Question

which technique is used in examine activated complex involved in biomolecular reactions​

Answer 1

Answer:

Bimolecular Reaction

Bimolecular reactions involving reactive co-ions can often be treated very simply by assuming that the co-ion, e.g. OH− in solutions of an anionic surfactant, remains in the aqueous region and there is no reaction in the micellar pseudophase.

From: Advances in Colloid and Interface Science, 2006

Oxidation

Jay K. Kochi, in Comprehensive Organic Synthesis, 1991

7.4.3.3 Chemistry of Organic Radical Anions

Electron attachment to the LUMO of an organic acceptor can produce a radical anion that is subject to ready unimolecular decomposition, as given by the following generic examples.76,77

7.4.3.3.1 Fragmentation

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Bimolecular reactions of radical anions are largely restricted to arene acceptors owing to their generally more persistent character. The ambivalence of arene radical anions generally relates to the reactivity towards acids, electrophiles and electron acceptors.

7.4.3.3.2 Protonation

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7.4.3.3.3 Electrophilic addition

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7.4.3.3.4 Electron transfer

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(See nucleophilic aromatic substitution (Srn) in Volume 4, Chapter 2.1)

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7.4.3.3.5 Dimerization/disproportionation

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Although it may appear that the collapse of the contact ion pair [RH⨥A⨪] with bond formation would frequently be the most favored pathway for its annihilation, only a few examples are presently available. These include the osmylation of arenes to be described in Section 7.4.4.8 (equation 24), as well as the following examples.

7.4.3.3.6 Csingle bondC bond formation78,79

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7.4.3.3.7 [3 + 2] cycloaddition80

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7.4.3.3.8 [4 + 2] cycloaddition81

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In each case the formation of the σ-bond(s) between RH⨥ and A⨪ must compete with back electron transfer.

Answer 2

Answer:

Explanation:

if Ea is the energy of activation then the rate of the reaction is given by : where, R ... 1) It fails to explain the chemical reactions involving complex molecules which are ... Ans. The stop flow technique is used to study the rates of fast reactions.

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