%chk=nh3_mp2_d3h.chk
%mem=1000MB
%nproc=1
# opt mp2=full/6-311+g(d,p)

NH3 mp2 high symmetry d3h optimisation

0 1
 N  
 X  1   2.0
 H  1   RH1   2   AHNX1
 H  1   RH1   2   AHNX1   3   THNXH1
 H  1   RH1   2   AHNX1   3   -THNXH1

 RH1     1.01
 AHNX1   90.0
 THNXH1  120.0