bimolecular reaction

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Related to bimolecular reaction: molecularity

bimolecular reaction (E, SN2)2

a reaction in which more than one molecule is involved in the slow step. An enzyme-catalyzed reaction usually consists of a series of bimolecular reactions. It may follow second-order, or more complicated, chemical kinetics.
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One bimolecular reaction is chosen for analysis, as seen in Equation 5:
The fate of this ion was found to depend upon the nucleophilicity of the counterion: it persisted with counterion=triflate, but underwent bimolecular reaction with the pivalate ion.
Figure 8 shows that hydroxyl radicals are indeed formed from the primary bimolecular reaction.