# Is resonance always stabilizing

Does resonance always stabilize a molecule or can resonance effects destabilize molecules?

The only example I can think of in which resonance (more accurately, conjugation) destabilizes molecules is in the cases of anti-aromatic compounds. Is this a valid example, and are there any more such examples?

• If resonance is not stabilizing, then why would it occur? – LDC3 Nov 1 '14 at 18:43
• Couldn't you say that about a lot of things? If anti-aromatic compounds were unstable, why do they exist? I think the answer to your question lies with meta-stability. – Dissenter Nov 1 '14 at 18:53
• What I was trying to point out is stated by Ron, Resonance only occurs when the result is beneficial. Anti-aromatic compounds exist since the molecular bonding releases energy from the state of individual atoms. – LDC3 Nov 1 '14 at 19:06