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首页> 外文期刊>Crystal growth & design >Synthesis and crystal structures of various phases of the microporous three-dimensional coordination polymer [Zr(OH)_2(C_2O_ 4)]_n
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Synthesis and crystal structures of various phases of the microporous three-dimensional coordination polymer [Zr(OH)_2(C_2O_ 4)]_n

机译:微孔三维配位聚合物[Zr(OH)_2(C_2O_4)] _ n的合成及各相的晶体结构

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摘要

A homometallic Zr(IV)-oxalate three-dimensional (3-D) coordination polymer of formula [Zr(OH)_2(C_2O_4)·0.5H_ 2O] is reported. This compound was found to be a microporous solid with reversible sorption abilities. Upon guest release and sorption, the crystalline material undergoes single crystal to single crystal transitions. The crystal structures for three phases have been solved from single crystal diffraction studies. They consist of the guest containing frameworks [Zr(OH)_2(C_2O_4)·0.5H_2O], 1, 3, and the guest-free porous phase [Zr(OH)_2(C_2O_ 4)], 2; all are found with tetragonal space group I4/m. Phase 1 has been obtained by controlled diffusion of the reagents (ZrO(NO_3)_ 2 and H_2C_2O_4) in a silica gel medium; the other phases have been formed from 1 by thermal activation (2) and re-adsorption of H_2O (3).
机译:报道了式[Zr(OH)_2(C_2O_4)·0.5H_2O]的均金属Zr(IV)-草酸酯三维(3-D)配位聚合物。发现该化合物是具有可逆吸附能力的微孔固体。在客体释放和吸附后,结晶材料经历单晶至单晶的转变。通过单晶衍射研究已经解决了三相的晶体结构。它们由含有客体的骨架[Zr(OH)_2(C_2O_4)·0.5H_2O] 1、3和无客体的多孔相[Zr(OH)_2(C_2O_4)] 2组成。全部都以四边形空间群I4 / m找到。通过控制试剂(ZrO(NO_3)_2和H_2C_2O_4)在硅胶介质中的扩散获得了阶段1;其他相是由1通过热活化(2)和H_2O的再吸附(3)形成的。

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