Analyzing Infrared Spectra
The electromagnetic radiation or frequency is classified into radio-waves, micro-waves, infrared, visible, ultraviolet, X-rays and gamma rays. The infrared spectra emission refers to the portion between the visible and the microwave areas of electromagnetic spectrum. This spectral area is usually divided into three parts, near infrared (14,290 – 4000 cm-1), mid infrared (4000 – 400 cm-1), and far infrared (700 – 200 cm-1), respectively. The number set is the number of the wave (cm-1).
IR Spectrum Of Cyclohexanone
It is the analysis of the structure of cyclohexaone using IR data interpretation.
IR Spectrum Of Anisole
Interpretation of anisole using IR spectrum obtained from IR analysis.
IR Spectroscopy
Infrared (IR) or vibrational spectroscopy is a method used for analyzing the particle's vibratory transformations. This is one of the very popular spectroscopic approaches employed by inorganic as well as organic laboratories because it is helpful in evaluating and distinguishing the frameworks of the molecules. The infra-red spectroscopy process or procedure is carried out using a tool called an infrared spectrometer to obtain an infrared spectral (or spectrophotometer).
How do you know that the absorption band at ~1100 cm-1 in Figure is due to a C¬O bond and not to a C¬N bond?
The given figure shows a strong absorption at 1100cm-1 representing the presence of carbon-oxygen bond.
The compound is not alcohol as there is no absorption present above 3100cm-1. Also, the compound does not show any absorption at 1700cm-1 so, the compound is not carbonyl carbon. The compound contains no C=N, C-N, C=C bonds, so the compound is an ether.
Carbon-hydrogen absorption bands exhibits that it contains hydrogen attached to sp3 carbons (2950 cm-1) and methyl group is present and its absorption is seen at 1358cm-1.
Compound contains four methyl groups as there is no absorption at 720cm-1. Diethyl ether is the name of the compound.
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