3 vb= 3.10954e-10 6.926 0.0
4 vc= 2.87787e-10 2.87787e-10 6.41
6 O 1.31455 1.02164e-10 2.27555
7 O 4.37557e-10 5.61145 4.13445
8 O 2.44642e-10 1.31455 4.13445
9 O 5.61145 1.02164e-10 2.27555
14 O 3.463 3.40452e-11 0.758303
15 O 4.09219e-10 3.463 5.6517
16 Si 1.85548 3.4074e-11 0.758944
17 Si 4.81362e-10 5.07052 5.65106
18 Si 3.37018e-10 1.85548 5.65106
19 Si 5.07052 3.4074e-11 0.758944
20 Si 1.43894e-10 1.43894e-10 3.205