Accuracy

2,2-bipyridyl    658 2,2-Bipyridyl

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    #  Species Formula
   648 1,4-Dimethyl-2,3-diaza-bicyclo[2.2.2]oct-2-eneC8H14N2
   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-Bipyridyl C10H8N2
   659 2,4-BipyridylC10H8N2
   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


ΔHf: 69.1 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
2,2-Bipyridyl
 H=69.1 HR=NIST
  C     0.00000000 +0    0.0000000 +0    0.0000000 +0     0     0     0
  C     1.39233441 +1    0.0000000 +0    0.0000000 +0     1     0     0
  C     1.39313994 +1  119.3580852 +1    0.0000000 +0     2     1     0
  C     1.40361757 +1  118.7301701 +1   -0.0197748 +1     3     2     1
  N     1.35346870 +1  122.0427421 +1   -0.0103260 +1     4     3     2
  C     1.34222679 +1  118.7200377 +1    0.0135336 +1     5     4     3
  C     1.48137720 +1  121.7905174 +1  179.9829871 +1     4     3     5
  N     1.35343415 +1  116.2007745 +1    0.0101480 +1     7     4     3
  C     1.34230149 +1  118.7176546 +1  179.9964271 +1     8     7     4
  C     1.40238789 +1  122.7244921 +1   -0.0091622 +1     9     8     7
  C     1.39230321 +1  118.4127560 +1   -0.0033447 +1    10     9     8
  C     1.39298456 +1  119.3775048 +1    0.0084481 +1    11    10     9
  H     1.08528555 +1  121.1006162 +1  179.9973802 +1     1     2     3
  H     1.08950680 +1  120.5100019 +1 -179.9990988 +1     2     1     3
  H     1.09199877 +1  121.3468528 +1 -179.9998334 +1     3     2     4
  H     1.09622308 +1  115.5765697 +1 -179.9942440 +1     6     5     4
  H     1.09624326 +1  115.5639933 +1  179.9986561 +1     9     8    10
  H     1.08956601 +1  120.5036612 +1 -179.9969774 +1    11    10    12
  H     1.09201257 +1  121.3456457 +1 -179.9933195 +1    12    11    10
  H     1.08525211 +1  120.4654964 +1  179.9960365 +1    10     9    11