Synthese, Kristallstruktur und spektroskopische Charakterisierung von Bis(dimethylammonium)hexachlorotitanat [Me<sub>2</sub>NH<sub>2</sub>]<sub>2</sub>[TiCl<sub>6</sub>]/ Synthesis, Crystal Structure, and Spectroscopic Characterization of Bis(dimethylammonium) Hexachlorotitanate [Me<sub>2</sub>NH<sub>2</sub>]<sub>2</sub>[TiCl<sub>6</sub>]
作者:Stefan Rannabauer、Wolfgang Schnick
DOI:10.1515/znb-2003-0509
日期:2003.5.1
By the reaction of (Me3SiNH)2SiClNMe2 with TiCl4 the by-product [Me2NH2]2[TiCl6] was obtained in form of crystals suitable for single-crystal XRD (Pnnm, Z = 2, a = 722.01(3), b = 1428.36(5), c = 703.31(3) pm, T = 200 K, 901 independent reflections, 57 variables, R1 = 0.0636). The product was also synthesized in higher yield by the stoichiometric reaction of two equivalents of [Me2NH2]Cl with TiCl4
通过 (Me3SiNH)2SiClNMe2 与 TiCl4 的反应,副产物 [Me2NH2]2[TiCl6] 以适合单晶 XRD 的晶体形式获得(Pnnm,Z = 2,a = 722.01(3),b = 1428.36 (5),c = 703.31(3) pm,T = 200 K,901 次独立反射,57 个变量,R1 = 0.0636)。通过两当量的 [Me2NH2]Cl 与 TiCl4 在 CHCl3 中的化学计量反应,在室温下也以更高的收率合成了黄色结晶粉末的产物。双(二甲基铵)六氯钛酸盐由 [TiCl6]2- 阴离子形成细长的八面体和 [Me2NH2]+ 离子构成。[TiCl6]2- 离子通过 [Me2NH2]+ 离子通过 NH…Cl 氢桥连接,形成类似于膨胀金红石结构类型的排列。[TiCl6]2-八面体的伸长率也通过红外光谱和拉曼光谱进行了验证,确认局部对称性从 Oh 减少到 D