Fe 
 1.0000000000000000
     3.5597398793639199    0.0000000000000000    0.0000000000000000
     0.0000000000000001    3.5597398793639199    0.0000000000000000
     0.0000000000000000    0.0000000000000001    3.5597398793639199
 Fe 
   4
Cartesian
  3.5597398693814730  0.0000000000000000  0.0000000000000000
  3.5597398693814730  1.7798699396819599  1.7798699396819599
  1.7798699296995131  0.0000000000000000  1.7798699396819599
  1.7798699296995131  1.7798699396819599  0.0000000000000000