12

Si           0.000000  -2.199765   0.195211
Si          -1.905053  -1.099883  -0.195211
Si          -1.905053   1.099883   0.195211
Si           0.000000   2.199765  -0.195211
Si           1.905053   1.099883   0.195211
Si           1.905053  -1.099883  -0.195211
H            3.180523   1.836276  -0.043561
H            0.000000   3.672551   0.043561
H           -3.180523   1.836276  -0.043561
H           -3.180523  -1.836276   0.043561
H            0.000000  -3.672551  -0.043561
H            3.180523  -1.836276   0.043561
