Table of Contents
THE BASICS OF INFRARED INTERPRETATION
Advantages and Disadvantages of Infrared Spectroscopy
The Properties of Light
What Are Infrared Spectra Used For?
How Molecules Absorb Infrared Radiation
The Origins of Peak Positions, Peak Intensities, and Peak Widths
Dealing with Mixtures
Performing Identities
Infrared Spectral Interpretation: A Systematic 10-Step Approach
HYDROCARBONS
Straight Chain Alkanes
Estimating Hydrocarbon Chain Length
Branched Alkanes
Alkenes
Distinguishing cis and transisomers
Alkynes
Aromatic Hydrocarbons
Distinguishing Mono and Di- Substituted Benzene Rings
FUNCTIONAL GROUPS CONTAINING THE C-O BOND
Alcohols and Phenols
The Affects of Hydrogen Bonding
Distinguishing Primary, Secondary, and Tertiary Alcohols
Ethers
Distinguishing Saturated and Aromatic Ethers
Methyl Groups Attached to an Oxygen
THE CARBONYL GROUP
Ketones
Aldehydes
Carboxylic Acids and Derivatives
Carboxylic Acids
Carboxylates (soaps)
Acid Anhydrides
Esters
Distinguishing Saturated and Aromatic Esters
Organic Carbonates
ORGANIC NITROGEN COMPOUNDS
Amides
Distinguishing Primary, Secondary, and Tertiary Amides
Proteins
Imides
Amines
Distinguishing Primary, Secondary, and Tertiary Amines
Nitriles
The Nitro Group
ORGANIC COMPOUNDS CONTAINING SULFUR, SILICON, AND HALOGENS
Organic Sulfur Compounds
Thiols
Sufloxides, Sulfates, etc.
Organic Silicon Compounds
Silicones (Siloxanes)
Halogenated Organics
C-X Stretches
INORGANIC COMPOUNDS
The Impact of Water on Inorganic Spectra
Sulfates
Silica and Silicates
Carbonates
Nitrates
Phosphates
INFRARED SPECTRA OF POLYMERS
Polyethylenes
Polypropylene
Polystyrene
Polyesters
Acrylates
Isocyanates and Polyurethanes
Polycarbonates
Polyimides
Polytetrafluoroethylene
SPECTRAL INTERPRETATION AIDS
Atlases
Spectral Subtraction
Library Searching
"Expert" Software Programs
The Internet