Si 
 1.0000000000000000
     2.9004324500586933    0.0000000000000001   -0.0000000000000000
    -1.4502162250293467    2.5118481837115691   -0.0000000000000000
    -0.0000000000000000    0.0000000000000000    4.6508808067891803
 Si 
   2
Selective dynamics
Cartesian
 -0.0000000145021629  1.6745654641805405  1.1627202016972951   T   T   T
  1.4502162105271847  0.8372827362766839  3.4881606050918834   T   T   T