Driving Forces Of Metathesis Reactions

A discussion of recent mechanistic investigations is followed by an overview of selected applications.As you may have learnt in your general chemistry course, metathesis is the exchange of atoms or functional groups in the substrates and the rearrangement of their matching partners to form new compounds.Answer: a Explanation: The ROMP process is useful because of the formation of a regular polymer with regular number of double bonds.

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When the metal carbene attacks the double bond of the ring, it gives rise to highly strained intermediate.

The ring then opens to give the beginning of the polymer. Which of the following features are dependent on the solvent used in ring opening metathesis polymerization reaction?

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a) oxygenate group b) sulphate groups c) amine groups d) hydrate groups Answer: a Explanation: Molybdenum or Tungsten metathetic catalyst are affected by the oxygenate and nitrogenous groups attached to the ring in ROMP polymerization.

The substituent groups can deleteriously react with the catalysts and affect its activity.

For metathesis reactions to proceed to completion there must be a driving force.

That is, the tendency for the system to form a compound that removes itself from the reaction and prevents it from reversing to reform reactants.


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