[Sc2(μ-OH)2(H2O)6(NO3)2](NO3)2: Aqueous Synthesis and Characterization
[Sc2(μ-OH)2(H2O)6(NO3)2](NO3)2: Aqueous Synthesis and Characterization
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DOI：
10.1021/ic301814z
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发表时间：
2013-02-18
影响因子：
4.6
通讯作者：
Keszler, Douglas A.
中科院分区：
文献类型：
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作者：
Wang, Wei;Chang, I-Ya;Keszler, Douglas A.
以硝酸钪为原料，用锌粉作还原剂，使溶液pH升高，促使钪阳离子缩合，合成了[Sc-2（μ-OH）（2）（H2O）（6）（NO3）（2）]（NO3）（2）。这种制备路线容易产生克级样品，产率接近65%。单晶X-射线衍射研究揭示了一种结构，其特征在于由羟基桥Sc二聚体。化合物的FTIR光谱已通过从头计算建模，允许识别特征IR峰。一些初步的观察上的化合物的热转化为Sc_2O_3的报告。
[Sc-2(mu-OH)(2)(H2O)(6)(NO3)(2)](NO3)(2) has been synthesized from an aqueous scandium nitrate solution by using zinc powder as a reducing agent for nitric acid, which drives an increase in pH and forces the condensation of aqua scandium cations. This preparative route readily produces gram-scale samples with yields near 65%. A single-crystal X-ray diffraction study reveals a structure characterized by a hydroxo-bridged Sc dimer. The FTIR spectrum of the compound has been modeled via ab initio computations, allowing the identification of signature IR peaks. Some initial observations on the thermal transformation of the compound to Sc2O3 are also reported.