College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, P. R. China.
College of Chemistry and Chemical Engineering, Chongqing University, NO. 174 Shazheng Street, Shapingba District, Chongqing, 400044, P. R. China.
Chemistry. 2018 Oct 17;24(58):15491-15494. doi: 10.1002/chem.201803093. Epub 2018 Sep 19.
All reported layered metal hydroxides have brucite-like metal-hydroxyl host layers, and the discovery of other types of layered metal hydroxides could significantly extend the layered metal hydroxide families, which is meaningful in both theory and applications. Here, through hydroperoxyl anion coordinated In cations as a precursor, a new layered indium hydroxide was synthesized, where only a three-dimensional cubic phase had existed before. The layer of the product exhibits an unusual structure where In(OH) octahedra share edges and vertexes with each other to form layers, which is completely different from the common edge-sharing brucite-like metal-hydroxyl layers. By investigating the formation mechanism, the new layered structure is found to be formed by changing the traditional crystallization path through the hydroperoxyl anion coordinated intermediates. Many other new phases could also be discovered by following the same intrinsic principle.
所有报道的层状金属氢氧化物都具有水镁石类似的金属-氢氧根基(host layer)，而发现其他类型的层状金属氢氧化物可以显著扩展层状金属氢氧化物家族，这在理论和应用上都具有重要意义。在这里，通过过氧氢阴离子配位的铟阳离子作为前体，合成了一种新的层状氢氧化铟，而之前只存在三维立方相。产物的层表现出一种不寻常的结构，其中 In(OH)八面体彼此共享边缘和顶点形成层，这与常见的共享边缘的水镁石类似的金属-氢氧根基层完全不同。通过研究其形成机制，发现新的层状结构是通过过氧氢阴离子配位中间体改变传统的结晶路径形成的。通过遵循相同的内在原理，也可以发现许多其他新相。
