Accuracy

2,4-bipyridyl    659 2,4-Bipyridyl

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    #  Species Formula
   649 3,4,5,6-Tetrahydro-3,3,6,6-tetramethylpyridazineC8H16N2
   650 Di-n-butyldiazeneC8H18N2
   651 Di-tert-butyldiazeneC8H18N2
   652 1,2-DibutylhydrazineC8H20N2
   653 3-QuinolinamineC9H8N2
   654 5-QuinolinamineC9H8N2
   655 6-QuinolinamineC9H8N2
   656 8-QuinolinamineC9H8N2
   657 2-(Diethylamino)-pentanenitrileC9H18N2
   658 2,2-BipyridylC10H8N2
   659 2,4-Bipyridyl C10H8N2
   660 4,4'-BipyridineC10H8N2
   661 2,3-Dimethyl quinoxalineC10H10N2
   662 alpha N,N-dimethylamino phenylacetonitrileC10H12N2
   663 Ethyl(1,1-dimethylpropyl)malonodinitrileC10H16N2
   664 Meso-2,3-diethyl-2,3-dimethylsuccinodinitrileC10H16N2
   665 Methyl(1,1,2-trimethylpropyl)malonodinitrileC10H16N2
   666 PhenazineC12H8N2
   667 PhenazoneC12H8N2
   668 cis-AzobenzeneC12H10N2
   669 Diphenyl diazeneC12H10N2


ΔHf: 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