane-1,4-dicarboxamide, H2 NPH = 3-nitrophthalic acid, H2 NIPH = 5-nitroisophthalic acid, 5-H4 AIP = 5-aminoisophthalic acid] have been synthetized under hydrothermal conditions. Complex 1 displays a one dimensional (1D) chain based on the binuclear [Co2 (NPH)2 ] units and 3-bpcb ligands, which is extended into a three dimensional (3D) supramolecular framework through hydrogen bonding and - stacking interactions. In complex 2, the (3,5)-connected two dimensional (2D) layers are constructed from 1D Co-NIPH chains and bidentate-bridging 3-bpcb ligands. Complex 3 is a 2D double layer based on Co-5-H2 AIP 2D layers and 3-bpcb pillars. Complex 4 also displays a 2D network, which is constructed from the Co-5-H2AIP 1D double chains and 3-bpcd ligands. Finally, complexes 2-4 are extended into 3D supramolecular frameworks by hydrogen bonding or - stacking interactions. The substituent groups of dicarboxylates play an important role in the assembly and structures of the title complexes. In addition, the fluorescent properties of complexes 1-4 and the electrochemical behaviors of 3 and 4 at room temperature have been investigated. 关 键 词：调制结构 配合物 羧酸盐 吡啶基 取代基 双酰胺 配体 多样化
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