Which compound is used as a reference for calculating the extent of stability of benzene?
Correct answer: D. 1,3,5-cyclohexatriene
- A. Cyclohexane
- B. Cyclohexene
- C. 1,3,5-cyclohexene
- D. 1,3,5-cyclohexatriene
Explanation
1,3,5-Hexatriene is an open-chain conjugated diene that serves as a baseline to compare the stability of benzene due to its structure and bonding. The resonance energy of benzene can be understood in terms of the difference in energy between benzene and 1,3,5-hexatriene. While 1,3,5-hexatriene has three double bonds, it does not exhibit the same degree of stability as benzene due to the lack of cyclic delocalization and the unique resonance stabilization of the aromatic system in benzene.
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About Chemistry of Hydrocarbons
Hydrocarbons are studied through the structures and reactions of alkanes, alkenes, alkynes and aromatic compounds. Coverage includes free radical substitution in alkanes, electrophilic addition to carbon-carbon multiple bonds, benzene substitution, aromatic stability and the difference between addition reactions of alkenes and substitution reactions of benzene.
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