PM7 Accuracy

2,6-diphenyl-1,6-heptadiene    392 2,6-Diphenyl-1,6-heptadiene

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    #  Species Formula
   382 3,4,5,6-TetramethylphenanthreneC18H18
   383 [3.3]ParacyclophaneC18H20
   384 1,1'-(1,1,2,2-Tetramethyl-1,2-ethanediyl)bis-benzeneC18H22
   385 DodecylcyclohexaneC18H36
   386 n-TridecylcyclopentaneC18H36
   387 1,1,2,2-Tetra-t-butylethaneC18H38
   388 OctadecaneC18H38
   389 TriphenylboraneH15BC18
   390 TricyclohexylboraneH33BC18
   391 Tri-n-hexylboraneH39BC18
   392 2,6-Diphenyl-1,6-heptadiene C19H20
   393 n-TetradecylcyclopentaneC19H38
   394 n-TridecylcyclohexaneC19H38
   395 NonadecaneC19H40
   396 9,10-Dihydro-9,10[1',2']benzanthraceneC20H14
   397 3,9-Dimethylbenz[a]anthraceneC20H16
   398 5,6-Dimethyl chryseneC20H16
   399 9,10-Dimethyl-1,2-benzanthraceneC20H16
   400 1,3,5-Tri-tert-butyl pentaleneC20H30
   401 HexacyclopropylethaneC20H30
   402 Tetra-tert-butyltetrahedraneC20H36


DHf: 61.9 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
2,6-Diphenyl-1,6-heptadiene
 H=61.9 HR=NIST
  C     0.00000000  0    0.0000000  0    0.0000000  0     0     0     0
  C     1.39292670  1    0.0000000  0    0.0000000  0     1     0     0
  C     1.39404178  1  120.1031238  1    0.0000000  0     2     1     0
  C     1.39399464  1  120.0112874  1   -0.0125510  1     3     2     1
  C     1.39278425  1  120.0922636  1   -0.0833422  1     4     3     2
  C     1.39606369  1  119.8247544  1    0.1511142  1     1     2     3
  C     1.47558830  1  119.9932273  1  179.3742688  1     6     1     2
  C     1.49805576  1  113.1693146  1  -86.0797626  1     7     6     1
  C     2.51658324  1  148.6525647  1 -170.6796636  1     8     7     6
  C     1.49833155  1  148.6690837  1   -3.3018497  1     9     8     7
  C     1.47546966  1  113.2424055  1 -168.8038047  1    10     9     8
  C     1.39610159  1  119.8796652  1   94.9782392  1    11    10     9
  C     1.39613135  1  119.9811399  1 -179.5918575  1    11    10    12
  C     1.39288252  1  119.8250606  1  179.5810904  1    13    11    10
  C     1.39402325  1  120.0978624  1   -0.0501308  1    14    13    11
  C     1.39282536  1  119.8267325  1 -179.5517339  1    12    11    10
  C     1.33363918  1  120.8439725  1  179.7202607  1     7     6     8
  C     1.33367120  1  125.9476007  1 -179.6034519  1    10     9    11
  H     1.08801338  1  120.2898360  1 -179.8440035  1     1     2     6
  H     1.08821228  1  119.9015833  1  179.8948820  1     2     1     3
  H     1.08767489  1  119.9844770  1  179.9767114  1     3     2     4
  H     1.08822389  1  120.0009997  1  179.9713904  1     4     3     5
  H     1.08814582  1  120.3339614  1  179.9019672  1     5     4     3
  H     1.11205995  1  109.2860277  1  121.6872649  1     8     7     9
  H     1.11218277  1  108.8666642  1  114.3787544  1     8     7    24
  H     1.11224186  1   89.9172521  1  128.0876545  1     9     8    10
  H     1.11210715  1   88.7259191  1  105.2273096  1     9     8    26
  H     1.08818302  1  119.8617352  1 -179.8642500  1    12    11    16
  H     1.08807779  1  119.8989402  1  179.7572848  1    13    11    14
  H     1.08820934  1  119.9149661  1  179.9688209  1    14    13    15
  H     1.08765816  1  119.9839967  1 -179.9854084  1    15    14    13
  H     1.08817347  1  119.9120358  1 -179.9635428  1    16    12    11
  H     1.07948323  1  122.9917500  1    0.0267598  1    17     7     6
  H     1.07689295  1  124.4810519  1 -179.9131036  1    17     7    33
  H     1.07945974  1  122.9946904  1  179.6241774  1    18    10     9
  H     1.07691812  1  124.4687984  1 -179.8671732  1    18    10    35
  C     1.53274645  1   34.8412272  1  128.2062251  1     9     8    27
  H     1.10715821  1  109.8299115  1 -121.6404489  1    37     9     8
  H     1.10723323  1  110.1958148  1 -116.9740107  1    37     9    38