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Coordination Compounds

Question
CBSEENCH12007426
Wired Faculty App

Briefly explain the type of chelation.

Solution

Chelation can be of three major types:

(i) Didentate chelation: When chelation is done by didentate ligand it is called Didentate chelation, e.g., [PtCl2(en)] in this en is a didentate ligands.





(ii) Terdentate chelation: When chelation is done by a terdentate (tridentate) ligand it is called tredentate chelation e.g., [PtCl(dien)+, dien is a terdentate ligand.




(iii) Tetradentate chelation: When chelation is done by tetradentate ligand it is called tetradentate chelation e.g., [Pt(trien)]2+, trien is a tetradentate ligand.


Some More Questions From Coordination Compounds Chapter

Write the IUPAC names of the following coordination compounds:
(i) [Co(NH3)6]Cl3
(ii) [Co(NH3)5Cl]Cl2
(iii) K3[Fe(CN)6]
(iv) K3[Fe(C2O4)3]
(v) K2[PdCl4]
(vi) [Pt(NH3)2Cl(NH2CH3)]Cl.

Indicate the type of isomerism exhibited by the following complexes and draw structures for these isomers:
(i)    K[Cr(H2O)2(C2O4)2],                      (ii) [Co(en)3Cl3,
(iii) [Co(NH3)5(NO2)]|NO3]2,                 (iv) [Pt(NH3)(H2O)Cl2]

Explain on the basis of valence bond theory that [Ni(CN)4]2–  ion with square planar is diamagnetic and the [NiCl4]2– ion with tetrahedral geometry is paramagnetic.

Predict the number of unpaired electrons in the square planar [Pt(CN)4,]2– ion.

The hexaquo manganese(II) ion contains five unpaired electrons, while the hexacynoion contains only one unpaired electron. Explain using crystal field theory.

Calculate the overall complex dissociation equilibrium constant for the Cu(NH3)42+ion, given β4 for this complex is 2.1 x 1013.

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