Si2 
1.0
3.7569189939633119e+00 -4.2418083783223771e-16 -5.6981711283654698e-16 
1.8784594969816559e+00 3.2535872887325046e+00 9.6316701938546895e-17 
1.8784594969816559e+00 1.0845290962441674e+00 3.0675115133934763e+00 
Si 
2 
Cartesian
   3.7318267484    0.0263891695    0.0421465697
   1.9617122009    1.0997882346    0.7558785194
