Octahedral Complexes:-

1. 
2. 
3. 

Possibilities:-

Ma₃b₃ :- [Co (NH₃)₃ Cl₃ ]

Ma₂b₂C₂

In this case there are 5 possibilities:-

1. All the legands are at 90°.
2. All at 180°
3. a – a, b, b = 90°, c – c = 180°
4. a – a, c – c = 90, b – b = 180
5. b – b, c – c = 90° and a – a = 180°

4. 

5.

Ma₂bcde

• M (AA)₃

No geometry

e.g.:- [ G (en)₃ ] Cl₃

 

• M (AA)₂b₂

[ Pt (en)₂ Cl₂ ]

• M (AA)b₄

b are fixed and

AA is at 90° and are fired

No geometry exists.

 

• M (AA)b₂ C₂

[ Pt (en)Cl₂ Be₂ ]

Cases:-

1. B – B = 90°                         C – C = 90°

B – B = 90°                         C – C = 180°

B – B = 180°                       C – C = 90°

• Mabcd

No  geometry

[Zn (NH₃) (H₂O) (Cl) (Br)]