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Nikita Sharma posted an Question
July 21, 2022 • 11:26 am 30 points
  • CSIR NET
  • Chemical Sciences

Explain why it is that the 3'p nmr spectrum of phosphine consists of a 1: 3: 3: 1 quartet, whereas the 'h nmr spectrums consists of a 1:1 doublet.

Explain why it is that the 3'p NMR spectrum of phosphine consists of a 1: 3: 3: 1 quartet, whereas the 'H NMR spectrums consists of a 1:1 doublet.

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    Shabir ahmad bhat Best Answer

    in P NMR, the phosphorous signal will be splitted by three equivalent protons having nuclear spin = 1/2 into quartet. the intensity of quartet will be as per pascal triangle as 1:3:3:1. However, in case of H NMR, the signal of three equivalent protons will be splitted by single Phosphorus atom with nuclear spin = 1/2 into doublet. the intensity Will be 1:1.

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