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Identify two organic compounds from the Mass Spectra, NMR, IR and information provided, and to determine its structure.
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Rhiannon Edwards 220380 Spectral Analysis of 'Unknown' Organic Substances Objectives The objective of this experiment is to identify two organic compounds from the Mass Spectra, NMR, IR and information provided, and to determine its structure. Summary From the spectra and information provided with Unknown 4, the compound and structure was identified as: 4-Hydroxybenzaldehyde From the spectra and information provided with Unknown 13, the compound and structure was found to be: 1-Bromobutane Results Unknown 4: Molecular Formula Atom C H O % Mr 68.70 12.01 5.10 1.008 26.20 16.00 = 5.7 5.1 1.6 Divide by smallest 3.6 3.2 1.0 X 2 7.2 6.4 2.0 No. of Atoms 7 6 2 m/z = 122 Double Bond Equivalents 16 - 6 = 10 10 = 5 Double bond equivalents 2 From the previous information the compound could possibly contain a Benzene ring and another double bond, possibly involving one of the oxygens. Melting Point The melting point was measured as 117 degrees. Mass Spectra * 122 - This is the mass peak. * 121 - The loss of hydrogen from the 122 peak, this shows this easy loss of hydrogen that the compound could possibly be an aldehyde. * 93 - This could be the...
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