Phase equilibria in the Tl<sub>2</sub>MoO<sub>4</sub>–R<sub>2</sub>(MoO<sub>4</sub>)<sub>3</sub>–Zr(MoO<sub>4</sub>)<sub>2</sub> (R = Al, Cr) systems: synthesis, structure and properties of new triple molybdates Tl<sub>5</sub>RZr(MoO<sub>4</sub>)<sub>6</sub> and TlRZr<sub>0.5</sub>(MoO<sub>4</sub>)<sub>3</sub>
Chimica techno acta