From One to Three Dimensions: Corrugated <sub>∞</sub><sup>1</sup>[NiGe] Ribbons as a Building Block in Alkaline Earth Metal Ae/Ni/Ge Phases with Crystal Structure and Chemical Bonding in AeNiGe (Ae = Mg, Sr, Ba)
作者:Viktor Hlukhyy、Lisa Siggelkow、Thomas F. Fässler
DOI:10.1021/ic302681t
日期:2013.6.17
The new equiatomic nickel germanides MgNiGe, SrNiGe, and BaNiGe have been synthesized from the elements in sealed tantalum tubes using a high-frequency furnace. The compounds were investigated by X-ray diffraction both on powders and single crystals. MgNiGe crystallizes with TiNiSi-type structure, space group Pnma, Z = 4, a = 6.4742(2) Å, b = 4.0716(1) Å, c = 6.9426(2) Å, wR2 = 0.033, 305 F2 values
使用高频炉从密封钽管中的元素合成了新的等原子镍锗化物MgNiGe,SrNiGe和BaNiGe。通过粉末和单晶的X射线衍射研究了这些化合物。MgNiGe结晶为TiNiSi型结构,空间群Pnma,Z = 4,a = 6.4742(2)Å,b = 4.0716(1)Å,c = 6.9426(2)Å,wR 2 = 0.033,305 F 2值, 20个可变参数。SrNiGe和BaNiGe是同型的并且具有反SnFCl型结构(Z = 4,Pnma)结晶,a = 5.727(1)Å,b= 4.174(1)Å,c = 11.400(3)Å,wR 2 = 0.078,354 F 2值,20个SrNiGe可变参数,a = 5.969(4)Å,b = 4.195(1)Å,c = 11.993(5)Å,wR 2 = 0.048,393 F 2值,BaNiGe的20个可变参数。阳离子尺寸的增加导致[NiGe]聚阴离