| 原位产生的SO42-配位的二维无机钴配合物K2[Co3(OH)2(SO4)3(H2O)2]的水热合成及晶体结构(英文) |
| Hydrothermal Synthesis and Crystal Structure of 2D K2[Co3(OH)2(SO4)3(H2O)2] Coordination Polymer with the In-Situ Formation of SO42- |
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| 摘要: 相同的水热反应条件下4-氨基-二(2-吡啶基)-1，2，4-三氮唑(abpt)、KSCN与钴盐(CoCl2·6H2O)反应合成了2种新的钴配合物:零维的单核配合物[CoSCN(abpt)] (1α)和二维的无机层状配合物K2[Co3(OH)2(SO4)3(H2O)2] (1β)，并通过元素分析和红外光谱对其进行了表征。配合物1α的晶体属于单斜晶系，P21/c空间群。配合物1β晶体属于正交晶系，Cmc21空间群。在配合物1α中，abpt和SCN-配体都参与配位与Co(Ⅱ)离子形成了2个不同的单核单元，这些单核单元又通过S原子和N原子之间的氢键作用连成了三维超分子结构;在配合物1β中，abpt配体没有参与配位，而SCN-配体则被氧化成了SO42-离子并与Co(Ⅱ)离子配位形成了二维配位层状结构，相邻层之间进一步通过氢键作用形成了沿c轴方向有孔道的三维超分子网络，这些孔道里面填充着反离子K+。 |
| 关键词: 配位聚合物 水热原位反应 4-氨基-二(2-吡啶基)-1，2，4-三氮唑 |
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| Abstract: Reaction of CoCl2·6H2O， 4-amino-3，5-di(2-pyridyl)-4H-1，2，4-triazole (abpt)， KSCN results in formation of two new complexes， 0D mononuclear complex named [CoSCN(abpt)] (1α) and 2D inorganic coordination framework K2[Co3(OH)2(SO4)3(H2O)2] (1β)， in the same hydrothermal reaction system and were characterized by elemental analysis and IR. X-ray diffraction crystal structure analysis shows that 1α crystallizes in monoclinic system， space group P21/c with a=1.073 91(11) nm， b=1.589 59(16) nm， c=1.740 41(18) nm， β=106.720(2)°， V=2.845 4(5) nm3， Z=4; and 1β crystallizes in orthorhombic system， space group Cmc21 with a=1.794 24(17) nm， b=0.755 83(7) nm， c=0.976 05(10) nm， V=1.323 7(2) nm3， Z=4. In complex 1α， both abpt and SCN- ligands are coordinated to Co(Ⅱ) to form two different mononuclear units and further generate a 3D supramolecular architecture by the hydrogen bonds between the S atoms and uncoordinated N atoms of the abpt ligand. While in 1β， the abpt ligand is uncoordinated and the SCN- anion is changed to SO42- anion coordinated to Co(Ⅱ) atoms to result in a 2D coordination layer. Adjacent layers are linked to each other by hydrogen bonds to generate a 3D porous supramolecular architecture with 1D channels running along the c-axis， which are occupied by the counter K+ ions. CCDC: 658233， 1α; CSD: 418495， 1β. |
| Keywords: coordination polymer in-situ hydrothermal reaction 4-amino-3,5-bis(2-pyridyl)-1,2,4-triazole |
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| 陈梓云,彭梦侠.原位产生的SO42-配位的二维无机钴配合物K2[Co3(OH)2(SO4)3(H2O)2]的水热合成及晶体结构(英文)[J].无机化学学报,2007,23(12):2091-2096. |
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