Molybdenum(V) Chloride

[10241-05-1] Cl5Mo (MW 273.19) InChI = 1S/5ClH.Mo/h5*1H;/q;;;;;+5/p-5 InChIKey = GICWIDZXWJGTCI-UHFFFAOYSA-I (chlorinating agent for alkyl halides,5 alkenes,7 and alkynes;8 used as a Lewis acid and as a catalyst for CO2 insertion to oxiranes,9 for CC coupling of alkenyllithium reagents,10 and for condensation of nitrobenzene with alcohols;11 easily reduced to MoIII species, useful as a reagent of deoxygenation;12, 13 methylenemolybdenum reagents for chemoselective carbonyl alkenation are prepared from MoCl517, 18) Alternate Name: molybdenum pentachloride. Physical Data: mp 204 ± 1 °C; bp 276.5 °C; d 2.936 g cm−3. Solubility: sol H2O, where it undergoes hydrolysis; slightly sol TiCl4, diethyl ether. Analysis of Reagent Purity: pure reagent (99.9%) is commercially available, packaged in ampules. Preparative Methods: by the reaction of molybdenum(VI) oxide and carbon tetrachloride or CCl2CClCCl3 as very dark-colored crystals.1-3 The industrial method is the direct chlorination of molybdenum metal. A convenient laboratory technique is the liquid-phase reaction system that uses refluxing thionyl chloride and MoO3.4 Handling, Storage, and Precautions: moisture sensitive; store under nitrogen. Use in a fume hood.