## The H_{9} cluster

In this section you will calculate the wavefunction
and the energy level diagrams for the
linear and cyclic H_{9} clusters.

**Exercise 1**: Start DLVisualize,
run a CRYSTAL calculation for the linear case:
H9_linear.inp

**Exercise 2**: Run a CRYSTAL properties calculation
of the energy level diagram + the density of states

for the H_{9} linear cluster,
as explained in **Exercise 4**
for H_{4}.

**Exercise 3**: Start DLVisualize,
run a CRYSTAL calculation for the cyclic case:
H9_cyclic.inp

**Exercise 4**: Run a CRYSTAL properties calculation
of the energy level diagram + the density of states

for the H_{9} cyclic cluster,
as explained in **Exercise 4**
for H_{4}.

Save the energies of the molecular orbitals in a file for **Exercise 5**
at the end of the section The H_{10} cluster

Index
Next