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  2. Clar's rule - Wikipedia

    en.wikipedia.org/wiki/Clar's_rule

    Clar's rule states that for a benzenoid polycyclic aromatic hydrocarbon (i.e. one with only hexagonal rings), the resonance structure with the largest number of disjoint aromatic π-sextets is the most important to characterize its chemical and physical properties. Such a resonance structure is called a Clar structure. In other words, a ...

  3. Phenanthrene - Wikipedia

    en.wikipedia.org/wiki/Phenanthrene

    Phenanthrene is used to make dyes, plastics, pesticides, explosives, and drugs. It has also been used to make bile acids, cholesterol and steroids. [3] Phenanthrene occurs naturally and also is a man-made chemical. Commonly, humans are exposed to phenanthrene through inhalation of cigarette smoke, but there are many routes of exposure.

  4. Resonance (chemistry) - Wikipedia

    en.wikipedia.org/wiki/Resonance_(chemistry)

    Contributing structures of the carbonate ion. In chemistry, resonance, also called mesomerism, is a way of describing bonding in certain molecules or polyatomic ions by the combination of several contributing structures (or forms, [1] also variously known as resonance structures or canonical structures) into a resonance hybrid (or hybrid structure) in valence bond theory.

  5. Mesomeric effect - Wikipedia

    en.wikipedia.org/wiki/Mesomeric_effect

    In chemistry, the mesomeric effect (or resonance effect) is a property of substituents or functional groups in a chemical compound. It is defined as the polarity produced in the molecule by the interaction of two pi bonds or between a pi bond and lone pair of electrons present on an adjacent atom. [ 1 ]

  6. Phenanthrenequinone - Wikipedia

    en.wikipedia.org/wiki/Phenanthrenequinone

    It has been prepared by oxidation of phenanthrene with chromic acid. [3] It is used as an artificial mediator for electron acceptor/donor in Mo/W containing formate dehydrogenase reduction of carbon dioxide to formate and vice versa. It is a better electron acceptor than the natural nicotinamide adenine dinucleotide (NAD +).

  7. Woman Praised ‘Incredible’ Ex-Husband amid Their Divorce in ...

    www.aol.com/lifestyle/woman-praised-incredible...

    A husband and wife who were in the process of getting divorced have died in an alleged murder-suicide in Mississippi, according to reports. Police were called in after other family members ...

  8. When it comes to managing mild pain at home, there’s a strong probability you’ve already got a few types of OTC anti-inflammatories stocked in your medicine cabinet.

  9. When does 'No Good Deed' come out? How to watch Ray ... - AOL

    www.aol.com/does-no-good-deed-come-200044366.html

    Featuring Lisa Kudrow and Ray Romano, Netflix's new dark comedy "No Good Deed" is "about the highs and lows of searching for a safe, happy home."