Most alkyl bromides ile water-insoluble liquids. Yet, when 7-bromo- 1,3,5-cycloheptatriene was first isolated, its high melting point of 203oC and its water solubility led its discoverers to comment that it behaves more like a salt. Explain the salt-like behavior of this compound.

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H Br 7-bromo-1,3,5-cycloheptatriene (tropylium bromide)