what are nucleophiles?
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A nucleophile is an ion, or molecule that donates a pair of electrons to form a new bond. If you've studied acids and bases, you may recognize that a nucleophile is also a Lewis base, an electron pair donor. Some nucleophiles have an unshared electron pair, such as the bromide ion or ammonia.
Nucleophiles with double or triple bonds can also donate one pair of electrons. Alkenes (C=C bonds), alkynes (C=C triple bonds) and carbonyl compounds (C=O bonds) can donate electrons.
Nucleophiles with double or triple bonds can also donate one pair of electrons. Alkenes (C=C bonds), alkynes (C=C triple bonds) and carbonyl compounds (C=O bonds) can donate electrons.
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A nucleophile is a chemical species that donates an electron pair to an electrophile to form a chemical bond in relation to a reaction. All molecules or ions with a free pair of electrons or at least one pi bond can act as nucleophiles. Because nucleophiles donate electrons, they are by definition Lewis bases.
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