A Novel Three-Dimensional Copper(II) 1,2-Ethylenediphosphonate Framework with Channel-like Voids

Koeferstein Roberto; Arnold Michael; Robl Christian

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A Novel Three-Dimensional Copper(II) 1,2-Ethylenediphosphonate Framework with Channel-like Voids

机译：具有通道状空隙的新型三维1,2-乙二膦酸铜（II）骨架

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Turquoise monoclinic single crystals of the novel three-dimensional Cu-2[mu(8)-O3P(CH2)(2)PO3]center dot 3.2H(2)O coordination polymer were prepared using the silica gel method. Space group C2/m (no. 12) with a = 1483.6(2), b = 668.44(8), c = 436.30(6) pm, beta = 93.28(2)degrees. The Cu2+ cation is coordinated by four oxygen atoms stemming from the 1,2-ethylenediphosphonate dianions in a square planar manner and two water molecules in the axial positions. The connection between the Cu2+ cations and the [CPO3] units from the 1,2-ethylenediphosphonate dianions leads to layers parallel to (100), which are linked by the ethylene groups to a three-dimensional framework with channel-like voids. The channel-like voids accommodate water molecules not bound to Cu2+ and extend parallel to [001] with an opening of about 550 pm x 260 pm. Magnetic measurements reveal an anti-ferromagnetic behavior due to a superexchange coupling between Cu2+ ions through an oxygen bridge. The UV/Vis spectrum reveals three d-d transition bands at 694, 774, and 918 nm. The compound can be fully dehydrated by thermal treatment and rehydrated by storage in ambient air.

机译：使用硅胶方法制备了新颖的三维Cu-2 [mu（8）-O3P（CH2）（2）PO3]中心点3.2H（2）O配位聚合物的绿松石单斜晶体。空间组C2 / m（第12号），a = 1483.6（2），b = 668.44（8），c = 436.30（6）pm，β= 93.28（2）度。 Cu 2+阳离子由呈正方形平面方式的1,2-乙撑二膦酸二价阴离子衍生的四个氧原子和轴向位置的两个水分子配位。 Cu2 +阳离子和1,2-亚乙基二膦酸酯的[CPO3]单元之间的连接导致平行于（100）的层，这些层通过亚乙基连接到带有通道状空隙的三维骨架上。通道状空隙容纳未结合Cu2 +的水分子，并以[550] x 260 pm的开口平行于[001]延伸。磁性测量结果显示，由于通过氧桥作用的Cu2 +离子之间的超交换耦合，反铁磁行为。 UV / Vis光谱显示了694、774和918 nm处的三个d-d过渡带。该化合物可通过热处理充分脱水，并通过储存在环境空气中而再水化。

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《Zeitschrift fur Anorganische und Allgemeine Chemie》 |2016年第19期|共7页
作者
Koeferstein Roberto; Arnold Michael; Robl Christian;
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正文语种 eng
中图分类化学;
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1; 2-Ethylenediphosphonic acid; Metal-organic framework; Crystal structure; Channel-like voids; Magnetic properties; UV/Vis spectroscopy;

机译：1;2-乙二膦酸;金属有机骨架;晶体结构;通道状空隙;磁性;紫外/可见光谱;

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1. A Novel Three-Dimensional Copper(II) 1,2-Ethylenediphosphonate Framework with Channel-like Voids [J] . Koeferstein Roberto, Arnold Michael, Robl Christian Zeitschrift fur Anorganische und Allgemeine Chemie . 2016,第19期

机译：具有通道状空隙的新型三维1,2-乙二膦酸铜（II）骨架
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A Novel Three-Dimensional Copper(II) 1,2-Ethylenediphosphonate Framework with Channel-like Voids

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