Question

Draw a structural formula for each of the following compounds. a. 2,2 -dimethylheptane c. 3,3 -dimethylheptane b. 2,3 -dimethylheptane d. 2,4 -dimethylheptane

Short answer

Draw the structural formulas for each dimethylheptane isomer as follows: a. 2,2-dimethylheptane: \(\displaystyle{CH_{3}-C(CH_{3})_{2}-CH_{2}-CH_{2}-CH_{2}-CH_{2}-CH_{3}}\) b. 3,3-dimethylheptane: \(\displaystyle{CH_{3}-CH_{2}-C(CH_{3})_{2}-CH_{2}-CH_{2}-CH_{2}-CH_{3}}\) c. 2,3-dimethylheptane: \(\displaystyle{CH_{3}-C(CH_{3})-CH(CH_{3})-CH_{2}-CH_{2}-CH_{2}-CH_{3}}\) d. 2,4-dimethylheptane: \(\displaystyle{CH_{3}-C(CH_{3})-CH_{2}-CH(CH_{3})-CH_{2}-CH_{2}-CH_{3}}\)

Step-by-step solution

(Drawing 2,2-dimethylheptane)

(First, draw a straight carbon chain with 7 carbon atoms (heptane backbone). Then, add methyl groups (CH3) to the second carbon from both ends. Lastly, fill in the remaining hydrogen atoms, ensuring each carbon atom has 4 total bonds.)

(Drawing 3,3-dimethylheptane)

(First, draw a straight carbon chain with 7 carbon atoms (heptane backbone). Then, add methyl groups (CH3) to the third carbon from both ends. Lastly, fill in the remaining hydrogen atoms, ensuring each carbon atom has 4 total bonds.)

(Drawing 2,3-dimethylheptane)

(First, draw a straight carbon chain with 7 carbon atoms (heptane backbone). Then, add one methyl group (CH3) to the second carbon and another to the third carbon counting from any end. Lastly, fill in the remaining hydrogen atoms, ensuring each carbon atom has 4 total bonds.)

(Drawing 2,4-dimethylheptane)

(First, draw a straight carbon chain with 7 carbon atoms (heptane backbone). Then, add one methyl group (CH3) to the second carbon and another to the fourth carbon counting from any end. Lastly, fill in the remaining hydrogen atoms, ensuring each carbon atom has 4 total bonds.)