Molybdenum dichloride dioxide is the inorganic compound with the formula . It is a yellow diamagnetic solid that is used as a precursor to other molybdenum compounds. Molybdenum dichloride dioxide is one of several oxychlorides of molybdenum.
Structure Gaseous molybdenum dichloride dioxide is a monomer, but upon condensation, it polymerizes to give a coordination polymer of uncertain structure.
Preparation MoO2Cl2 can also be prepared from MoOCl4: MoOCl4 + O(Si(CH3)3)2 → MoO2Cl2 + 2 ClSi(CH3)3
It is also prepared by chlorination of molybdenum dioxide and molybdenum trioxide: MoO2 + Cl2 → MoO2Cl2 MoO3 + Cl2 → MoO2Cl2
Reactions Many bisadducts are known of the type . These octahedral molecular complexes are soluble in organic solvents. The adduct with dimethylsulfoxide can be readily prepared by treatment molybdenum trioxide with concentrated hydrochloric acid: MoO3 + 2 HCl + 2 L → MoO2Cl2L2 + H2O
When treated with bulky anilines, converts to diimido complexes, one of which is . This complex is the precursor to the Schrock carbenes of the type .
See also Molybdenum oxytetrachloride, Molybdenum oxydichloride,
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