Si2 
1.0
3.8065922115515534e+00 2.9010228505286729e-16 3.2240259257631500e-16 
1.9032961057757767e+00 3.2966055570516337e+00 1.0035798765128369e-16 
1.9032961057757767e+00 1.0988685190172114e+00 3.1080695257179545e+00 
Si 
2 
Cartesian
   3.8144946022    4.3520043435    3.0655798183
   1.8895307407    1.1474634700    0.7952538078
