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The nucleophilic substitution of RR'R''SiX (R, R', R" = alkyl groups) by a nucleophile Y gives the product RR'R"SiY. Among the following,
A. Silylium cation is formed during the reaction.
B. It is a second-order reaction.
C. The cleavage of the Si-X bond is not the rate-determining step.
D. The product always shows an inversion of configuration.
Identify the correct statements.
A. Silylium cation is formed during the reaction.
B. It is a second-order reaction.
C. The cleavage of the Si-X bond is not the rate-determining step.
D. The product always shows an inversion of configuration.
Identify the correct statements.
- a)B and C only
- b)A and B only
- c)C and D only
- d)B, C, and D only
Correct answer is option 'A'. Can you explain this answer?
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The nucleophilic substitution of RRRSiX (R, R, R" = alkyl groups)...
- The nucleophilic substitution of RR'R''SiX (R, R', R'' = alkyl groups) by a nucleophile Y typically proceeds through a mechanism known as the SN2 reaction.
- In this mechanism, a nucleophile (Y) attacks the silicon atom, leading to the formation of a new Si-Y bond and the cleavage of the Si-X bond. Let's analyze each statement to determine which ones are correct:
A. Silylium cation is formed during the reaction.
- This statement is not correct. In SN2 reactions involving silicon compounds, silylium cations (SiR3+) are not typically formed.
- The reaction proceeds via a concerted mechanism in which the nucleophile Y attacks the silicon atom while the leaving group X is displaced, without the formation of a stable silylium cation.
B. It is a second-order reaction.
- This statement is correct. The SN2 reaction is indeed a second-order reaction because the rate of the reaction depends on the concentration of both the nucleophile (Y) and the silicon compound (RR'R''SiX).
C. The cleavage of the Si-X bond is not the rate-determining step.
- This statement is correct. In SN2 reactions, the rate-determining step is the formation of the transition state in which the nucleophile Y attacks the silicon atom while the leaving group X is being displaced.
- This step involves the simultaneous breaking of the Si-X bond and the formation of the Si-Y bond. The transition state has a high energy barrier, making it the slowest step in the reaction, and therefore, it is the rate-determining step.
D. The product always shows an inversion of configuration.
- This statement is not necessarily correct. In SN2 reactions, the stereochemistry of the product depends on the configuration of the starting material. Specifically, the nucleophile Y attacks from the side opposite to the leaving group X (anti-addition).
- This inversion of configuration is observed when the starting material has a chiral center at the silicon atom (i.e., RR'R''SiX is chiral). However, if the silicon compound is not chiral (achiral), there may not be a clear inversion of configuration.
In summary, statements B and C are correct. The SN2 reaction is second-order, and the rate-determining step involves the formation of the transition state where the Si-X bond cleavage and Si-Y bond formation occur simultaneously.
Statement D is not always correct, as the inversion of configuration depends on the chirality of the starting material. Statement A is not correct because silylium cations are not typically formed in SN2 reactions involving silicon compounds.
Hence, the correct statements are B and C only.
Statement D is not always correct, as the inversion of configuration depends on the chirality of the starting material. Statement A is not correct because silylium cations are not typically formed in SN2 reactions involving silicon compounds.
Hence, the correct statements are B and C only.
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The nucleophilic substitution of RRRSiX (R, R, R" = alkyl groups) by a nucleophile Y gives the product RRR"SiY. Among the following,A. Silylium cation is formed during the reaction.B. It is a second-order reaction.C. The cleavage of the Si-X bond is not the rate-determining step.D. The product always shows an inversion of configuration.Identify the correct statements.a)B and C onlyb)A and B onlyc)C and D onlyd)B, C, and D onlyCorrect answer is option 'A'. Can you explain this answer?
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The nucleophilic substitution of RRRSiX (R, R, R" = alkyl groups) by a nucleophile Y gives the product RRR"SiY. Among the following,A. Silylium cation is formed during the reaction.B. It is a second-order reaction.C. The cleavage of the Si-X bond is not the rate-determining step.D. The product always shows an inversion of configuration.Identify the correct statements.a)B and C onlyb)A and B onlyc)C and D onlyd)B, C, and D onlyCorrect answer is option 'A'. Can you explain this answer? for UGC NET 2024 is part of UGC NET preparation. The Question and answers have been prepared according to the UGC NET exam syllabus. Information about The nucleophilic substitution of RRRSiX (R, R, R" = alkyl groups) by a nucleophile Y gives the product RRR"SiY. Among the following,A. Silylium cation is formed during the reaction.B. It is a second-order reaction.C. The cleavage of the Si-X bond is not the rate-determining step.D. The product always shows an inversion of configuration.Identify the correct statements.a)B and C onlyb)A and B onlyc)C and D onlyd)B, C, and D onlyCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for UGC NET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The nucleophilic substitution of RRRSiX (R, R, R" = alkyl groups) by a nucleophile Y gives the product RRR"SiY. Among the following,A. Silylium cation is formed during the reaction.B. It is a second-order reaction.C. The cleavage of the Si-X bond is not the rate-determining step.D. The product always shows an inversion of configuration.Identify the correct statements.a)B and C onlyb)A and B onlyc)C and D onlyd)B, C, and D onlyCorrect answer is option 'A'. Can you explain this answer?.
The nucleophilic substitution of RRRSiX (R, R, R" = alkyl groups) by a nucleophile Y gives the product RRR"SiY. Among the following,A. Silylium cation is formed during the reaction.B. It is a second-order reaction.C. The cleavage of the Si-X bond is not the rate-determining step.D. The product always shows an inversion of configuration.Identify the correct statements.a)B and C onlyb)A and B onlyc)C and D onlyd)B, C, and D onlyCorrect answer is option 'A'. Can you explain this answer? for UGC NET 2024 is part of UGC NET preparation. The Question and answers have been prepared according to the UGC NET exam syllabus. Information about The nucleophilic substitution of RRRSiX (R, R, R" = alkyl groups) by a nucleophile Y gives the product RRR"SiY. Among the following,A. Silylium cation is formed during the reaction.B. It is a second-order reaction.C. The cleavage of the Si-X bond is not the rate-determining step.D. The product always shows an inversion of configuration.Identify the correct statements.a)B and C onlyb)A and B onlyc)C and D onlyd)B, C, and D onlyCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for UGC NET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The nucleophilic substitution of RRRSiX (R, R, R" = alkyl groups) by a nucleophile Y gives the product RRR"SiY. Among the following,A. Silylium cation is formed during the reaction.B. It is a second-order reaction.C. The cleavage of the Si-X bond is not the rate-determining step.D. The product always shows an inversion of configuration.Identify the correct statements.a)B and C onlyb)A and B onlyc)C and D onlyd)B, C, and D onlyCorrect answer is option 'A'. Can you explain this answer?.
Solutions for The nucleophilic substitution of RRRSiX (R, R, R" = alkyl groups) by a nucleophile Y gives the product RRR"SiY. Among the following,A. Silylium cation is formed during the reaction.B. It is a second-order reaction.C. The cleavage of the Si-X bond is not the rate-determining step.D. The product always shows an inversion of configuration.Identify the correct statements.a)B and C onlyb)A and B onlyc)C and D onlyd)B, C, and D onlyCorrect answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for UGC NET.
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The nucleophilic substitution of RRRSiX (R, R, R" = alkyl groups) by a nucleophile Y gives the product RRR"SiY. Among the following,A. Silylium cation is formed during the reaction.B. It is a second-order reaction.C. The cleavage of the Si-X bond is not the rate-determining step.D. The product always shows an inversion of configuration.Identify the correct statements.a)B and C onlyb)A and B onlyc)C and D onlyd)B, C, and D onlyCorrect answer is option 'A'. Can you explain this answer?, a detailed solution for The nucleophilic substitution of RRRSiX (R, R, R" = alkyl groups) by a nucleophile Y gives the product RRR"SiY. Among the following,A. Silylium cation is formed during the reaction.B. It is a second-order reaction.C. The cleavage of the Si-X bond is not the rate-determining step.D. The product always shows an inversion of configuration.Identify the correct statements.a)B and C onlyb)A and B onlyc)C and D onlyd)B, C, and D onlyCorrect answer is option 'A'. Can you explain this answer? has been provided alongside types of The nucleophilic substitution of RRRSiX (R, R, R" = alkyl groups) by a nucleophile Y gives the product RRR"SiY. Among the following,A. Silylium cation is formed during the reaction.B. It is a second-order reaction.C. The cleavage of the Si-X bond is not the rate-determining step.D. The product always shows an inversion of configuration.Identify the correct statements.a)B and C onlyb)A and B onlyc)C and D onlyd)B, C, and D onlyCorrect answer is option 'A'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice The nucleophilic substitution of RRRSiX (R, R, R" = alkyl groups) by a nucleophile Y gives the product RRR"SiY. Among the following,A. Silylium cation is formed during the reaction.B. It is a second-order reaction.C. The cleavage of the Si-X bond is not the rate-determining step.D. The product always shows an inversion of configuration.Identify the correct statements.a)B and C onlyb)A and B onlyc)C and D onlyd)B, C, and D onlyCorrect answer is option 'A'. Can you explain this answer? tests, examples and also practice UGC NET tests.
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