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The dianion $\mathrm{C}_{8} \mathrm{H}_{6}^{2-}$, which corresponds to pentalene, has been prepared and appears to be reasonably stable. Why may the dianon be more stable than pentalene itself? (See Section 21-9B.)
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Pentalene is a hydrocarbon with a structure consisting of two fused five-membered rings, with each carbon atom bonded to two other carbons and one hydrogen atom. It has a total of 8 π-electrons. Show more…
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