Enter a species  (e.g. Al, Fe): Cl
Enter a hexagonal lattice type (e.g. hcp): hcp
Enter a model name: LJ_ElliottAkerson_2015_Universal__MO_959249795837_003
Enter hexagonal lattice constants 'a' and 'c' (m): 1.984025154541304e-10, 3.239964156612628e-10

Calculating isothermal bulk modulus

Optimization terminated successfully.
         Current function value: -74.665238
         Iterations: 72
         Function evaluations: 188

Finished calculation

C11 = 17222.11941736305 GPa
C12 = 4609.200479669153 GPa
  B = 8813.506792233784 GPa