Sep 01, 2017
Spectroscopy
An introduction to the IR spectroscopy of the carbonyl group, exploring why the peak is intense and showing how to apply that knowledge to the analysis of the spectra of ketones
Jul 01, 2017
Spectroscopy
Two unrelated discussions are presented: carbohydrates and alkynes.
May 01, 2017
Spectroscopy
We will discuss three different types of ether, which are characterized by the type of carbons attached to the central oxygen.
Apr 01, 2017
Spectroscopy
Our survey of the spectroscopy of the C–O bond continues. Here, we complete our discussion of alcohols and discuss how to distinguish pure alcohols, alcohol–water mixtures, and pure water from each other.
Jan 01, 2017
Spectroscopy
The number and position of C-O stretches will help us identify functional groups such as alcohols and ethers, and will help us distinguish between members of the same molecular class.
Nov 01, 2016
Spectroscopy
How can we distinguish the six different types of carbon–carbon double bonds, or alkenes, from each other?
Sep 01, 2016
Spectroscopy
The benzene fingers are a series of overtone and combination bands that can be used to distinguish substituted benzene rings when other methods do not work.
Jul 01, 2016
Spectroscopy
We explain the theory behind the three different types of IR bands, how to recognize them, and how to use them to help you interpret spectra.
May 01, 2016
Spectroscopy
There are three ways of arranging two substituents around a benzene ring, meaning that each disubstituted ring has three structural isomers. Fortunately, infrared spectroscopy can distinguish such structural isomers. Here, we explain how.
Mar 01, 2016
Spectroscopy
This installment looks at the nature of aromatic bonding and why aromatic rings have unique structures, bonding, and infrared spectra.
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