11) The 'H NMR spectrum of an unknown compound shows a sharp singlet at 9.8 ppm. Which of the following would produce a 'H NMR spectrum that would also feature a singlet in this location? HO. d) a) H. b) ОН С)
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).
(A structure featuring a benzene ring with an aldehyde group attached.)
b) 
(A structure similar to option a, but with an additional hydroxyl group.)
c) 
(A structure featuring a benzene ring with an alcohol group attached at the end of the chain.)
d) 
(A structure featuring a benzene ring with a triple bond at the end of the chain, characteristic of a phenylacetylene compound.)
**Explanation**: Each of these chemical structures is illustrated with functional groups that can affect the NMR spectrum. The singlet at 9.8 ppm typically indicates the presence of an aldehyde proton, so the correct answer is the structure that includes an aldehyde group connected to a benzene ring (option a).](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F84066073-0236-4792-806f-3709c1dab065%2Ff1427798-7ab2-4d3b-9898-5c7f93fa34ed%2Fflzni1q_processed.jpeg&w=3840&q=75)
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
