Ammonothermal Synthesis and Crystal Structure of BaAl<sub>2</sub>(NH<sub>2</sub>)<sub>8</sub>·2NH<sub>3</sub>
作者:Philipp Pust、Sebastian Schmiechen、Frauke Hintze、Wolfgang Schnick
DOI:10.1002/zaac.201300088
日期:2013.6
BaAl2(NH2)8·2NH3 was synthesized starting from an intermetallic phase with nominal composition Al2Ba under ammonothermal conditions in a stainless-steel autoclave at 823 K and 245 MPa. Single crystals were grown on aluminum substrates and prepared under low-temperature conditions. The crystal structure (Rc (no. 167), a = 15.7370(17), c = 28.804(6) A, Z = 1, 1829 reflections, 65 parameters, wR2 = 0
BaAl2(NH2)8·2NH3 是从标称成分为 Al2Ba 的金属间相开始,在 823 K 和 245 MPa 的不锈钢高压釜中在氨热条件下合成的。单晶生长在铝基板上并在低温条件下制备。晶体结构(Rc(no. 167), a = 15.7370(17), c = 28.804(6) A, Z = 1, 1829次反射, 65个参数, wR2 = 0.07)在单晶X的基础上求解-射线衍射数据。BaAl2(NH2)8·2NH3 包含孤立的 Al(NH2)4-四面体,沿 [001] 形成两种不同类型的通道。