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    Detecting Organic Nitrogen with 1H-15N HMBC Spectra

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    Date
    2021
    Author
    Su, Haw-Lih
    Rajan, Rajeesha
    Hijji, Yousef Mohammad
    Ibrahim, Mohammad Ibrahim Ahmad
    Alsafran, Mohammed Hussain S A (1,3)
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    Abstract
    NMR spectroscopy has been the most important tool for organic chemistry research, providing detailed structure information. While 1H and 13C NMR spectra were frequently measured, 15N NMR spectra were relatively rare, even though nitrogen is commonly observed in organic molecules. This is due to the low gyromagnetic ratio and nature abundance. Usually 15N NMR spectra are observed when the sample is in very high concentration or the nitrogen is enriched with 15N isotope. HMBC is one of the 2D NMR techniques, measuring the through-bond correlations inside a molecule. 1H-15N HMBC actually collects a series of measurements of 1H NMR spectra with 15N information. Therefore, HMBC could get stronger signals than 15N signals and provide the opportunity for the indirect measurement of 15N signals.
    URI
    https://doi.org/10.29117/quarfe.2021.0038
    DOI/handle
    http://hdl.handle.net/10576/24305
    Collections
    • Central Laboratories Unit Research [‎83‎ items ]
    • Chemistry & Earth Sciences [‎429‎ items ]
    • Research of Agricultural Research Station [‎39‎ items ]
    • Theme 1: Energy and Environment [‎73‎ items ]

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