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 B12
(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)
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Answer:

Correct Answer: 17. (c)

Solution:

  1. (A) Co is present in vitamin B12 (iii) having molecular formula,

C63H88CoN14 II O14P.

(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 [(Ph3P)3RhCl].

(D) Mg is present in chlorophyll (ii) having molecular formula C55H70O6N4Mg II  (chlorophyll-b).



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