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Wikinson’s catalyst:
- a)Is coordinatively saturated
- b)Does not obey the 18-electron rule
- c)Is used for oxidation of alcohols
- d)Is an Ir complex used in preparation of important pharmaceutical products
Correct answer is option 'B'. Can you explain this answer?
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Wikinson’s catalyst:a)Is coordinatively saturatedb)Does not obey...
Wilkinson's catalyst, is the common name for chloridotris(triphenylphosphane)rhodium(I), a coordination complex of rhodium with the formula RhCl(PPh3)3 (Ph = phenyl). It is a red-brown colored solid that is soluble in hydrocarbon solvents such as benzene, and more so in tetrahydrofuran or chlorinated solvents such as dichloromethane. The compound is widely used as a catalyst for hydrogenation of alkenes. It is named after chemist and Nobel Laureate, Sir Geoffrey Wilkinson, who first popularized its use.
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Wikinson’s catalyst:a)Is coordinatively saturatedb)Does not obey...
Explanation:
Wilkinson's catalyst is a complex of rhodium with the formula RhCl(PPh3)3. The complex is used as a homogeneous catalyst for hydrogenation of alkenes to alkanes. The complex is named after its discoverer, British chemist Sir Geoffrey Wilkinson.
Coordinatively Saturated:
A compound is considered to be coordinatively saturated if it has all of its coordination sites occupied by ligands. In the case of Wilkinson's catalyst, the rhodium atom has six coordination sites, which are occupied by three PPh3 ligands and one chloride ion. Therefore, the complex is coordinatively saturated.
18-Electron Rule:
The 18-electron rule is a guideline used to predict the stability of metal complexes. According to this rule, the most stable complexes have 18 valence electrons surrounding the metal center. However, Wilkinson's catalyst has only 16 valence electrons surrounding the rhodium center, which means it does not obey the 18-electron rule.
Oxidation of alcohols:
Wilkinson's catalyst is not used for the oxidation of alcohols. It is used for the hydrogenation of alkenes to alkanes.
Preparation of pharmaceutical products:
Although Wilkinson's catalyst is not used in the preparation of pharmaceutical products, other iridium complexes are used in the synthesis of various drugs. For example, the iridium complex [Ir(COD)Cl]2 is used in the synthesis of the anticancer drug irinotecan.
Conclusion:
In conclusion, the correct answer is option B, Wilkinson's catalyst does not obey the 18-electron rule. It is a coordinatively saturated complex used for the hydrogenation of alkenes to alkanes.
Wilkinson's catalyst is a complex of rhodium with the formula RhCl(PPh3)3. The complex is used as a homogeneous catalyst for hydrogenation of alkenes to alkanes. The complex is named after its discoverer, British chemist Sir Geoffrey Wilkinson.
Coordinatively Saturated:
A compound is considered to be coordinatively saturated if it has all of its coordination sites occupied by ligands. In the case of Wilkinson's catalyst, the rhodium atom has six coordination sites, which are occupied by three PPh3 ligands and one chloride ion. Therefore, the complex is coordinatively saturated.
18-Electron Rule:
The 18-electron rule is a guideline used to predict the stability of metal complexes. According to this rule, the most stable complexes have 18 valence electrons surrounding the metal center. However, Wilkinson's catalyst has only 16 valence electrons surrounding the rhodium center, which means it does not obey the 18-electron rule.
Oxidation of alcohols:
Wilkinson's catalyst is not used for the oxidation of alcohols. It is used for the hydrogenation of alkenes to alkanes.
Preparation of pharmaceutical products:
Although Wilkinson's catalyst is not used in the preparation of pharmaceutical products, other iridium complexes are used in the synthesis of various drugs. For example, the iridium complex [Ir(COD)Cl]2 is used in the synthesis of the anticancer drug irinotecan.
Conclusion:
In conclusion, the correct answer is option B, Wilkinson's catalyst does not obey the 18-electron rule. It is a coordinatively saturated complex used for the hydrogenation of alkenes to alkanes.
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Wikinson’s catalyst:a)Is coordinatively saturatedb)Does not obey...
Because it is 16 e species... It follows 16 e rule
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Wikinson’s catalyst:a)Is coordinatively saturatedb)Does not obey the 18-electron rulec)Is used for oxidation of alcoholsd)Is an Ir complex used in preparation of important pharmaceutical productsCorrect answer is option 'B'. Can you explain this answer?
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Wikinson’s catalyst:a)Is coordinatively saturatedb)Does not obey the 18-electron rulec)Is used for oxidation of alcoholsd)Is an Ir complex used in preparation of important pharmaceutical productsCorrect answer is option 'B'. Can you explain this answer? for Chemistry 2024 is part of Chemistry preparation. The Question and answers have been prepared according to the Chemistry exam syllabus. Information about Wikinson’s catalyst:a)Is coordinatively saturatedb)Does not obey the 18-electron rulec)Is used for oxidation of alcoholsd)Is an Ir complex used in preparation of important pharmaceutical productsCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Chemistry 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Wikinson’s catalyst:a)Is coordinatively saturatedb)Does not obey the 18-electron rulec)Is used for oxidation of alcoholsd)Is an Ir complex used in preparation of important pharmaceutical productsCorrect answer is option 'B'. Can you explain this answer?.
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