parameters     none

spacegroup     Fm3(-)m
a-axis         5.628

vdwtype        LENNARD-JONES
radiusrule     GEOMETRIC
radiustype     SIGMA
radiussize     DIAMETER
epsilonrule    GEOMETRIC

vdw-cutoff     50.0
ewald

atom      1    Na+   "Na+ Sodium Ion"     11  22.990  0
atom      2    Cl-   "Cl- Chloride Ion"   17  35.453  0

vdw       1    3.330445     0.002772
vdw       2     4.41724     0.118

charge    1         1.0
charge    2        -1.0
