%chk=Opt_Reac_Iso_171
%nproc=32
%mem=100gb
#p m062x 6-311g(d) opt freq 

Title Card Required

0 1
 C                  0.28501251   -1.54418027    0.00000000
 C                 -0.89476132   -0.93724695    0.00000000
 C                 -0.79606489    0.66741302    0.00000000
 C                  0.27666206    0.77405747    1.09739593
 C                  0.75155288   -0.18388439    0.00000000
 H                  0.04295776    0.32280630    2.06039402
 H                  0.81081038    1.72296531    1.17295371
 H                  0.67196524   -2.54966437    0.00000000
 C                  0.27666206    0.77405747   -1.09739593
 H                  0.04295776    0.32280630   -2.06039402
 H                  0.81081038    1.72296531   -1.17295371
 H                 -1.77424576    1.15685429    0.00000000