Novel Route for Preparation of Molybdenum Dioxydichloridehydrate

Abstract

The reaction of mixtures of selenium and iodine trichloride with molybdenum oxytetrachloride in a sealed evacuated glass ampoul placed in a horizontal tube furnace. After heating for 72 h at 140 ºC the experiment resulted in the formation of luminous yellowish, moisture sensitive crystals that subliming at the colder parts of the glass ampoule. The XRD analysis of yellowish crystals showed that the crystal system is orthorhombic, lattice type primitive, space group pmn2. Lattice constants are a = 9.16 Å, b = 3.92 Å, c = 6.97 Å. The results were compared with the values of Inorganic Structure Data Base and it was found that yellowish crystals have certainly MoO₂Cl₂·H₂O formula. The method of preparation is quite new and the product is pure and has excellent large shining crystals.