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  2. Mesitylene - Wikipedia

    en.wikipedia.org/wiki/Mesitylene

    Mesitylene or 1,3,5-trimethylbenzene is a derivative of benzene with three methyl ... formula C 6 H 2 Me 3 and is found in ... 6.8 ppm in the 1 H NMR ...

  3. Proton nuclear magnetic resonance - Wikipedia

    en.wikipedia.org/wiki/Proton_nuclear_magnetic...

    Proton nuclear magnetic resonance (proton NMR, hydrogen-1 NMR, or 1 H NMR) is the application of nuclear magnetic resonance in NMR spectroscopy with respect to hydrogen-1 nuclei within the molecules of a substance, in order to determine the structure of its molecules. [1]

  4. Aromatic ring current - Wikipedia

    en.wikipedia.org/wiki/Aromatic_ring_current

    An aromatic ring current is an effect observed in aromatic molecules such as benzene and naphthalene. If a magnetic field is directed perpendicular to the plane of the aromatic system, a ring current is induced in the delocalized π electrons of the aromatic ring. [1]

  5. Magnetic inequivalence - Wikipedia

    en.wikipedia.org/wiki/Magnetic_inequivalence

    A classic example is the 1 H-NMR spectrum of 1,1-difluoroethylene. [5] The single 1 H-NMR signal is made complex by the 2 J H-H and two different 3 J H-F splittings. The 19 F-NMR spectrum will look identical. The other two difluoroethylene isomers give similarly complex spectra. [6]

  6. Hexamethylbenzene - Wikipedia

    en.wikipedia.org/wiki/Hexamethylbenzene

    Hexamethylbenzene, also known as mellitene, is a hydrocarbon with the molecular formula C 12 H 18 and the condensed structural formula C 6 (CH 3) 6.It is an aromatic compound and a derivative of benzene, where benzene's six hydrogen atoms have each been replaced by a methyl group.

  7. Simple aromatic ring - Wikipedia

    en.wikipedia.org/wiki/Simple_aromatic_ring

    Many simple aromatic rings have trivial names. They are usually found as substructures of more complex molecules ("substituted aromatics"). Typical simple aromatic compounds are benzene, indole, and pyridine. [1] [2] Simple aromatic rings can be heterocyclic if they contain non-carbon ring atoms, for example, oxygen, nitrogen, or sulfur.

  8. Durene - Wikipedia

    en.wikipedia.org/wiki/Durene

    Durene, or 1,2,4,5-tetramethylbenzene, is an organic compound with the formula C 6 H 2 (CH 3) 4. It is a colourless solid with a sweet odor. The compound is classified as an alkylbenzene. It is one of three isomers of tetramethylbenzene, the other two being prehnitene (1,2,3,4-tetramethylbenzene) and isodurene (1,2,3,5-tetramethylbenzene ...

  9. Arene substitution pattern - Wikipedia

    en.wikipedia.org/wiki/Arene_substitution_pattern

    In meta-substitution the substituents occupy positions 1 and 3 (corresponding to R and meta in the diagram). In para-substitution, the substituents occupy the opposite ends (positions 1 and 4, corresponding to R and para in the diagram). The toluidines serve as an example for these three types of substitution.