Organic ChemistryMain MenuLecture 1: Introduction to Molecular OrbitalsLecture 10: Intermolecular Forces and Intro to ReactivityLecture 11: Alkenes as Nucleophiles ILectures 12 and 13: Alkenes II & IIILecture 14: Benzenes as Nucleophiles ILecture 15 objectives and skillsLecture 2: Molecular Orbitals in Organic StructuresLecture 3: Molecular Orbitals and ResonanceLecture 4: Molecular Orbitals and AromaticityLecture 5: Nomenclature and IR SpectroscopyLecture 6: Stereochemistry ILecture 7: Stereochemistry IILecture 8: Newman and Fisher ProjectionsLecture 9: Conformations and Cyclohexane RingsJulio Terra2fb22914f73f9e5a767bf7fb83987dca0e153e4a
12020-02-01T13:23:53-08:00SOLUTION 4.31plain2020-02-01T13:23:54-08:00Both molecules are technically considered anti-aromatic, due to the presence of an anti-aromatic ring. The main difference between pentalene and heptalene, is that the anti-aromatic ring in heptalene has more flexibility to move out of planarity, thus reducing it to non-aromatic (and increasing its stability relative to pentalene) and allowing it to behave more like a regular alkene.
