C in neat (no solvent) byproducts: Mo-oxychloride; heating of MoO2 and carbon in N2-stream satd. with CCl4 (<300°C); sublimation off of MoCl5 (vac., 100°C);
in tetrachloromethane heating of MoO3 with a dry soln. of Cl2 in CCl4 at 240°C in a closed tube for 3 hours;; crystn.; washing with CCl4 in CO2-atm.; sucking off; drying in vac.;;
