“transition state”的概念、定义、翻译、参考文献-科学参考

transition state

Chemistry

The association of atoms of highest energy formed during a chemical reaction. The transition state can be regarded as a short-lived intermediate that breaks down to give the products. For example, in a S_N2 substitution reaction, one atom or group approaches the molecule as the other leaves. The transition state is an intermediate state in which both attacking and leaving groups are partly bound to the molecule, e.g.
$B + RA \to B — R — A \to BR + A$
In the theory of reaction rates, the reactants are assumed to be in equilibrium with this activated complex, which decomposes to the products.

单词	transition state
释义	transition state Chemistry The association of atoms of highest energy formed during a chemical reaction. The transition state can be regarded as a short-lived intermediate that breaks down to give the products. For example, in a S_N2 substitution reaction, one atom or group approaches the molecule as the other leaves. The transition state is an intermediate state in which both attacking and leaving groups are partly bound to the molecule, e.g. $B + RA \to B — R — A \to BR + A$ In the theory of reaction rates, the reactants are assumed to be in equilibrium with this activated complex, which decomposes to the products.
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