5
 
Si    0.0000000   -0.0000000    0.0000000 
H     0.8560414    0.8560414   -0.8560414 
H    -0.8560414   -0.8560414   -0.8560414 
H     0.8560414   -0.8560414    0.8560414 
H    -0.8560414    0.8560414    0.8560414 
