MCQ
Carbon donor ligands are strong ligands and usually forms low spin complexes. Among the complexes given below, select the high spin complex
- A$Fe(CN)_6]^{3-}$
- B$[Fe(CN)_6]^{4-}$
- ✓$[Fe(C_2O_4)_3]^{3-}$
- Dnone of these
✓
Answer
Correct option: C.
$[Fe(C_2O_4)_3]^{3-}$
c
The complex among the given complexes which shows high spin is $\left[ Fe \left( C _{2} O _{4}\right)_{3}\right]^{3-} .$ This is because the $\left( C _{2} O _{4}\right)$ is a weak field sigma donar ligand
which do not pair up the electrons as CN ligand in the other complexes.
The complex among the given complexes which shows high spin is $\left[ Fe \left( C _{2} O _{4}\right)_{3}\right]^{3-} .$ This is because the $\left( C _{2} O _{4}\right)$ is a weak field sigma donar ligand
which do not pair up the electrons as CN ligand in the other complexes.
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