Synthesis, structure and properties of RbMgBO3

A double borate RbMgBO3 was newly synthesized by solid state reactions and the crystal structure were determined from powder X-ray diffraction data. It crystallizes in cubic space group P213 (a=6.9493(1) Å, V=335.60(1) Å3, Z=4). RbMgBO3 was melted at 865.5 °C. The existence of only BO3 groups was confirmed by IR analysis. The RbMgBO3 conductivity was measured (10−6−10−5 S/cm).