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  2. Vinyl group - Wikipedia

    en.wikipedia.org/wiki/Vinyl_group

    On a carbon skeleton, sp 2-hybridized carbons or positions are often called vinylic. Allyls , acrylates and styrenics contain vinyl groups. (A styrenic crosslinker with two vinyl groups is called divinyl benzene .)

  3. α,β-Unsaturated carbonyl compound - Wikipedia

    en.wikipedia.org/wiki/Α,β-Unsaturated_carbonyl...

    α,β-Unsaturated carbonyl compounds featuring a carbonyl conjugated to an alkene that is terminal, or vinylic, contain the acryloyl group (H 2 C=CH−C(=O)−); it is the acyl group derived from acrylic acid. The preferred IUPAC name for the group is prop-2-enoyl, and it is also known as acrylyl or simply (and incorrectly) as acryl. Compounds ...

  4. Visual snow syndrome - Wikipedia

    en.wikipedia.org/wiki/Visual_snow_syndrome

    This is why in dim light we often see the world blurred and grainy, without clear contours. While cones (which are responsible for color perception and detail) are activated in brighter light, the rods provide vision in low light, but with a loss of precision.

  5. Vinylogy - Wikipedia

    en.wikipedia.org/wiki/Vinylogy

    Delocalization of negative charge in a generic carboxylate anion, derived from an organic carboxylic acid (cf. acetic acid), and the corresponding vinylogous carboxylate anion (the "vinylog/vinylogue" of the carboxylate anion), where a vinyl group now separates the charged oxygen from the carbonyl (C=O) group.

  6. Vinyl cation - Wikipedia

    en.wikipedia.org/wiki/Vinyl_cation

    The vinyl cation is a carbocation with the positive charge on an alkene carbon. Its empirical formula of the parent ion is C 2 H + 3.Vinyl cation are invoked as reactive intermediates in solvolysis of vinyl halides, [1] [2] as well as electrophilic addition to alkynes and allenes.

  7. The best sleep masks of 2025, according to sleep scientists - AOL

    www.aol.com/lifestyle/best-sleep-masks-195532296...

    Saatva's weighted eye mask takes a two-pronged approach to improving sleep — blocking light and deep pressure stimulation. At $75, this one could also make our list as the best luxury sleep mask ...

  8. Vinyl iodide functional group - Wikipedia

    en.wikipedia.org/wiki/Vinyl_iodide_functional_group

    In S N 1 case, dissociation is difficult because of the strengthened C-I bond and loss of the iodide will generate an unstable carbocation(see figure 1c) [2] Figure 1. In cross-coupling reactions, typically vinyl iodides react faster and under more mild conditions than vinyl chloride and vinyl bromide. The order of reactivity is based on the ...

  9. Methyl vinyl ketone - Wikipedia

    en.wikipedia.org/wiki/Methyl_vinyl_ketone

    Methyl vinyl ketone (MVK, IUPAC name: butenone) is the organic compound with the formula CH 3 C(O)CH=CH 2.It is a reactive compound classified as an enone, in fact the simplest example thereof.