PM7 Accuracy

2,4-bipyridyl    662 2,4-Bipyridyl

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    #  Species Formula
   652 3,4,5,6-Tetrahydro-3,3,6,6-tetramethylpyridazineC8H16N2
   653 Di-n-butyldiazeneC8H18N2
   654 Di-tert-butyldiazeneC8H18N2
   655 1,2-DibutylhydrazineC8H20N2
   656 3-QuinolinamineC9H8N2
   657 5-QuinolinamineC9H8N2
   658 6-QuinolinamineC9H8N2
   659 8-QuinolinamineC9H8N2
   660 2-(Diethylamino)-pentanenitrileC9H18N2
   661 2,2-BipyridylC10H8N2
   662 2,4-Bipyridyl C10H8N2
   663 4,4'-BipyridineC10H8N2
   664 2,3-Dimethyl quinoxalineC10H10N2
   665 alpha N,N-dimethylamino phenylacetonitrileC10H12N2
   666 Ethyl(1,1-dimethylpropyl)malonodinitrileC10H16N2
   667 Meso-2,3-diethyl-2,3-dimethylsuccinodinitrileC10H16N2
   668 Methyl(1,1,2-trimethylpropyl)malonodinitrileC10H16N2
   669 PhenazineC12H8N2
   670 PhenazoneC12H8N2
   671 cis-AzobenzeneC12H10N2
   672 Diphenyl diazeneC12H10N2


DHf: 67.9 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
2,4-Bipyridyl
 H=67.93 HR=NIST
  C     0.00000000  0    0.0000000  0    0.0000000  0     0     0     0
  C     1.39116001  1    0.0000000  0    0.0000000  0     1     0     0
  C     1.39421927  1  119.5224155  1    0.0000000  0     2     1     0
  C     1.40437906  1  119.0134101  1   -0.0078693  1     3     2     1
  N     1.35511521  1  121.3293767  1    0.0041922  1     4     3     2
  C     1.34112828  1  119.2470015  1    0.0021053  1     5     4     3
  C     1.47673812  1  122.5618828  1 -179.9757330  1     4     3     5
  C     1.39931264  1  120.2339281  1 -179.5086049  1     7     4     3
  C     1.39926764  1  118.9731699  1 -179.9978894  1     8     7     4
  N     1.34596281  1  122.6755002  1    0.0140436  1     9     8     7
  C     1.34512714  1  118.2964652  1    0.0136995  1    10     9     8
  C     1.40048006  1  122.8318018  1   -0.0145993  1    11    10     9
  H     1.08546491  1  121.2423602  1 -179.9910460  1     1     2     3
  H     1.09018780  1  120.4258693  1  179.9921768  1     2     1     3
  H     1.08667065  1  120.0243780  1  179.9768778  1     3     2     4
  H     1.09702568  1  115.5483632  1  179.9957400  1     6     5     4
  H     1.09229334  1  120.4096318  1  179.9927496  1     8     7     9
  H     1.09610310  1  121.5178453  1  179.9989375  1     9     8    10
  H     1.09602664  1  115.7435496  1  179.9997424  1    11    10    12
  H     1.08579972  1  119.5953029  1  179.9746222  1    12    11    10