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Transcript of Limonene presentation
the ppm between 1 and 2 shows all carbon adjacent has C-H bonds
the ppm around 4.8 indicates the adjacent carbon has C=C with no hydrogen since it is a singlet
The protons present in the compound has 7 different environments
The C NMR spectrum for limonene From the carbon spectrum above we can tell that:
The ppm between 0-50 shows there are C-C bond
The ppm at 120-160 shows there is the cyclic benzene ring image of limonene source:http://en.wikipedia.org/wiki/File:Limonene-2D-skeletal.svg Limonene is a colourless liquid hydrocarbon classified as a cyclic terpene. The more common D isomer possesses a strong smell of oranges.It is used in chemical synthesis as a precursor to carvone and as a renewably based solvent in cleaning products. From the mass spectrum above we can see that the m/z value of overall compound is around 136.
Final structure of limonene after the analysis Evidences
From the infrared spectrum , there are only C-H bonds
From the mass spectrum the final m/z value adds up to 136 since the molecular formula is C10H16
From the H NMR spectrum, the fact that C=C involved
From the C NMR the benzene ring present in limonene Thank you for watching Sources:http://en.wikipedia.org/wiki/Limonene