12
Phosphorene 3-Layer, PBE/TZP optimized
P       0.827601929    -0.405827265     6.672508641
P      -0.827601929    -1.900616065     6.672508641
P       0.827601929     0.405827265    -6.672508641
P      -0.827601929     1.900616065    -6.672508641
P       0.827601929     0.403979056     4.541385094
P      -0.827601929     1.902464274     4.541385094
P       0.827601929    -0.403979056    -4.541385094
P      -0.827601929    -1.902464274    -4.541385094
P      -0.827601929    -0.403818798     1.068192715
P      -0.827601929     0.403818798    -1.068192715
P       0.827601929     1.902624532    -1.068192715
P       0.827601929    -1.902624532     1.068192715
VEC1     3.310407716     0.000000000     0.000000000
VEC2     0.000000000     4.612886659     0.000000000