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NEETChemistryCoordination Compounds

Which of the following IUPAC names represents a homoleptic complex?

Options

  1. ATetraamminechloridonitrito-N-cobalt(III) chloride
  2. BDiamminedichloridoplatinum(II)
  3. CTris(ethane-1,2-diamine)cobalt(III) sulphate
  4. DPentaamminecarbonatocobalt(III) chloride

Correct answer

C. Tris(ethane-1,2-diamine)cobalt(III) sulphate

Step-by-step solution

A homoleptic complex is one in which the central metal atom or ion is bound to only one kind of donor group (ligand). Tris(ethane-1,2-diamine)cobalt(III) sulphate contains only one type of ligand, which is ethane-1,2-diamine (a bidentate ligand). Since all the ligands attached to the cobalt ion are identical, it is a homoleptic complex. The other options list complexes that contain more than one type of ligand (e.g., ammine along with chlorido, nitrito, or carbonato ligands). These are classified as heteroleptic co

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