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| 1 | Synthesis and Structure of a Mn(Ⅱ)-triazolyl Coordination Polymer Consisting of Dinuclear Units显示文摘The reaction of bis(1,2,4-triazolyl-4-yl) (btr) and MnClO4·6H2O gave rise to a Mn(Ⅱ) complex comprised of unprecedented dinuclear Mn(Ⅱ) units, {[Mn2(btr)3(H2O)5]-(ClO4)4(H2O)2]n(1). Single-crystal X-ray diffraction analysis revealed that 1 crystallizes in the monoclinic space group C2/c. btr adopts two types of bridging modes. One serves as a μ-N1:N2 bridge through one triazolyl ring of btr forming a dinuclear Mn(Ⅱ) unit, and the other adopts an exo-bidentate mode using two nitrogen atoms from each triazolyl ring and links the dinuclear units into a 2D cationic layer. ClO4- acts as a counter anion and does not take part in coordination. Interestingly, 2D layers are packed in an ABCABC mode. ClO4- and uncoordinated water molecules locate between the adjacent layers, and extensive hydrogen bonds further stabilize the whole framework. | 吴涛 许红岩 孔凡振 郁章玉 王瑞虎 | 2012 | Chinese Journal of Structural Chemistry2012，31，11： | 4 |
| 2 | Two Cadmium(II) Coordination Polymers from Flexible Bis(imidazolyl) Ligands显示文摘The hydrothermal reaction of 1,4-bis(imidazol-1-yl)butane (bimb) and 1,4-bis(2- methylimidazol-1′-yl)butane (bmib) with CdBr2-4H2O gave rise to two coordination polymers, [Cd(bimb)2Br2]n (1) and [Cd(bmib)Br2]n (2), respectively. Single-crystal X-ray diffraction analysis reveals that 1 and 2 crystallize in the monoclinic space group P21/n and the orthorhombic space group Pccn, respectively. In 1, bimb adopts an anti-anti-anti conformation and bridges adjacent Cd(II) to form a two-dimensional (2D) network containing rhombohedral rings. The 2D layers are arranged in an offset ABCABC sequence to fill large void in the rhombohedral rings. In 2, bmib also exhibits an anti-anti-anti conformation, but it links neighboring Cd(II) into a one-dimensional (1D) chain. Br- in 1 and 2 serves as a monodentate ligand to balance charge. | 李小菊 郭小芳 马广超 | 2012 | Chinese Journal of Structural Chemistry2012，31，12： | 1 |
| 3 | Syntheses and Crystal Structures of Three Cadmium(II) Coordination Complexes Based on Flexible 1,2-Bis(imidazol-1~ˊ-yl)ethane显示文摘Three Cd(II) coordination complexes,{[Cd(bime)3](NO3)2·(H2O)3}n(1),[Cd(bime)Br2]n(2) and [(H2bime)(CdBr4)(H2O)]n(3)(bime = 1,2-bis(imidazol-1-yl)ethane),have been prepared and characterized.Single-crystal X-ray diffraction analysis reveals that 1~3 crystallize in the trigonal space group P-3,monoclinic space group C2/c and triclinic space group P1,respectively.In 1,bime bridges six-coordinated Cd(II) to generate a two-fold interpenetrating 3D coordination polymer,in which NO3- is not involved in coordination,but serves as a void filler to balance the charge of the 3D framework.The six NO3- and six uncoordinated water molecules form an unprecedented 24-membered macrocycle through hydrogen bonding interaction.In 2,bime in an anti-conformation links the CdBr2 units into a zigzag chain.In 3,bime does not take part in coordination,but is protonated to act as a counter cation of [CdBr4 ]2-.The hydrogen bonds between H2bime and [CdBr4]2- result in the formation of a supramolecular chain. | 钟鸿 郭小芳 王瑞虎 | 2013 | Chinese Journal of Structural Chemistry2013，32，9： | 0 |
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