Department of Chemistry, Oregon State University, 153 Gilbert Hall, Corvallis, Oregon 97331-4003, United States.
Inorg Chem. 2013 Feb 18;52(4):1807-11. doi: 10.1021/ic301814z. Epub 2013 Jan 25.
Sc(2)(μ-OH)(2)(H(2)O)(6)(NO(3))(2)(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 Sc(2)O(3) are also reported.
Sc(2)(μ-OH)(2)(H(2)O)(6)(NO(3))(2)(2) 是通过使用锌粉作为硝酸的还原剂，从水溶液中的硝酸钪溶液中合成的，该反应会导致 pH 值升高，促使水合钪阳离子发生缩合。这种制备方法可以很容易地得到克级规模的样品，产率接近 65%。单晶 X 射线衍射研究表明，该结构的特点是具有羟桥联的 Sc 二聚体。通过从头算计算对该化合物的 FTIR 光谱进行了建模，从而可以确定特征 IR 峰。还报告了一些关于该化合物向 Sc(2)O(3)热转化的初步观察结果。
