13

 C        0.6336      0.0128     -1.8572  
 C       -0.6336     -0.0128     -1.8529  
 H       -1.5749     -0.0308     -2.3809  
 H        1.5676      0.0349     -2.3979  
 NI       0.0000      0.0000      0.0000  
 H       -2.0853      1.1201      2.1371  
 H        2.9379      0.7865      0.9478  
 H       -3.0995     -0.1321      0.7779  
 P        1.7975     -0.0062      1.2828  
 H        1.8159      0.3384      2.6718  
 H        2.5345     -1.2199      1.4525  
 P       -1.7788     -0.0040      1.3064  
 H       -1.9673     -0.9714      2.3441