9. When [Fe(CO)5] is refluxed with cyclopentadiene, compound A is formed, which has the empirical formula C8H6O3Fe, and a complicated 'H nmr spectrum. Compound A readily loses CO to give compound B, which has two 'H nmr resonances, one at negative chemical shift and relative intensity one, and the other at around 5 ppm with relative intensity of five. Subsequent heating of B results in the loss of H₂ and the formation of C. Compound C has a single 'H nmr resonance and the empirical formula C₂H5O₂Fe. Treatment of C with iodine results in D, FeC₂H5O₂I. Treatment of C with potassium metal, followed by CH3Br, yields E. Propose structures for A - E.
Catalysis and Enzymatic Reactions
Catalysis is the kind of chemical reaction in which the rate (speed) of a reaction is enhanced by the catalyst which is not consumed during the process of reaction and afterward it is removed when the catalyst is not used to make up the impurity in the product. The enzymatic reaction is the reaction that is catalyzed via enzymes.
Lock And Key Model
The lock-and-key model is used to describe the catalytic enzyme activity, based on the interaction between enzyme and substrate. This model considers the lock as an enzyme and the key as a substrate to explain this model. The concept of how a unique distinct key only can have the access to open a particular lock resembles how the specific substrate can only fit into the particular active site of the enzyme. This is significant in understanding the intermolecular interaction between proteins and plays a vital role in drug interaction.
![9. When [Fe(CO)s] is refluxed with cyclopentadiene, compound A is formed, which has the
empirical formula C8H6O3Fe, and a complicated 'H nmr spectrum. Compound A readily loses
CO to give compound B, which has two 'H nmr resonances, one at negative chemical shift and
relative intensity one, and the other at around 5 ppm with relative intensity of five. Subsequent
heating of B results in the loss of H₂ and the formation of C. Compound C has a single 'H nmr
resonance and the empirical formula C₂H5O₂Fe. Treatment of C with iodine results in D,
FeC₂H5O₂I. Treatment of C with potassium metal, followed by CH3Br, yields E.
Propose structures for A - E.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F0ee67c44-0754-41fd-9006-bdc882dbaccb%2Fc055d34b-12d3-4e38-b732-9586d59ac9fd%2Fcsz33zg.jpeg&w=3840&q=75)
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