The Ambiguous Name Dimethylcyclopentene Does Not Clearly Distinguish Between Several

question 199

Essay

The ambiguous name dimethylcyclopentene does not clearly distinguish between several structures.
a)Draw the structures of all constitutional isomers corresponding to this name.
b)Indicate which of these is likely to be the most stable,i.e,have the smallest heat of combustion,justifying your rationale briefly.
c)Which of these structures represents an achiral molecule?

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Definitions:

Structure

The arrangement of atoms within a molecule which defines its specific shape and properties.

Proton NMR

A spectroscopic technique used to determine the structure of organic compounds by analyzing the environment of hydrogen atoms.

Aromatic Ring

A cyclic, planar molecule with delocalized π electrons over the atoms forming the ring, following Huckel's rule.

Compound Name

The systematic or common name given to a chemical compound, based on the rules of the chemical nomenclature used to identify it uniquely.