4 atoms

Coords

1    0.00    0.00    0.00
2    1.00    0.00    0.00
3   -0.50    0.86    0.00
4   -0.50   -0.86    0.00

Types

1    1
2    2
3    2
4    2

Charges

1    0
2    0
3    0
4    0