Posts Tagged ‘Substituent’

Long C=C bonds.

Thursday, December 1st, 2016
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Following on from a search for long C-C bonds, here is the same repeated for C=C double bonds.

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Mesomeric resonance in substituted benzenes: a crystallographic reality check.

Wednesday, August 26th, 2015
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Previously, I showed how conjugation in dienes and diaryls can be visualised by inspecting bond lengths as a function of torsions. Here is another illustration, this time of the mesomeric resonance on a benzene ring induced by an electron donating substituent (an amino group) or an electron withdrawing substituent (cyano).

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