PM7 Accuracy

1,2,4,5-tetramethylbenzene    295 1,2,4,5-Tetramethyl benzene

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    #  Species Formula
   285 DiisopropenyldiacetyleneC10H10
   286 Tricyclo[6.2.0.0]deca-1(8),2,6-trieneC10H10
   287 1,2,6,7-CyclodecatetraeneC10H12
   288 Dispiro[2.2.2.2]deca-4,9-dieneC10H12
   289 TetralinC10H12
   290 (1-Methylpropyl) benzeneC10H14
   291 (2-Methylpropyl) benzeneC10H14
   292 1,2,3,4-Tetramethyl benzeneC10H14
   293 1,2,3,4-TetramethylfulveneC10H14
   294 1,2,3,5-Tetramethyl benzeneC10H14
   295 1,2,4,5-Tetramethyl benzene C10H14
   296 tert-Butyl benzeneC10H14
   297 TetrahydrotriquinaceneC10H14
   298 1,2,3,4,5-Pentamethyl-1,3-cyclopentadieneC10H16
   299 AdamantaneC10H16
   300 CampheneC10H16
   301 PerhydrotriquinaceneC10H16
   302 1-Methyl-4-(1-methylethyl)-cyclohexeneC10H18
   303 4-Methyl-1-(1-methylethyl)-cyclohexeneC10H18
   304 cis-DecalinC10H18
   305 Spiro(4-5)decaneC10H18


DHf: -11.3 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
1,2,4,5-Tetramethyl benzene
 H=-11.3 HR=NIST
  C     0.00000000  0    0.0000000  0    0.0000000  0     0     0     0
  C     1.39162917  1    0.0000000  0    0.0000000  0     1     0     0
  C     1.39974698  1  121.3888473  1    0.0000000  0     2     1     0
  C     1.39702422  1  119.2884949  1   -0.0030895  1     3     2     1
  C     1.39974613  1  119.2826229  1   -0.0167559  1     4     3     2
  C     1.39159248  1  121.3823988  1    0.0043650  1     5     4     3
  C     1.49210054  1  119.8609529  1 -179.9473810  1     6     5     4
  C     1.49207018  1  119.8684893  1 -179.9784926  1     1     2     3
  H     1.08854631  1  119.5239164  1  179.9834439  1     2     1     3
  C     1.49324467  1  117.3758381  1 -179.9660401  1     3     2     4
  C     1.49329634  1  123.3337697  1 -179.9946382  1     4     3     5
  H     1.08848248  1  119.0719811  1 -179.9813310  1     5     4     6
  H     1.09993369  1  111.1928332  1  119.8957501  1     7     6     5
  H     1.09994249  1  111.2199825  1  119.5881146  1     7     6    13
  H     1.09775144  1  112.6598624  1  120.2110878  1     7     6    14
  H     1.09994698  1  111.2121510  1  120.2409882  1     8     1     2
  H     1.09994478  1  111.1990351  1  119.5982006  1     8     1    16
  H     1.09777012  1  112.6648351  1  120.1979655  1     8     1    17
  H     1.09988246  1  111.0183943  1   60.1508085  1    10     3     2
  H     1.09997102  1  111.0269635  1 -119.4810085  1    10     3    19
  H     1.09764229  1  113.3879220  1 -120.2122461  1    10     3    20
  H     1.09986582  1  111.0332969  1 -120.3617766  1    11     4     3
  H     1.09994071  1  111.0040456  1 -119.5160325  1    11     4    22
  H     1.09762829  1  113.3771218  1 -120.1949934  1    11     4    23