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Mike Vinci 2B
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Postby Mike Vinci 2B » Mon Dec 04, 2017 12:41 pm

In regards to the most recent test we were given, how can you identify delocalization pi bonding? I've researched that delocalized pi bonds can move more freely about a nuclei or atom, but I'm not sure how to identify it on a structure like paroxetine?

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Re: Delocalization

Postby Chem_Mod » Mon Dec 04, 2017 2:12 pm

This has to do with "conjugated" (connected) p orbitals on adjacent atoms which increases the orbital wavelength of the circulating pi electrons and lowers their E (makes them more stable). This makes our molecule more stable and allows us to draw more resonance structures based on where the pi electrons are shuffled (in pairs); the more resonance structures you can draw, the more stable the molecule usually is. This topic is very crucial to chem 14 C.

Johann Park 2B
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Re: Delocalization

Postby Johann Park 2B » Mon Dec 04, 2017 2:17 pm

Identifying resonance in a structure is a way to find delocalized pi bonds in a molecule. In resonance structures, electrons are able to move to stabilize the molecule -> this movement is delocalization.

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Re: Delocalization

Postby 804899546 » Sat Dec 09, 2017 9:45 pm

Do delocalized pi bonds only occur in a molecule with a 6-carbon ring, or can they occur any time there are overlapping p orbitals?

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