
 Firsrt and second attempt: standard minimizations without pressure.
 The second one starts from the first optimized basis set.
 Customary changes in the displacements in order to try to go far away from
 some limits.

-----------------------------------------------------------
Third attempt: Introduce a pressure of 0.03 GPa

Starting from the optimized basis set number 2, 
we perform an optimization of the enthalpy with a 
pressure of 0.03 GPa. 

The goal is to reduce the range of the atomic orbitals
(some of them where too long).

-----------------------------------------------------------
Fourth attempt: Second optimization with a pressure of 0.03 GPa

Starting from the optimized basis set number 3, 
we perform a last optimization of the enthalpy with a 
pressure of 0.03 GPa. 

