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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. is it correct?
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Yes, the provided information about the IR spectra of maleic anhydride and anthracene is generally correct. Here's a breakdown:
Maleic Anhydride:
1700 cm-1: Strong carbonyl (C=O) stretching is expected due to the two carbonyl groups in the anhydride ring.
1200 cm-1: C-O stretching is also expected in the anhydride ring.
1635.84 cm-1: The C=C stretching frequency is consistent with the double bond within the anhydride ring.
Anthracene:
736.99 cm-1: Strong aromatic C-H out-of-plane bending is typical for aromatic compounds.
Above 3000 cm-1: Weak =C-H stretching is characteristic of aromatic C-H bonds.
1447.86 to 1620 cm-1: Strong C-C stretching is expected within the aromatic rings of anthracene.
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