Pre-lecture Reading Assignment: Equivalent Protons and Integration
Quick Intro
Some hydrogen atoms (or protons) in a structure are the same, while others are different. Knowing when protons are equivalent in a structure will help us to decipher the clues we obtain from a 1H NMR spectrum. In calculus you learned that integration is the area under a curve. The same is true in spectroscopy! The area under the curve, or integration, in a 1H NMR spectrum tells us the relative numbers of hydrogen atoms that correspond to each signal.
Objectives
- Recognize chemically equivalent protons in a structure.
- Explain what information integration values provide.
- Determine integration values from integral trails when values are not directly provided.
Associated Reading
- Smith 3rd ed: Ch 14.2, 14.5
- Smith 4th ed: Ch 14.2, 14.5
- Smith 5th ed: Ch 14.2, 14.5
- Smith 6th ed: Spectroscopy C.2, C.5
Your Tasks
Before Class
- Complete assigned reading.
- Get the worksheet for the lecture.
After Class
- Work on more problems.
- Go to a discussion section and/or office hours.
- Review any areas that you struggled with on in-class activities.