Si 
 1.0000000000000000
     0.0000000000000000    2.7343639980000001    2.7343639980000001
     2.7343639980000001    0.0000000000000000    2.7343639980000001
     2.7343639980000001    2.7343639980000001    0.0000000000000000
 Si 
   2
Cartesian
  0.0000000000000000  0.0000000000000000  0.0000000000000000
  1.3671819990000000  1.3671819990000000  1.3671819990000000
