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Question
In an Aprotic solvent, which relative ordering best describes the nucleophilicity of the halide ions?
In an Aprotic solvent, which relative ordering best describes the nucleophilicity of the halide ions?
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Solution
The correct option is D Iodide< Bromide< Chloride< Flouride
In an aprotic solvent, the increasing ordering for the nucleophilicity of the halide ions
is iodide< bromide< chloride< flouride .
A polar aprotic solvent does not hydrogen bond to nucleophiles to a significant extent, meaning that the nucleophiles have greater freedom in solution. Under these conditions, nucleophilicity correlates well with basicity and fluoride ion, being the most unstable of the halide ions, reacts fastest with electrophiles.
In an aprotic solvent, the increasing ordering for the nucleophilicity of the halide ions
is iodide< bromide< chloride< flouride .
A polar aprotic solvent does not hydrogen bond to nucleophiles to a significant extent, meaning that the nucleophiles have greater freedom in solution. Under these conditions, nucleophilicity correlates well with basicity and fluoride ion, being the most unstable of the halide ions, reacts fastest with electrophiles.
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