Zhu Bai-Chuan, Tang Kai-Bin
Acta Crystallogr Sect E Struct Rep Online. 2011 Apr 1;67(Pt 4):i26. doi: 10.1107/S1600536811006891. Epub 2011 Mar 12.
Potassium lanthanum titanate(IV), KLaTiO(4), has been synthesized by conventional solid-state reaction. It crystallizes isotypically with the NaLnTiO(4) (Ln = La, Pr, Nd, Sm, Eu, Gd, Y and Lu) family. Five of the six atoms in the asymmetric unit (one K, one La, one Ti and two O atoms) are situated on sites with 4mm symmetry, whereas one O atom has 2mm. site symmetry. The crystal structure can be described as being composed of single layers of distorted corner-sharing TiO(6) octa-hedra extending parallel to (001). The layers are alternately separated by K(+) and La(3+) cations along [001]. The coordination number of both K(+) and La(3+) cations is nine, resulting in distorted KO(9) and LaO(9) polyhedra.
钛酸镧钾（IV），KLaTiO₄，通过传统的固态反应合成。它与NaLnTiO₄（Ln = La、Pr、Nd、Sm、Eu、Gd、Y和Lu）族同型结晶。不对称单元中的六个原子中的五个（一个K、一个La、一个Ti和两个O原子）位于具有4mm对称性的位置，而一个O原子具有2mm的点对称性。晶体结构可以描述为由平行于（001）延伸的扭曲共角TiO₆八面体单层组成。这些层沿着[001]被K⁺和La³⁺阳离子交替隔开。K⁺和La³⁺阳离子的配位数均为九，导致扭曲的KO₉和LaO₉多面体。
