Animated Spectra

This site has been developed to help you gain a better understanding and more experience solving Infrared (IR), Nuclear Magnetic Resonance (¹H-NMR and ¹³C-NMR) and Mass Spectroscopy (MS) techniques that are so important in Organic Chemistry. These techniques are used in the determination of the structure of organic compounds. These spectra are examples of organic compounds and are interactive in that you can "click" on a peak to see the atom(s) or groups responsible for the peak. Once you are comfortable with the assignment of the peaks you should move onto the Complete Structure Determination exercises.
Note: you need Java 1.6 for the Jspecview applet to work correctly.

Compound Type	IR Spectra (Important peaks)	H-NMR Spectra	¹³C-NMR Spectra	MS Spectra
Alkanes	Pentane			Decane
Alkenes	(C=C ~1650 cm^-1) Cyclohexene Propene 2-propen-1-ol	3-bromopropene
Alkynes	(C≡C ~2150 cm^-1) Propyne 1-butyne
Aromatics	(C=C ~1650 cm^-1) Toluene Acetophenone	Toluene Acetophenone	Toluene Acetophenone	Toluene Acetophenone
Alkyl Halides	2-bromopropane	3-bromopropene Bromoethane Bromopropane t-Butyl bromide 1,1-dichloroethane		1-bromobutane 2-chloropropane
Ethers	(C-O ~1100 cm^-1) Diethyl Ether Tetrahydrofuran	Diethyl Ether	Diethyl Ether	Diethyl Ether Tetrahydrofuran
Epoxides	(C-O ~1100 cm^-1) Ethylene oxide 1,2-epoxycyclohexane			Propylene oxide
Amines	(N-H ~3500 cm^-1) Aniline 1-butanamine	1-butanamine	1-butanamine	1-butanamine Aniline
Alcohols	(O-H ~3600 cm^-1) (C-O ~1100 cm^-1) 2-propanol Phenol 2-propen-1-ol Benzyl Alcohol	2-propanol Phenol	2-propanol Phenol 2-butanol	2-propanol Phenol Benzyl Alcohol
Ketones	(C=O ~1700 cm^-1) Acetone Acetophenone	Acetone Acetophenone 3-methyl-2-butanone	Acetone Acetophenone	Acetone Acetophenone
Aldehydes	(C=O ~1700 cm^-1) Benzaldehyde Ethanal Propanal	Propanal	Propanal	Benzaldehyde Propanal
Nitriles	(C≡N ~2250 cm^-1) Acetonitrile	Acetonitrile	Acetonitrile	Acetonitrile
Carboxylic Acids	(C=O ~1700 cm^-1) (C-O ~1100 cm^-1) (O-H ~3000 cm^-1) broad & weak Propanoic acid Isophthalic Acid Acetic acid Benzoic acid	Propanoic acid Isophthalic Acid Benzoic acid	Propanoic acid Isophthalic Acid Benzoic acid	Propanoic acid Isophthalic Acid Benzoic acid
Acyl Halides	(C=O ~1750 cm^-1 - ~1800 cm^-1) Benzoyl Chloride			Benzoyl Chloride
Anhydrides	(C=O ~1700 cm^-1) (C-O ~1100 cm^-1) usually two peaks Acetic anhydride	Acetic anhydride	Acetic anhydride	Acetic anhydride
Esters	(C=O ~1700 cm^-1) (C-O ~1100 cm^-1) usually two peaks Ethyl Acetate Methyl Benzoate γ-butyrolactone	Ethyl Acetate Methyl Benzoate γ-butyrolactone Methyl Acetate	Ethyl Acetate Methyl Benzoate γ-butyrolactone	Ethyl Acetate Methyl Benzoate γ-butyrolactone
Amides	(C=O ~1700 cm^-1) (N-H ~3500 cm^-1) Acrylamide Propanamide N-methylacetamide	Acrylamide	Acrylamide	Acrylamide Propanamide

Please Email me comments about these pages.
The source for the spectra include,
the SDBS for MS,
the NIST WebBook for IR & MS,
the PSLC for NMR,
and Pacific Lutheran University FTNMR FID Archive,
as well as The Ohio State University, Dept. of Chemistry.
© R. Spinney 2006. All rights reserved.

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