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  2. 2,3-Dimethylbutane - Wikipedia

    en.wikipedia.org/wiki/2,3-Dimethylbutane

    Density: 662 mg mL −1: Melting point: −136 to −124 °C; −213 to −191 °F; 137 to 149 K ... 2,3-Dimethylbutane is an isomer of hexane. It has the chemical ...

  3. Dimethylbutadiene - Wikipedia

    en.wikipedia.org/wiki/Dimethylbutadiene

    Dimethylbutadiene, formally referred to as 2,3-dimethyl-1,3-butadiene, is an organic compound with the formula (CH 3) 2 C 4 H 4. It is colorless liquid which served an important role in the early history of synthetic rubber. It is now a specialty reagent.

  4. Gauche effect - Wikipedia

    en.wikipedia.org/wiki/Gauche_effect

    The gauche effect is very sensitive to solvent effects, due to the large difference in polarity between the two conformers.For example, 2,3-dinitro-2,3-dimethylbutane, which in the solid state exists only in the gauche conformation, prefers the gauche conformer in benzene solution by a ratio of 79:21, but in carbon tetrachloride, it prefers the anti conformer by a ratio of 58:42. [9]

  5. Anti-periplanar - Wikipedia

    en.wikipedia.org/wiki/Anti-periplanar

    In Figure 6, 2-chloro-2,3-dimethylbutane is stabilized through hyperconjugation from electron donation from σ C-H into σ* C-Cl, but both C–H and C–Cl bonds are weakened. A molecular orbital diagram shows that the mixing of σ C–H and σ* C–Cl in 2-chloro-2,3-dimethylbutane lowers the energy of both the orbitals (Figure 7).

  6. 2,3-Dimethylpentane - Wikipedia

    en.wikipedia.org/wiki/2,3-Dimethylpentane

    The optical center is the middle carbon of the pentane backbone, which is connected to one hydrogen atom, one methyl group, one ethyl group – C 2 H 5, and one isopropyl group – CH(CH 3) 2. The two enantiomers are denoted (3R)-2,3-dimethylpentane and (3S)-2,3-dimethylpentane (the other simplest chiral alkane is its structural isomer 3 ...

  7. Newman projection - Wikipedia

    en.wikipedia.org/wiki/Newman_projection

    A Newman projection is a drawing that helps visualize the 3-dimensional structure of a molecule. [1] This projection most commonly sights down a carbon-carbon bond, making it a very useful way to visualize the stereochemistry of alkanes.

  8. 7 Tips for Avoiding Holiday Weight Gain (& How to Get Ahead ...

    www.aol.com/7-tips-avoiding-holiday-weight...

    2. Enjoy Your Favorite Holiday Treats and Skip the Rest. You don’t have to avoid your holiday favorites. But we’re sure you have a few meals or traditions you enjoy more than others.

  9. 2,2-Dimethylbutane - Wikipedia

    en.wikipedia.org/wiki/2,2-Dimethylbutane

    2,2-Dimethylbutane, trivially known as neohexane at William Odling's 1876 suggestion, [4] is an organic compound with formula C 6 H 14 or (H 3 C-) 3-C-CH 2-CH 3. It is therefore an alkane , indeed the most compact and branched of the hexane isomers — the only one with a quaternary carbon and a butane (C 4 ) backbone.