Question

For diethyl ether, CH3CH2OCH2CH3, the multiplicity for the methyl protons is , and the multiplicity for the methylene protons is .

Answer 1

The structure of diett yl ether 3 IR os I-U-I - 0- IV-I - I- The oboue molecule has a plane of Symmetry / so the two CH3 groups and tune'CH, ģ neups both are equivalent. - CH₂ groups gilus a 4H signal at about $3.4 - CH3 groups guns a fH signals at about 81.2 The multiplicity of the peak is given by nti sulei 1. Multiplicity of -CH, É 3+1 = 4 quarter . Multiplicity of -CH₂ s 2 +1 = 3 (triplet) Thus, methylenet CH₂) protons gines quartet I because of neighbouring 34 and methyl (CH3) protons gives triplet because of I neighbouring 2h. i concluding