PM7 Accuracy

3,3,5,5-tetramethyl-1-pyrazoline    641 3,3,5,5-Tetramethyl-1-pyrazoline

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    #  Species Formula
   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 pyrazineC7H10N2
   640 1-PiperidineacetonitrileC7H12N2
   641 3,3,5,5-Tetramethyl-1-pyrazoline C7H14N2
   642 m-DicyanobenzeneC8H4N2
   643 o-DicyanobenzeneC8H4N2
   644 p-DicyanobenzeneC8H4N2
   645 PhthalazineC8H6N2
   646 QuinazolineC8H6N2
   647 QuinoxalineC8H6N2
   648 n-PentylmalonodinitrileC8H12N2
   649 TetramethylbutanedinitrileC8H12N2
   650 TetramethylpyrazineC8H12N2
   651 1,4-Dimethyl-2,3-diaza-bicyclo[2.2.2]oct-2-eneC8H14N2


DHf: 9.4 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
3,3,5,5-Tetramethyl-1-pyrazoline
 H=9.4 HR=NIST
  C     0.00000000  0    0.0000000  0    0.0000000  0     0     0     0
  C     1.55977809  1    0.0000000  0    0.0000000  0     1     0     0
  N     1.50982588  1  103.6841302  1    0.0000000  0     2     1     0
  N     1.22582942  1  114.1737997  1    0.1469989  1     3     2     1
  C     1.50906063  1  114.1527074  1   -0.0210370  1     4     3     2
  C     1.52670840  1  112.4144290  1 -116.6116271  1     2     1     3
  C     1.52637560  1  112.4434356  1 -126.6831782  1     2     1     6
  C     1.52679293  1  108.2937116  1 -119.7056918  1     5     4     3
  C     1.52676983  1  108.2998183  1 -120.8254001  1     5     4     8
  H     1.09814303  1  111.6425163  1 -121.0696275  1     1     2     3
  H     1.09827370  1  111.6077910  1 -118.3619336  1     1     2    10
  H     1.09664356  1  111.8744518  1   52.2852383  1     6     2     1
  H     1.09951036  1  110.9367327  1  119.2770861  1     6     2    12
  H     1.09539708  1  111.2796284  1  119.9106985  1     6     2    13
  H     1.09952675  1  110.9393549  1 -172.0487129  1     7     2     1
  H     1.09681610  1  111.8312921  1  119.0940092  1     7     2    15
  H     1.09524925  1  111.3066944  1  120.8709790  1     7     2    16
  H     1.09670762  1  111.8540316  1   60.7278540  1     8     5     4
  H     1.09526321  1  111.2861274  1  120.8921827  1     8     5    18
  H     1.09950431  1  110.9350952  1  119.9391335  1     8     5    19
  H     1.09526127  1  111.2862337  1  178.6740977  1     9     5     4
  H     1.09677067  1  111.8365236  1  120.8891767  1     9     5    21
  H     1.09946293  1  110.9422603  1  119.1503872  1     9     5    22