CHEM 3303 - Supplementary Problems

CHEM 3303 - Supplementary Problems - Part 3

Evaluating Lewis Structures

Question 1

a. XeO₃ (hybridisation: sp³)

Point Group = C_3v

C_3v	E	2C₃	3σ_v
Γ_π	6	0	0

Γ_π reduces to A₁ + A₂ + 2E

Lewis structure, assuming d orbitals are available for bonding:

b. XeF₂O₃ (hybridisation: sp³d)

Point Group = D_3h

D_3h	E	2C₃	3C₂	σ_h	2S₃	3σ_v
Γ_π(O)	6	0	-2	0	0	0

Γ_π(O) reduces to A₂' + E' + 2A₂" + E"

Lewis structure, assuming d orbitals are available for bonding: