Si2 
1.0
3.8918121777621479e+00 2.7824031874152468e-16 1.4520087730078650e-17 
1.9459060888810740e+00 3.3704082126996595e+00 -6.5161372704501527e-16 
1.9459060888810740e+00 1.1234694042332203e+00 3.1776513367556807e+00 
Si 
2 
Cartesian
   3.8529187847    0.0060869820    0.0146877908
   1.9839012117    1.1767512024    0.7749830398
