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The tropones and tropolones are intriguing series of compounds combining the properties of non-benzenoid aromatic and unsaturated compounds. In some instances tropone manifests itself as a ketone, while tropolone behaves as a vinylog of a carboxyl. Tropolone derivatives are found in wood and essential oils of the Cypress family of plants. They exhibit an antimitotic effect, possess bacteriostatic, bactericidal and antifungal activity, and serve as antibiotics,. The tropolones are possible intermediates of alkaloids biogenesis. Liquid crystals, ionophores, J-aggregated dyes and other advanced materials based on troponoids are known.

Use of semiempirical quantum chemical approaches in computation of molecular dipole moments of tropones and tropolones