COORDINATION COMPOUND

Question 1

What are Isomers?

Answer 1

Have the Same Molecular Formula
But Different PROPERTIES

Question 2

Ionisation Isomers?

Answer 2

Give different ions in the solution.
[Co (NH3)4 Br2] SO4
[Co (NH3)4 SO4] Br2

Question 3

Hydrate Isomers?

Answer 3

Different H2O molecules inside the Coordination Sphere.
[Cr (H20)6] Cl3
[Cr (H20)5 Cl] Cl2. H20
[Cr (H20)4 Cl2] Cl. 2H20

Question 4

Linkage Isomers

Answer 4

In the case of an Ambidentate ligand by changing the donor atom.
[Co (NH3)5 NO2] Cl2
[Co (NH3)5 ONO] Cl2

Question 5

Coordination Isomer?

Answer 5

When the cation and anion both are in the coordination sphere.
Interchange of ligand between two complex ions of the same complex

Question 6

Geometric Isomerism NOT shown in case when C.N is 4?

Answer 6

TETRAHEDRAL

Question 7

What is Cis Platin? Which treatment does it do?

Answer 7

[Pt (NH3)2 (Cl)2]

CANCER TREATMENT

Question 8

How is GI possible or not?

Answer 8

Ligands को pairing करके different sets बनाए। फिर अगर 2 or more than 2 sets बने then GI is POSSIBLE.

Mabcd
(ab),(cd) ; (ac),(bd) ; (ad),(bc)
3 sets for GI POSSIBLE

Applicable for both CN=4 and CN=6

Question 9

What does AB refer to in the complex [M(AB)2]?

Answer 9

AB refers to a bidentate ligand.
(AA),(BB) ; (AB),(AB)
Here, 2 sets are POSSIBLE therefore GI is also POSSIBLE.
An example is Diglycinato Platinum(II) complex

Question 10

Optical Isomerism कौन show करते हैं?

Answer 10

जो Plane Polarised Light को rotate कर सकते है।

Question 11

Optical Isomerism not shown by? ( In the case of CN=4 )

Answer 11

Both Tetrahedral and Square Planar

Question 12

Which compounds are optically Inactive in the case of CN=6?

Answer 12

Compound in which 2 pairs are IDENTICAL in one of the sets like (ab),(ab) or if both ligands are identical in any one of the pair of any set like (aa)/(bb)

Question 13

What does Facial and Meridonial mean in GI?

Answer 13

In Facial GI the three ligands are adjacent to each other unlike Meridonial.
[MA3B3]
Two sets are possible means 2 GI are present.
(AB),(AB),(AB) ; (AB),(AA),(BB)
Both sets are Optically Inactive as they have 2 identical pairs in each set

Question 14

In [MA3BCD] How many Stereo isomers are possible?

Answer 14

There can be 4 sets possible here
1.{AA, AB, CD}
2.{AA, AC, BD}
3.{AA, AD, BC}
4.{AB, AC, AD}
So there are 4 GI POSSIBLE
ONLY 4th Set is Optically Active

Total no. of stereo isomers = No. Of Optically inactive compounds + 2 × No. Of Optically active compounds = 3 + 2 × 1 = 5
So, 5 stereo isomers are present

Question 15

How to check Optical Isomers when CN is 6 for Bidendate ligand?

Answer 15

1. Make a mirror image. If the image is non super impossible then OPTICALLY ACTIVE.
   OR
2. If POS is absent then OPTICALLY ACTIVE and vice versa.

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