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anonymous

  • 4 years ago

im kinda confused about this structure.. need to draw it

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  1. anonymous
    • 4 years ago
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    |dw:1328808077918:dw|

  2. anonymous
    • 4 years ago
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    i know carbon a is sp3 hybridized so you dont show wedges and dashes but carbon b is sp3 hybridized why dont we show wedges and dashes for carbon b

  3. anonymous
    • 4 years ago
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    Generally we only show wedges and dashes they're necessary to resolve ambiguity. Because otherwise (1) they're a pain, an eyesore, and (2) the experienced chemist knows how the bonds are arranged already. In the case of your structure, which is hard to read, if carbon a is the top end of the double bond in the ring, this is sp2 hybridized, and all its bonds lie in the plane, including the bond to carbon b, which I think is the top leftmost carbon. Carbon b is certainly sp3 hybridizes, so if it were necessary to draw its 3 bonds to H (which in your structure are just implied) you could draw dashes and wedges. But you probably wouldn't, because a is not a stereocenter, so there is no chance the reader will make an incorrect assignment of which bond goes where. You'll note the same thing applies to the other carbons in the ring, those not part of the double bond, which are also sp3 hybridized. That ring is actually puckered, and if you wanted to show that clearly you could use dashes and wedges. But, again, you probably wouldn't, because it's a pain, and an experienced chemist already knows that the ring is puckered.

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