Which one of the following statements is not true? If the two protons in a CH2 group are diastereotopic, they will couple with each other. O Helium-4 is a magnetically inactive nucleus. O If you cool cyclohexane to a low enough temperature, you can distinguish between the axial and equatorial protons in NMR spectroscopy. The magnet in a 400 MHz NMR spectrometer is stronger than the magnet in a 500 MHz spectrometer. You would observe carbon-carbon coupling in the 13C NMR spectrum of propane if each of the carbon atoms were carbon- 13.
Which one of the following statements is not true? If the two protons in a CH2 group are diastereotopic, they will couple with each other. O Helium-4 is a magnetically inactive nucleus. O If you cool cyclohexane to a low enough temperature, you can distinguish between the axial and equatorial protons in NMR spectroscopy. The magnet in a 400 MHz NMR spectrometer is stronger than the magnet in a 500 MHz spectrometer. You would observe carbon-carbon coupling in the 13C NMR spectrum of propane if each of the carbon atoms were carbon- 13.
Chapter13: Structure Determination: Nuclear Magnetic Resonance Spectroscopy
Section13.1: Nuclear Magnetic Resonance Spectroscopy
Problem 2P
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