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Coordination Compounds

Question
CBSEENCH12007491
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Discuss briefly the role of coordination compounds in medicinal chemistry.

Solution

Medicinal Chemistry: Many complex compounds are used in medicines. Some common examples are:

(i) Vitamin B12 used to prevent anaemia is a complex compound of cobalt.

(ii) The complex of calcium and EDTA is used in the treatment of lead poisoning. Inside the body calcium in the complex is replaced by lead. The more soluble lead – EDTA complex is eliminated in urine.

(iii) The platinum complex cis-[Pt(NH3)2Cl2] known as cis platin is used in the treatment of cancer.

Some More Questions From Coordination Compounds Chapter

Write the formula for the following coordination compound:
Potassium tetracyanidonickelate(II)

Write the formula for the following coordination compound:
Tris(ethane -1, 2-diamine) chromium(III) chloride

Write the formula for the following coordination compound:
Amminebromidochloridonitrito-N-platinate (II)

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.

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