5
POCl3 has C3v symmetry
 8   0.359420418   0.981602941  -3.235711076
15   0.359420418   0.981602941  -1.435711076
17   2.285593911   0.981602941  -0.754752484
17  -0.603666090  -0.686512463  -0.754752703
17  -0.603666090   2.649718346  -0.754752703
