PM7 Accuracy

2,3-dimethyl pyrazine    627 2,3-Dimethyl pyrazine

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    #  Species Formula
   617 4-AminopyridineC5H6N2
   618 Dimethyl propanedinitrileC5H6N2
   619 2-Ethyl-1H-imidazoleC5H8N2
   620 DiethylcyanamideC5H10N2
   621 ButylmethyldiazeneC5H12N2
   622 ButylmethyldiazineC5H12N2
   623 N,N-Dimethyl-1,3-propanediamineC5H14N2
   624 2-CyanopyridineC6H4N2
   625 3-CyanopyridineC6H4N2
   626 4-CyanopyridineC6H4N2
   627 2,3-Dimethyl pyrazine C6H8N2
   628 HexanedinitrileC6H8N2
   629 PhenylhydrazineC6H8N2
   630 3(Dimethylamino) propanenitrileC6H12N2
   631 TetramethyldiazetineC6H12N2
   632 TriethylenediamineC6H12N2
   633 1,2-DiisopropyldiazeneC6H14N2
   634 DipropyldiazeneC6H14N2
   635 1H-BenzimidazoleC7H6N2
   636 1H-IndazoleC7H6N2
   637 1-Methyl-1-phenylhydrazineC7H10N2


DHf: 30.1 kcal/mol,     REF: NIST Chemistry WebBook, NIST Standard Reference Database, No. 69; W. G. Mallard, P. J. Linstrom, Eds., National Institute of Standards and Technology, Gaithersberg, http://webbook.nist.gov/chemistry.
  
 PM7
2,3-Dimethyl pyrazine
 H=30.11 HR=NIST
  N     0.00000000  0    0.0000000  0    0.0000000  0     0     0     0
  C     1.34339132  1    0.0000000  0    0.0000000  0     1     0     0
  C     1.40733303  1  120.7593727  1    0.0000000  0     2     1     0
  N     1.34316657  1  120.7679770  1   -0.0065077  1     3     2     1
  C     1.34855227  1  118.9496718  1   -0.0005873  1     4     3     2
  C     1.42167430  1  120.2896671  1    0.0040411  1     5     4     3
  C     1.48976480  1  124.0167484  1  179.9899352  1     6     5     4
  C     1.48969349  1  115.7266810  1 -179.9400418  1     5     4     6
  H     1.09356940  1  116.5985467  1 -179.9945630  1     2     1     3
  H     1.09366863  1  122.5942359  1  179.9957087  1     3     2     4
  H     1.10362961  1  110.8731365  1  118.9956858  1     7     6     5
  H     1.10397621  1  110.9052810  1  117.4865488  1     7     6    11
  H     1.09655460  1  113.4442238  1  121.1330160  1     7     6    12
  H     1.10374591  1  110.9020590  1  -59.3550959  1     8     5     4
  H     1.10390404  1  110.8842201  1  117.5498732  1     8     5    14
  H     1.09661544  1  113.4313888  1  121.1215097  1     8     5    15