The X-Ray Diffraction Pattern in the Image Seen Here Helped

question 50

Multiple Choice

The X-ray diffraction pattern in the image seen here helped determine the structure of

• A) alanine.
• B) penicillin.
• C) vitamin B₁₂.
• D) deoxyribonucleic acid.

---

Definitions:

Asymmetric Carbons

Refers to carbon atoms bonded to four different groups, making them centers of chirality.

Asymmetric Carbons

Carbon atoms that are attached to four different groups, making them stereocenters leading to chiral molecules.

Cis-1,2-dimethylcyclopentane

A cyclopentane molecule with two methyl groups attached to adjacent carbon atoms in the same plane.

Trans-1,3-dimethylcyclopentane

A cyclopentane molecule with methyl groups at the 1 and 3 positions, oriented across from each other.