Si
 1.0000000000000000
     1.3936607254479301   -2.4138911849891098    0.0000000000000000
     1.3936607254479301    2.4138911849891098    0.0000000000000000
     0.0000000000000000    0.0000000000000000    4.8564581422242599
 Si 
   2
Cartesian
  1.3936607254479312  0.8046303949963860  1.2141145355560652
  1.3936607254479310 -0.8046303949963866  3.6423436066681965