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Question: Answered & Verified by Expert
The IUPAC name of \( \left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{4} \mathrm{Cl}\left(\mathrm{NO}_{2}\right)\right] \mathrm{Cl} \) is
ChemistryCoordination CompoundsKCETKCET 2018
Options:
  • A tetraammine chloridonitrito - N - cobalt(III) chloride
  • B tetraammine chloridonitrocobalt (II) chloride
  • C tetraammine chloridonitrocobalt (I) chloride
  • D tetraammine chloridodinitrocobalt (III) chloride
Solution:
2144 Upvotes Verified Answer
The correct answer is: tetraammine chloridonitrito - N - cobalt(III) chloride
The oxidation number of $\mathrm{Co}$ in given complex is
$x+4 \times 0+1(-1)+1(-1)=+1$
$x=+3$
The IUPAC name of the given complex $\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{4} \mathrm{Cl}\left(\mathrm{NO}_{2}\right)\right] \mathrm{Cl}$ is tetraamminechloridonitrito-N-cobalt(III) chloride.
$\mathrm{NO}_{2}^{-}$is an ambidentate ligand name is nitrito-N means linkage is from $\mathrm{N}$ atom

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