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>
<i>New triple molybdates of rubidium, zirconium (hafnium) and cupric Rb</i><sub><i>5</i></sub><i>(Cu</i><sub><i>0.5</i></sub><i>R</i><sub><i>1.5</i></sub><i>)(MoO</i><sub><i>4</i></sub><i>)</i><sub><i>6</i></sub><i> (R = Zr, Hf), which crystallize in a structure type K</i><sub><i>5</i></sub><i>(Mg</i><sub><i>0.5</i></sub><i>Zr</i><sub><i>1.5</i></sub><i>)(MoO</i><sub><i>4</i></sub><i>)</i><sub><i>6</i></sub><i> (sp. gr. R3c, Z=6), were synthesized. Their X-ray and thermal characteristics, IR and Raman spectra and electrical properties were investigated.</i>