In the crystal field of the complex - FeClCN4 O2 -4- the electronic configuration of the metal is found to be t62g e0g- Which of the following is true about this complex ion-

The electronic configuration of Fe is given as t^6_2g nbsp; e^0_g. This lets us conclude that Fe is in +2 oxidation state. Balancing the charges, we see that ...

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Byju's Answer

Standard XIII

Chemistry

Crystal Field Split in Octahedral Complexes

In the crysta...

Question

In the crystal field of the complex ${[F e (C l) (C N)_{4} (O_{2})]}_{4}^{4 -}$ , the electronic configuration of the metal is found to be $t_{2 g}^{6} e_{g}^{0}$ . Which of the following is true about this complex ion?

It is a paramagnetic complex

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O - O

bond length will be less than what is found in the

O_{2}

molecule

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Its IUPAC name will be chlorotetracyanosuperoxidoferrate(II) ion

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It is a diamagnetic complex

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Solution

The correct option is D It is a diamagnetic complex
The electronic configuration of $F e$ is given as $t_{2 g}^{6} e_{g}^{0}$ . This lets us conclude that $F e$ is in +2 oxidation state. Balancing the charges, we see that the $O_{2}$ given is nothing but superoxide ligand. We know that the $O - O$ bond length in superoxide is longer than that in oxygen. ${[F e (C l) (C N)_{4} (O_{2})]}_{4}^{4 -}$ will be called chlorotetracyanosuperoxidoferrate(II) ion.
We also know that Cynaide is a strong field ligand and hence it will cause pairing in the $t_{2 g}$ orbitals. This lets us conclude that the said complex will be diamagnetic in nature.

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Similar questions

Q. In the crystal field of the complex

{[F e (C l) (C N)_{4} (O_{2})]}_{4}^{4 -}

, the electronic configuration of the metal is found to be

t_{2 g}^{6} e_{g}^{0}

. Which of the following is true about this complex ion?

Q. Wilkinson's catalyst react with

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Give the electronic configuration of the following complexes on the basis of crystal field splitting theory. $[C o F_{6}]^{3 -}, [F e (C N)_{6}]^{4 -}$ and $[C u (N H_{3})_{6}]^{2 +} .$

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In the crystal field of the complex [Fe(Cl)(CN)4(O2)]4−, the electronic configuration of the metal is found to be t62ge0g. Which of the following is true about this complex ion?

In the crystal field of the complex ${[F e (C l) (C N)_{4} (O_{2})]}_{4}^{4 -}$ , the electronic configuration of the metal is found to be $t_{2 g}^{6} e_{g}^{0}$ . Which of the following is true about this complex ion?