A new compound of the formula Mg 3 In 4 V 6 O 24 belonging to the family M 3 A 4 V 6 O 24 [where M = metal(II), A = metal(III)] was obtained by the solid-state reaction method. The compound was synthesized by heating in air a mixture of Mg 3 (VO 4 ) 2 and InVO 4 or MgV 2 O 6 and In 2 O 3 or In 2 O 3 and V 2 O 5 , with a precursor of MgO. The new compound was characterized by XRD, SEM, IR, UV-Vis and DTA-TG methods. Mg 3 In 4 V 6 O 24 was shown to crystallize in the triclinic system. Its unit cell parameters were calculated. The new compound is stable in air up to 1000°C and is a semiconductor (E g * 3.3 eV). Keywords Mg 3 In 4 V 6 O 24 Á Ceramic compound Á Solid-state reaction Á Magnesium vanadate(V)
ExperimentalThe commercial reagents used for syntheses were:• 3MgCO 3 ÁMg(OH) 2 Á3H 2 O (a.p., POCh, Gliwice, Poland), as a precursor of MgO,