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UPSC Combined Geo-Scientist

Chemist

  • 3 descriptive papers
  • 200 marks each
  • 3 h per paper

Mains Paper I covers inorganic chemistry.

UPSC Combined Geo-Scientist, Mains · 2021 · Mains Paper I

Q9(a)(i). Catalytically useful features of Wilkinson’s complex

Question

What peculiarities does the Wilkinson's catalyst have that it behaves as a catalyst?

Answer in brief

RhCl(PPh₃)₃ combines labile phosphine coordination with accessible Rh(I)/Rh(III) chemistry, enabling H₂ activation, alkene binding and product release.

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The full model answer

As written for the answer booklet: the diagram carries the working, the lines stay short. Read here only; it is not offered as a download.

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Topic notes: organometallics: 18-electron rule, oxidative addition, fluxional molecules and Wilkinson's catalyst, with every Civil Services, IFoS and Geo-Scientist PYQ →

CoversWilkinson's catalystRhCl(PPh3)316-electron complexoxidative additionhomogeneous catalysis

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