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  2. Antiaromaticity - Wikipedia

    en.wikipedia.org/wiki/Antiaromaticity

    In this section, only examples of antiaromatic compounds which are non-disputable are included. Pentalene is an antiaromatic compound which has been well-studied both experimentally and computationally for decades. It is dicyclic, planar and has eight π-electrons, fulfilling the IUPAC definition of antiaromaticity.

  3. Cyclobutadiene - Wikipedia

    en.wikipedia.org/wiki/Cyclobutadiene

    The compound is the prototypical antiaromatic hydrocarbon with 4 pi electrons (or π electrons). It is the smallest [n]-annulene ([4]-annulene).Its rectangular structure is the result of a pseudo [3] - (or second order) Jahn–Teller effect, which distorts the molecule and lowers its symmetry, converting the triplet to a singlet ground state. [4]

  4. Thiepine - Wikipedia

    en.wikipedia.org/wiki/Thiepine

    In organic chemistry, thiepine (or thiepin) is an unsaturated seven-membered heterocyclic compound, with six carbon atoms and one sulfur atom. The parent compound, C 6 H 6 S is unstable and is predicted to be antiaromatic.

  5. Aromaticity - Wikipedia

    en.wikipedia.org/wiki/Aromaticity

    Two different resonance forms of benzene (top) combine to produce an average structure (bottom). In organic chemistry, aromaticity is a chemical property describing the way in which a conjugated ring of unsaturated bonds, lone pairs, or empty orbitals exhibits a stabilization stronger than would be expected from conjugation alone.

  6. Category:Antiaromatic compounds - Wikipedia

    en.wikipedia.org/.../Category:Antiaromatic_compounds

    Pages in category "Antiaromatic compounds" The following 13 pages are in this category, out of 13 total. This list may not reflect recent changes. ...

  7. Aromatic compound - Wikipedia

    en.wikipedia.org/wiki/Aromatic_compound

    Aromatic compounds or arenes are organic compounds "with a chemistry typified by benzene" and "cyclically conjugated." [1] The word "aromatic" originates from the past grouping of molecules based on odor, before their general chemical properties were understood. The current definition of aromatic compounds does not have any relation to their odor.

  8. The following article contains mild spoilers from the Season 2 premiere of Unstable, now streaming on Netflix. For a light-hearted workplace comedy, the first season of Netflix’s Unstable left ...

  9. 1,2-Dioxin - Wikipedia

    en.wikipedia.org/wiki/1,2-Dioxin

    1,2-Dioxin is a heterocyclic, organic, antiaromatic [1] compound with the chemical formula C 4 H 4 O 2. ... 1,2-dioxin is very unstable and has not been isolated.