Crystal structure of Na2Mg2NiH6 revisited.
Crystal structure of Na2Mg2NiH6 revisited.
复制标题
重新审视 Na2Mg2NiH6 的晶体结构。
DOI：
10.1021/ic802417a
复制
发表时间：
2009
影响因子：
4.6
通讯作者：
K. Yvon
中科院分区：
文献类型：
--
作者：
M. Orlova;J. Rapin;K. Yvon
由Kadir和Noreus(Inorg.)化学。2007，46,2220-2223)进行了修订。虽然所报道的空间群对称性和晶胞参数是正确的，但镁和氢化物的位置需要互换。因此，四面体的[NiH(4)](4-)络合物是被Na(+)和Mg(2+)离子共同稳定的，而不是像作者所说的那样只被Na(+)离子稳定。修正后的结构模型的金属-氢键距离与已报道的相差0.6A，与通常在这类氢化物中观察到的距离更接近。综述了固体[NiH(4)](4-)络合物周围已知的阳离子构型。
The crystal structure of Na(2)Mg(2)NiH(6) as published by Kadir and Noreus (Inorg. Chem. 2007, 46, 2220-2223) is revised. While the reported space group symmetry and cell parameters are correct, the Mg and hydride positions need to be interchanged. Consequently, the tetrahedral [NiH(4)](4-) complexes are stabilized by both Na(+) and Mg(2+) ions and not by Na(+) ions only, as was stated by the authors. The metal-hydrogen bond distances of the revised structure model differ by up to 0.6 A from those reported and are more in line with those usually observed in these sorts of hydrides. An overview of the known cation configurations around solid-state [NiH(4)](4-) complexes is given.