Chemistry - Coordination Chemistry Question with Solution | TestHub

Ambidentate Ligands: The complex contains two types of ambidentate ligands: CN⁻ and NOS⁻.

CN⁻ Modes: Each CN⁻ ligand can bind via C or N. For five CN⁻ ligands, the number of nitrogen-bonded units can vary from 0 to 5, giving 6 distinct linkage combinations ($5C$, $4C+1N$, $3C+2N$, $2C+3N$, $1C+4N$, $5N$).

NOS⁻ Modes: The single NOS⁻ ligand can bind through 3 different atoms (N, O, or S), giving 3 distinct linkage modes.

Total Isomers: Multiplying the independent combinations gives $6\times 3=18$.