Coordination CompoundHard
Question
Aqueous solution of nickel sulphate on treating with pyridine and then adding a solution of sodium nitrite gives dark blue crystals of :
Options
A.[Ni(py)4]SO4
B.[Ni(py)2(NO2)2]
C.[Ni(py)4](NO2)2
D.[Ni(py)3(NO2)]2SO4
Solution
[Ni (H2O)4] SO4 + Pyridine + NaNO2 → [Ni(Py)4](NO2)2
Stronger ligand, pyridine displaces weaker ligand, H2O in aqueous solution.
[Ni(py)4](NO2)2 is formed as dark blue crystals on crystallisation.
Stronger ligand, pyridine displaces weaker ligand, H2O in aqueous solution.
[Ni(py)4](NO2)2 is formed as dark blue crystals on crystallisation.
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