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

The Tl 2 MoO 4 –R 2 (MoO 4 ) 3 –Zr(MoO 4 ) 2 (R = Al, Cr) systems were studied in the subsolidus region using X-ray powder diffraction and differential scanning calorimetric (DSC) analysis. Quasi-binary joins were revealed, and triangulation was carried out. New ternary molybdates: Tl 5 RZr(MoO 4 ) 6 (5:1:2) and TlRZr 0.5 (MoO 4 ) 3 (1:1:1) (R = Al, Cr) were prepared. The unit cell parameters for the new compounds were calculated.