Coordination Compounds 2 Question 15
####17. Match the metals (Column I) with the coordination compound(s)/enzyme(s) (Column II).
(2019 Main, 11 Jan I)
| Column I | Col | Imn II |
|---|---|---|
| (A) $Co$ | (i) | Wilkinson catalyst |
| (B) $Zn$ | (ii | Chlorophyll |
| (C) $Rh$ | (iii) | Vitamin $B _{12}$ |
| (D) $Mg$ | (iv) | Carbonic anhydrase |
| (a) (i) | (ii) | (iii) | (iv) |
|---|---|---|---|
| (b) (iv) | (iii) | (i) | (ii) |
| (c) (iii) | (iv) | (i) | (ii) |
| (d) (ii) | (i) | (iv) | (iii) |
Show Answer
Answer:
Correct Answer: 17. (c)
Solution:
- (A) Co is present in vitamin $B _{12}$ (iii) having molecular formula,
$$ C _{63} H _{88} \stackrel{\text { II }}{CoN _{14}} O _{14} P . $$
(B) $Zn$ is present in carbonic anhydrase (iv) in which three histidine units and the $-OH$ group coordinate with one $Zn$ (II) ion.
(C) $Rh$ is present in Wilkinson catalyst (i) having molecular formula $\left[\left(Ph _3 P\right) _3 RhCl\right]$.
(D) $Mg$ is present in chlorophyll (ii) having molecular formula $C _{55} H _{70} O _6 N _4 \stackrel{\text { II }}{Mg}$ (chlorophyll-b).
