Si2 
1.0
3.7570806781714707e+00 -6.8534086928361475e-16 -5.6960800674779013e-16 
1.8785403390857354e+00 3.2537273113641598e+00 -3.4756340182275882e-16 
1.8785403390857354e+00 1.0845757704547196e+00 3.0676435279966277e+00 
Si 
2 
Cartesian
   3.8083710575    0.0556401595    0.0524638190
   1.9023223024    1.1307946923    0.7974188713
