Review: Linear Combinations of Atomic Orbitals (LCAO's)
Question 1
Give an appropriate set of LCAO's for a square pyramidal sp^{3}d geometry assuming:
 The axialbase angle = 90° [Solution]
 The axialbase angle > 90° [Solution]
Symmetry Adapted Linear Combinations (SALCs)
Question 1
For the following molecules determine the symmetry labels for the SALCs:
 PdCl_{4}^{2} (square planar) [Solution]
 SiCl_{4} [Solution]
 cisPtF_{2}Cl_{2}^{2} [Solution]
 SF_{6} [Solution]
Question 2
For the following molecules draw a picture of each SALC:
 PdCl_{4}^{2} (square planar) [Solution]
 SiCl_{4} [Solution]
 cisPtF_{2}Cl_{2}^{2} [Solution]
 SF_{6} [Solution]
Molecular Orbital Diagrams (σbonding)
Question 1
For the following molecules construct an MO Diagram to describe the σbonding:
 transSF_{2}Cl_{4} [Solution]
 NH_{4}^{+} [Solution]
 SF_{6} [Solution]
Molecular Orbital Diagrams (πbonding)
Question 1
For the following molecules construct an MO Diagram to describe the πbonding:
 SiF_{4} (s,p_{x},p_{y},p_{z} orbitals used for σbonding) [Solution]
 GeH_{2}Cl_{2} (s,p_{x},p_{y},p_{z} orbitals used for σbonding) [Solution]
 SnCl_{6}^{2} (s,p_{x},p_{y},p_{z}, d_{z}2, d_{x}2_{y}2 orbitals used for σbonding) [Solution]
Question 2
For PtCl_{4}^{2} (square planar), s, p_{x}, p_{y} and d_{x}2_{y}2 are used for σbonding. Construct an MO Diagram to describe the πbonding:
 for πbonding perpendicular to the plane [Solution]
 for πbonding parallel to the plane [Solution]
