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Question

The structure of thiophene is shown below. It is drawn in such a way that each corner represents a carbon atom and the hydrogens are implicit.

Chemical structure of thiophene, a five-membered ring with sulfur and carbon atoms.

Which of the following statement explains why the C–C–C bond angles in benzene are much larger than those in thiophene?

Accepted Answer

The carbon atoms adopt smaller angles in a five-membered compared to a six-membered ring.

Answer

Thiopene does not exhibit resonance while benzene has resonance structures.

Answer

The carbon atoms in thiophene have different hybridization from those in benzene.