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首页> 外文期刊>Acta crystallographica. Section C, Structural chemistry. >Two different anionic manganese(II) coordination polymers constructed through dicyanamide coordination bridges
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Two different anionic manganese(II) coordination polymers constructed through dicyanamide coordination bridges

机译：通过双氰胺配位桥构建的两种不同的阴离子锰（II）配位聚合物

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摘要

In order to explore new metal coordination polymers and to search for new types of ferroelectrics among hybrid coordination polymers, two manganese dicyanamide complexes, poly[tetramethylammonium [di-μ3-dicyanamido-κ6N1:N3:N5-tri-μ2-dicyanamido-κ6N1:N5-dimanganese(II)]], {[(CH3)4N][Mn2(NCNCN)5]}n, (I), and catena-poly[bis(butyltriphenylphosphonium) [[(dicyanamido-κN1)manganese(II)]-di-μ2-dicyanamido-κ4N1:N5]], {[(C4H9)(C6H5)3P]2[Mn(NCNCN)4]}n, (II), were synthesized in aqueous solution. In (I), one MnII cation is octahedrally coordinated by six nitrile N atoms from six anionic dicyanamide (dca) ligands, while the second MnII cation is coordinated by four nitrile N atoms and two amide N atoms from six anionic dca ligands. Neighbouring MnII cations are linked together by μ-1,5- and μ-1,3,5-bridging dca anions to form a three-dimensional polymeric structure. The anionic framework exhibits a solvent-accessible void of 289.8??3, amounting to 28.0% of the total unit-cell volume. Each of the cavities in the network is occupied by only one tetramethylammonium cation. In (II), each MnII cation is octahedrally coordinated by six nitrile N atoms from six dca ligands. Neighbouring MnII cations are linked together by double dca bridges to form a one-dimensional polymeric chain, and C—H...N hydrogen-bonding interactions are involved in the formation of the one-dimensional layer structure.
机译：为了探索新的金属配位聚合物并在混合配位聚合物中寻找新型的铁电体，我们提出了两种锰双氰胺配合物：聚[四甲基铵[di-μ3-dicyanamido-κ6N1：N3：N5-tri-μ2-dicyanamido-κ6N1]： N5-二锰（II）]]，{[（（CH3）4N] [Mn2（NCNCN）5]} n，（I）和阳离子-聚[双（丁基三苯基phosph）[[（二氰基氨基-κN1）锰（II）在水溶液中合成[[（C4H9）（C6H5）3P] 2 [Mn（NCNCN）4]} n，（II）]-di-μ2-dicyanamido-κ4N1：N5]。在（I）中，一个MnII阳离子通过来自六个阴离子双氰胺（dca）配体的六个腈N原子进行八面体配位，而第二个MnII阳离子通过来自六个阴离子dca配体的四个腈N原子和两个酰胺N原子进行配位。相邻的MnII阳离子通过μ-1,5-和μ-1,3,5-桥dca阴离子连接在一起，形成三维聚合结构。阴离子骨架的溶剂可及孔隙为289.8？3，占单位晶胞总体积的28.0％。网络中的每个腔仅被一个四甲基铵阳离子占据。在（II）中，每个MnII阳离子由来自六个dca配体的六个腈N原子八面体配位。相邻的MnII阳离子通过双dca桥连接在一起形成一维聚合物链，并且CHH ... N氢键相互作用涉及一维层结构的形成。

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