The view is from above the planar molecule so only

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Unformatted text preview: d by the question, the first (the guanidinium ion) is a very stable cation because of conjugation. The charge is delocalised onto all three nitrogen atoms as the first three structures show. Each nitrogen has an equal positive charge so our fourth diagram shows one third + on each. The third diagram shows the p- orbitals on the central carbon and the three nitrogens that all overlap to give the conjugated system. The view is from above the planar molecule so only a circle can be seen. In the lowest MO (...
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This document was uploaded on 02/10/2014.

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