Question
Give a suitable chemical equation for the preparation of molybdenocene. Gives its reaction with
ethylene.
Answer :
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Molybdenocene, ((\eta^5\text{-}C_5H_5)_2Mo), is an organometallic sandwich compound of molybdenum in which the metal is bonded to two cyclopentadienyl ((Cp)) rings. It is commonly prepared by the reduction of molybdenum tetrachloride in the presence of sodium cyclopentadienide. A suitable chemical equation is: [ MoCl_4 + 2NaC_5H_5 \rightarrow (C_5H_5)_2MoCl_2 + 2NaCl ] The dichloride formed is then reduced with sodium amalgam or sodium metal: [ (C_5H_5)_2MoCl_2 + 2Na \rightarrow (C_5H_5)_2Mo + 2NaCl ] Alternatively, the reduction may
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