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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 · 2017 · Mains Paper I

Q4(a). Cis and trans chelate structures

Question

Draw the structures of cis-[Co(en)₂Cl₂] and trans-[Co(en)₂Cl₂]. (en = 1,2-diaminoethane)

Answer in brief

Both structures are octahedral: the two chloride ligands are adjacent in cis and opposite in trans; each en occupies two adjacent sites.

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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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CoversCistrans chelate structuresCoordination isomerism

All parts of Question 4