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Analysis of carbon – 13 spectra. Analyse carbon-13 NMR spectra to make predictions about possible structures for an unknown compound. Starter . What are the two key pieces of information obtained from a carbon – 13 NMR spectrum?

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## Analysis of carbon – 13 spectra

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**Analysis of carbon – 13 spectra**Analyse carbon-13 NMR spectra to make predictions about possible structures for an unknown compound.**Starter**• What are the two key pieces of information obtained from a carbon – 13 NMR spectrum? • The number of different carbon environments (i.e. the number of peaks) • The types of environment (i.e. The chemical shift)**Making predictions**• Used to analyse unknown compounds and confirm suspected organic structures**Identify the number of carbon environments in:**• Ethanol (C2H5OH) • But-3-en-2-one (CH2CHCOCH3) • 1-methylethyl propanoate (CH3CH2COOCH(CH3)2) • Draw the isomers of the alcohol C4H10O. How many different carbon environments do they have? • Propanal • Propanone

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