PM7 Accuracy

trimethyl pyrazine    639 Trimethyl pyrazine

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    #  Species Formula
   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
   638 t-ButylmalononitrileC7H10N2
   639 Trimethyl pyrazine C7H10N2
   640 1-PiperidineacetonitrileC7H12N2
   641 3,3,5,5-Tetramethyl-1-pyrazolineC7H14N2
   642 m-DicyanobenzeneC8H4N2
   643 o-DicyanobenzeneC8H4N2
   644 p-DicyanobenzeneC8H4N2
   645 PhthalazineC8H6N2
   646 QuinazolineC8H6N2
   647 QuinoxalineC8H6N2
   648 n-PentylmalonodinitrileC8H12N2
   649 TetramethylbutanedinitrileC8H12N2


DHf: 17.8 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
Trimethyl pyrazine
 H=17.8 HR=NIST
  C     0.00000000  0    0.0000000  0    0.0000000  0     0     0     0
  C     1.42157403  1    0.0000000  0    0.0000000  0     1     0     0
  N     1.34556742  1  120.4456851  1    0.0000000  0     2     1     0
  C     1.34311165  1  118.6397765  1   -0.0448367  1     3     2     1
  C     1.41151690  1  121.1792294  1    0.0134513  1     4     3     2
  N     1.34899774  1  120.3503301  1    0.0410972  1     5     4     3
  C     1.48870602  1  122.1144535  1 -179.9831515  1     1     2     3
  C     1.48872316  1  122.0649013  1 -179.9894773  1     2     1     3
  C     1.48795428  1  121.7841851  1 -179.9328020  1     5     4     6
  H     1.09293559  1  116.5892398  1  179.9923455  1     4     3     5
  H     1.10017844  1  111.4502460  1   59.3752970  1     7     1     2
  H     1.10433279  1  111.6960474  1  119.7948387  1     7     1    11
  H     1.10030206  1  111.3792762  1  119.6936436  1     7     1    12
  H     1.09988963  1  111.4905937  1  -59.6153591  1     8     2     1
  H     1.10439583  1  111.6117962  1 -119.7222904  1     8     2    14
  H     1.09999526  1  111.4244296  1 -119.6385903  1     8     2    15
  H     1.10007227  1  111.5203005  1  -58.2896569  1     9     5     4
  H     1.10041253  1  111.3795229  1  120.5932179  1     9     5    17
  H     1.10428298  1  111.7376465  1  119.5971029  1     9     5    18