4
Phosphorene 1-Layer, PBE/TZP optimized
P       0.000000000    -0.424427083     1.057629188
P      -0.000000000     0.424427083    -1.057629188
P       1.649080431     1.919167309    -1.057629188
P      -1.649080431    -1.919167309     1.057629188
VEC1     3.298160863    -0.000000000     0.000000000
VEC2    -0.000000000     4.687188783     0.000000000