Which one of the following molecules is a structural isomer of methylcyclopentane?
A. hexane
B. cyclohexene
C. hex-2-ene
D. 2,2-dimethylbutane
E. 2-methylpentane
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Brief recall on isomerism:
Structural Isomerism - atoms and functional groups attached in different ways
Structural isomerism can be further divided into differences in chain length, differences in the position of functional groups, or differences in functional group
Stereoisomerism - Different spatial arrangements of atoms in molecules
Stereoisomerism can be further divided into geometric (cis/trans) or optical (ex. enantiomers)
Now that we know we are looking for a compound with the same molecular formula but differ in structure, we can draw out the options and compare the molecular formulas.
Methylcyclopentane
Answer options:
As we can see, option C matches the one from the question.
\fcolorbox{red}{grey!30}{Therefore C is correct. }
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