SYNTHESIS AND PROPERTIES OF NEW COMPOUNDS Rb<sub>5</sub>(Cu<sub>0.5</sub>Zr<sub>1.5</sub>)(MoO<sub>4</sub>)<sub>6</sub> AND Rb<sub>5</sub>(Cu<sub>0.5</sub>Hf<sub>1.5</sub>)(MoO<sub>4</sub>)<sub>6</sub>
New triple molybdates of rubidium, zirconium (hafnium) and cupric Rb5(Cu0.5R1.5)(MoO4)6 (R = Zr, Hf), which crystallize in a structure type K5(Mg0.5Zr1.5)(MoO4)6 (sp. gr. R3c, Z=6), were synthesized. Their X-ray and thermal characteristics, IR and Raman spectra and electrical properties were investigated.