Si2 
1.0
3.9215761576304837e+00 7.0223001945679370e-16 -6.1644980325179650e-17 
1.9607880788152419e+00 3.3961845753833675e+00 -5.0573419017524227e-16 
1.9607880788152419e+00 1.1320615251277903e+00 3.2019535245529789e+00 
Si 
2 
Cartesian
   3.8865699964    0.0133660490    0.0081348653
   1.9642507143    1.0923866931    0.8080363427
