Chemistry · Organic Spectroscopy
Arrange the following functional groups/compounds in increasing order of their infrared (IR) absorption wavenumber (νmax) for the carbonyl (C=O) stretch: (i) 2-Cyclohexenone (Conjugated ketone) (ii) Cyclobutanone (iii) Cyclopentanone (iv) Cyclohexanone
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- 1(iv) < (iii) < (ii) < (i)
- 2(i) < (ii) < (iii) < (iv)
- 3(i) < (iii) < (ii) < (iv)
- 4(i) < (iv) < (iii) < (ii)✓
Correct answer
(i) < (iv) < (iii) < (ii)
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