Wield the ¹3C NMR as your second-greatest weapon. How many unique signals do you see? What does this mean for symmetry? 13C NMR (100 MHz, CDC13) a = 191.9, 156.2, 134.6, 130.0, 127.1, 34.5, 23.6.
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).
![Wield the 13C NMR as your second-greatest weapon. How many unique
signals do you see? What does this mean for symmetry?
1³C NMR (100 MHz, CDC13) a = 191.9, 156.2, 134.6, 130.0, 127.1, 34.5,
23.6.
200
180
Source: AIST
CDS-00-276
12
11
Source: AIST
HSP-01-943
160
10
9
140
8
120
CHC13
7
100
ppm
Wielding the ¹H NMR as your greatest weapon, identify functional groups
and start drawing structures.
¹H NMR (CDCl3, 90 MHz) a = 9.96 (s, 1H); 7.80 (d, J = 8.4 Hz, 2H),
7.38 (d, J = 8.4 Hz, 2H), 2.97 (septet, J = 9.4 Hz, 1H), 1.28 (d, J = 9.4 Hz,
6H).
6
5
CDCl3
80
ppm
4
60
3
40
2
20
1
O
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