O Si 
 1.0000000000000000
     4.3495999999999997    0.0000000000000000    0.0000000000000000
     0.0000000000000000    4.3495999999999997    0.0000000000000000
     0.0000000000000000    0.0000000000000000    4.3495999999999997
 O   Si 
   8   4
Cartesian
  1.0873999999999999  1.0873999999999997  1.0873999999999997
  3.2622000000000000  3.2621999999999995  1.0873999999999997
  3.2622000000000000  1.0873999999999997  3.2621999999999995
  1.0873999999999999  3.2621999999999995  3.2621999999999995
  1.0873999999999999  1.0873999999999995  3.2621999999999995
  3.2622000000000000  3.2621999999999991  3.2621999999999995
  1.0873999999999999  3.2621999999999991  1.0873999999999997
  3.2622000000000000  1.0873999999999995  1.0873999999999997
  0.0000000000000000 -0.0000000000000004 -0.0000000000000004
  0.0000000000000000  2.1747999999999994  2.1747999999999994
  2.1747999999999998 -0.0000000000000004  2.1747999999999994
  2.1747999999999998  2.1747999999999994 -0.0000000000000004