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Coordination Compounds

Question
CBSEENCH12007484
Wired Faculty App

Write down the IUPAC name for each of the following complexes and indicate the oxidation state, electronic configuration & coordination number, Also give stereochemistry and magnetic moment of the complex:
K[Cr(H2O)2(C2O4)2]. 3H2O

Solution

K[Cr(H2O)2(C2O4)2] 3H2O 

IUPAC: Potassium diaquadioxalatochromate (III) trihydrate.

Oxidation state = +3
Electronic configuration: 3d3 : t2g3.
sterochemistry :

Coordination number = 6
it have three unpaired electron therefore magnetic moment is calculated as :

[n(n+2)]1/2

where n= unpaired electron
[3(3+2)]1/2

[15]1/2 =4.80 B.M

Some More Questions From Coordination Compounds Chapter

Write the formula for the following coordination compound:
Dichloridobis(ethane-1, 2-diamine)platinum(lV) nitrate.

Write the formula for the following coordination compound:
Iron(III) hexacyanidoferrate(II)

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.

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