## 51B. Lecture 16. Infrared Spectroscopy + Ch. 14.

#### Recorded February 15, 2013.

Topics Covered: Infrared Spectroscopy and Chapter 14.

Index of Topics:

00:09- Superomniphobic material

01:47- Underlying Molecules

CHAPTER 13- Mass Spectrometry and Infrared Spectroscopy

04:42- 13.1: The Mass Spectrometer-how does it work?

09:26- 13.1-13.3: Mass spectra are complex due to fragmentation

11:55- 13.4: The Exact Mass gives the Molecular Formula

15:14- 10.2: Use the Molecular Formula to determine Degree of Unsaturation

19:25- 13.5: Electromagnetic Radiation and Infrared

22:45- 13.6: Dumb Characteristics of an IR spectrum

26:56- 13.6: Key Frequency Regions of the IR spectrum

32:22- 13.6: Practice: Regions of the IR spectrum

34:58- 13.6,7: Polar Bonds Lead to Intense Peaks

39:35- 13.7: Hydrogen bonding leads to lumpy peaks

42:06- 13.6: Dumb Characteristics of an IR spectrum (revisited)

42:44- 13.6,7: Check if C-H stretches are above or below 300 cm^(-1)

46:00- Reading Spectra Examples

Required attribution: Vranken, David Van. Organic Chemistry 51B (UCI OpenCourseWare: University of California, Irvine), ocw.uci.edu/courses/chem_51b_org....html. [Access date]. License: Creative Commons Attribution-ShareAlike 3.0 United States License (creativecommons.org/licenses/by-...n_US).

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