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Microwave‐Assisted Hydrothermal Synthesis, Crystal Structure, and Thermal Decomposition of Strontium Citrate Monohydrate Sr3(C6H5O7)2·H2O
Zeitschrift für anorganische und allgemeine Chemie ( IF 1.4 ) Pub Date : 2020-06-18 , DOI: 10.1002/zaac.202000117
Matthias Hämmer 1 , Vivien Wessels 1 , Romy Ettlinger 1 , Henning. A. Höppe 1
Affiliation  

Microcrystalline strontium citrate monohydrate Sr3(C6H5O7)2·H2O was prepared by a microwave‐assisted hydrothermal synthesis. Single‐crystal X‐ray structure determination (P1, a = 10.0572(4), b = 10.1506(5), c = 10.8531(5) Å, α = 89.642(2)°, β = 67.156(2)°, γ = 62.367(2)°, 3040 independent reflections, 353 refined parameters, wR2 = 0.066) revealed three different Sr sites coordinated eight‐, nine and ten‐fold by two crystallographically different citrate molecules with one comprising oriental disorder, but not by the crystal water molecule. These findings are supported by energy dispersive X‐ray spectroscopy, powder XRD, infrared spectroscopy and thermal analysis. Further, the latter three methods are applied to the hitherto only strontium citrate hydrate with known crystal structure Sr3(C6H5O7)2·5H2O and both compounds are compared, especially with respect to their possible application as precursors.

中文翻译:

微波辅助水热合成柠檬酸锶一水合物Sr3(C6H5O7)2·H2O

通过微波辅助水热合成法制备了柠檬酸锶一水合物Sr 3(C 6 H 5 O 72 · H 2 O微晶。单晶X射线结构确定(P 1a = 10.0572(4),b = 10.1506(5),c = 10.8531(5)Å,α = 89.642(2)°,β = 67.156(2)°,γ = 62.367(2)°,3040次独立反射,353个精确参数,wR 2= 0.066)揭示了三个不同的Sr位点,它们由两个晶体学不同的柠檬酸盐分子(分别包含东方紊乱)而不是晶体水分子协调为八倍,九倍和十倍。这些发现得到了能量色散X射线光谱,粉末XRD,红外光谱和热分析的支持。此外,将后三种方法应用于迄今仅有的具有已知晶体结构Sr 3(C 6 H 5 O 72 · 5H 2 O的柠檬酸锶水合物,并比较了这两种化合物,特别是关于它们作为前体的可能用途。
更新日期:2020-06-18
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