Lewis Acidsare substances that can accept an electron pair. Common examples include metal cations (e.g., Al3?, Fe2?), electron-deficient molecules (e.g., BF?, AlCl?), and some transition metal complexes. Lewis Basesare substances that can donate an electron pair. Examples include molecules with lone pairs of electrons (e.g., NH?, H?O), anions (e.g., OH?, CN?), and even some organic compounds with electron-rich moieties.
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3,5-difluoro-4-(trifluoromethyl)pyridine
(2-(naphthalen-2-yl)phenyl)methanol
