You visited us 1 times! Enjoying our articles? Unlock Full Access!

Isomerism in Coordination Compounds

i Write the I...

Question

(i) Write the IUPAC name of the complex $[C r (N H_{3})_{4} C l_{2}] C l .$

(ii) What type of isomerism is exhibited by the complex $[C o (e n)_{3}]^{3 +}$ ?
(en = ethane-1, 2-diamine)

(iii) Why is $[N i C l_{4}]^{2 -}$ paramagnetic but $[N i (C O)_{4}]$ is diamagnetic ?
(At. nos. : Cr = 24, Co = 27, Ni =28)

Open in App

Solution

(i) Dichloridotetraamminechromium (III) chloride

(ii) Optical isomerism.

(iii) In $[N i C l_{4}]^{2 -}, C l^{-}$ provides a weak field of ligands. It is therefore unable to pair up electrons in 3d orbital. Hence, hybridisation involved is $s p^{3}$ . Due to presence of unpaired electrons it is paramagnetic.

In $[N i (C O)_{4}]$ , the two electrons in 4s orbitals of Ni pair up in 3d orbitals due to strong field of CO. It undergoes $s p^{3}$ hybridisation. Since there are no unpaired electrons present, the complex is diamagnetic

Suggest Corrections

Similar questions

[C o (N H_{3})_{5} (S C N)]^{2 +}

[N i C l_{4}]^{2 -}

[N i (C N)_{4}]^{2 -}

[C o (N H_{3})_{5} (S C N)]^{2 +}

[N i C l_{4}]^{2 +}

[N i (C N)_{4}]^{2 -}

N i = 28

[C o {(N H_{3})}_{5} C l] S O_{4}

[N i {(C O)}_{4}]

{[N i {C l}_{4}]}^{2 -}

e n = H_{2} N C H_{2} C H_{2} N H_{2}; A t . N o s . : T i = 22; C r = 24; C o = 27; P t = 78

	List - I		List - II
(P)	$[C r (N H_{3})_{4} C l_{2}] C l$	1.	Paramagnetic and exhibits ionisation isomerism.
(Q)	$[T i (H_{2} O)_{5} C l] (N O_{3})_{2}$	2.	Diamagnetic and exhibits cis-trans isomerism
(R)	$[P t (e n) (N H_{3}) C l] N O_{3}$	3.	Paramagnetic and exhibits cis-trans isomerism
(Q)	$[C o (N H_{3})_{4} (N O_{3})_{2}] N O_{3}$	4.	Diamagnetic and exhibits ionisation isomerism

[C o (e n)_{2} C l_{2}]^{+} .

d^{4}

Δ_{0} > P .

[N i C l_{4}]^{2 -}

[N i (C O)_{4}]

Join BYJU'S Learning Program