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1. Carbocation Analogues: Nitrenium ions?
2. Evidence to support the existence of nitrenium ions
3. Carbocation Analogues Oxenium ions?
4. Relevant Facts (I) Evidence against a free radical pathway
5. Relevant Facts (II) Evidence against a concerted pathway
6. A plausible explanation involving the intermediacy of Oxenium ions
7. A plausible explanation involving the intermediacy of Oxenium ions cont’d.