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首页> 外文期刊>Polyhedron: The International Journal for Inorganic and Organometallic Chemistry >Sonochemical syntheses of a new fibrous-like nano-scale strontium(II) 3D coordination polymer; Precursor for the fabrication of a strontium carbonate nanostructure
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Sonochemical syntheses of a new fibrous-like nano-scale strontium(II) 3D coordination polymer; Precursor for the fabrication of a strontium carbonate nanostructure

机译：新型纤维状纳米级锶（II）3D配位聚合物的声化学合成;用于制备碳酸锶纳米结构的前体

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摘要

Nanostructures of a new three-dimensional Sr(II) coordination polymer, {[Sr(H_2IDC)_2(H_2O)]·(H _2O)}n (1) (H_3IDC = 4,5-imidazoledicarboxylic acid), have been synthesized by a sonochemical process and characterized by field emission scanning electron microscopy (FESEM), X-ray powder diffraction (XRPD), FT-IR spectroscopy and elemental analyses. The effect of the concentration of the starting reagents on the size and morphology of nanostructured compound 1 has also been investigated. Structural determination of compound 1 reveals the Sr(II) ion is eight coordinated, bonded to one nitrogen atom and six oxygen atoms from the H_2IDC- ligand and a water molecule. The thermal stability of compound 1 has been studied by thermal gravimetric (TG) and differential thermal analyses (DTA). Compound 1 polymerizes on heating the solid at 210 C under a reversible crystal-to-crystal transformation, to form a new compound that is suggested to be the water-free compound, [Sr(H_2IDC)_2]_n (2), that was characterized by powder X-ray diffraction techniques. SrCO_3 nanostructures were simply synthesized by the solid-state transformation of compound 1 at 500 C under an air atmosphere.
机译：新型三维三维Sr（II）配位聚合物{[Sr（H_2IDC）_2（H_2O）]·（H _2O）} n（1）（H_3IDC = 4,5-咪唑二羧酸）的纳米结构已经合成声化学过程，并通过场发射扫描电子显微镜（FESEM），X射线粉末衍射（XRPD），FT-IR光谱和元素分析进行​​表征。还研究了起始试剂的浓度对纳米结构化合物1的尺寸和形态的影响。化合物1的结构测定表明，Sr（II）离子是八个配位的，与H_2IDC-配体和水分子的一个氮原子和六个氧原子键合。化合物1的热稳定性已通过热重（TG）和差热分析（​​DTA）进行了研究。化合物1在210℃加热下以可逆晶体-晶体转化形式聚合，形成一种新化合物，该化合物被认为是无水化合物[Sr（H_2IDC）_2] _n（2），即用粉末X射线衍射技术表征。 SrCO_3纳米结构简单地通过在大气气氛下，500℃下化合物1的固态转化来合成。

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