High MW MAOs, such as the recently isolated sheet 26,9, primarily contain unreactive type L, featuring four-coordinate (4-C) aluminum centers bound to three oxygen atoms and one terminal methyl group. Reactive aluminum sites in such structures are predominantly located at sheet edges, with their reactivity patterns influenced by the overall MAO morphology. In contrast, our study focuses on lower MW MAO species (n = 1-8), where the high edge-to-bulk ratio results in a predominance of potentially reactive aluminum sites.