High-Pressure Synthesis and Crystal Structure of CeBO.

CeBO was synthesized under conditions of 2.6 GPa and 750 °C in a Walker-type multianvil apparatus. The crystal structure was determined on the basis of single-crystal X-ray diffraction data, collected at room temperature, revealing that CeBO is isotypic to LaBO. CeBO crystallizes monoclinically with four formula units in the space group 2/ (No. 15) and the lattice parameters = 1117.8(2), = 640.9(2), = 2531.7(5) pm, and = 100.2(1)°. The three-dimensional boron-oxygen framework consists of [BO] tetrahedra and trigonal-planar [BO] groups. The structure contains two crystallographically different cerium ions. Furthermore, Raman spectroscopy was performed on single crystals of CeBO.