N  7 
GGA-PBE
2 2 0 0 0 0
2 1 3
0 0 0
c
v
v
1
1.3
y
10
n
y
5
n
Vanderbilt
2 0
1.30
1.30
1.30
1.30
1
2 1 3
0 0 0
0