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The ir spectra of maleic anhydride revealed strong carbonyl stretching around 1700 cm-1 due to the two carbonyl groups, C-O stretching around 1200 cm-1 and also C=C stretching at 1635.84 cm-1. Anthracene showed strong aromatic C-H stretching at 736.99 cm-1, weak =c-h stretching above 3000 cm-1 and strong C-C stretching between 1447.86 and 1620 cm-1.
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The IR spectra of maleic anhydride and anthracene are consistent with their respective structures. Maleic anhydride shows strong carbonyl stretching around 1700 cm-1, indicating the presence of two carbonyl groups. The C-O stretching around 1200 cm-1 is also expected. The C=C stretching at 1635.84 cm-1 confirms the presence of a double bond within the molecule. Anthracene, being an aromatic compound, exhibits strong aromatic C-H stretching at 736.99 cm-1. The weak =C-H stretching above 3000 cm-1 indicates the presence of C-H bonds in the aromatic ring. The strong C-C stretching between 1447.86 and 1620 cm-1 is characteristic of aromatic ring vibrations.
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