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首页> 外文期刊>Acta crystallographica. Section C, Structural chemistry. >In situ single-crystal to single-crystal (SCSC) transformation of the one-dimensional polymer catena-poly[[diaqua(sulfato)copper(II)]-μ2-glycine] into the two-dimensional polymer poly[μ2-glycine-μ4-sulfato-copper(II)]
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In situ single-crystal to single-crystal (SCSC) transformation of the one-dimensional polymer catena-poly[[diaqua(sulfato)copper(II)]-μ2-glycine] into the two-dimensional polymer poly[μ2-glycine-μ4-sulfato-copper(II)]

机译：将一维聚合物链状聚[[diaqua（sulfato）铜（II）]-μ2-甘氨酸]原位单晶转化为二维聚合物聚[μ2-甘氨酸- μ4-硫酸铜（II）]

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The one-dimensional coordination polymer catena-poly[diaqua(sulfato-κO)copper(II)]-μ2-glycine-κ2O:O′], [Cu(SO4)(C2H5NO2)(H2O)2]n, (I), was synthesized by slow evaporation under vacuum of a saturated aqueous equimolar mixture of copper(II) sulfate and glycine. On heating the same blue crystal of this complex to 435?K in an oven, its aspect changed to a very pale blue and crystal structure analysis indicated that it had transformed into the two-dimensional coordination polymer poly[(μ2-glycine-κ2O:O′)(μ4-sulfato-κ4O:O′:O′′:O′′)copper(II)], [Cu(SO4)(C2H5NO2)]n, (II). In (I), the CuII cation has a pentacoordinate square-pyramidal coordination environment. It is coordinated by two water molecules and two O atoms of bridging glycine carboxylate groups in the basal plane, and by a sulfate O atom in the apical position. In complex (II), the CuII cation has an octahedral coordination environment. It is coordinated by four sulfate O atoms, one of which bridges two CuII cations, and two O atoms of bridging glycine carboxylate groups. In the crystal structure of (I), the one-dimensional polymers, extending along [001], are linked via N—H...O, O—H...O and bifurcated N—H...O,O hydrogen bonds, forming a three-dimensional framework. In the crystal structure of (II), the two-dimensional networks are linked via bifurcated N—H...O,O hydrogen bonds involving the sulfate O atoms, forming a three-dimensional framework. In the crystal structures of both compounds, there are C—H...O hydrogen bonds present, which reinforce the three-dimensional frameworks.
机译：一维配位聚合物链-聚[对（硫酸根-κO）铜（II）]-μ2-甘氨酸-κ2O：O']，[Cu（SO4）（C2H5NO2）（H2O）2] n，（I）通过在真空下缓慢蒸发硫酸铜（II）和甘氨酸的饱和等摩尔含水混合物来合成C 1。在烤箱中将该复合物的相同蓝色晶体加热至435？K时，其外观变为非常浅的蓝色，晶体结构分析表明其已转变为二维配位聚合物poly [（μ2-glycine-κ2O： O'）（μ4-硫酸根-κ4O：O'：O''：O''）铜（II），[Cu（SO4）（C2H5NO2）] n，（II）。在（I）中，CuII阳离子具有五配位的方形-锥体配位环境。它由基面上的两个水分子和两个桥接甘氨酸羧酸酯基团的O原子以及在顶端位置的硫酸盐O原子配位。在配合物（II）中，CuII阳离子具有八面体配位环境。它由四个硫酸根O原子配位，其中一个桥连两个CuII阳离子和两个桥接甘氨酸羧酸根的O原子。在（I）的晶体结构中，沿[001]延伸的一维聚合物通过NH ... O，OH ... O和分叉的NH ... O，O连接。氢键，形成三维框架。在（II）的晶体结构中，二维网络通过分叉的，涉及硫酸盐O原子的NH ... O，O氢键连接，形成三维骨架。在这两种化合物的晶体结构中，均存在CHH ... O氢键，这些键可增强三维骨架。

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