Accuracy

1,2,4,5-tetramethylbenzene    293 1,2,4,5-Tetramethyl benzene

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


ΔHf: -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