PM7 Accuracy

1,2,3,4-tetramethyl benzene    292 1,2,3,4-Tetramethyl benzene

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    #  Species Formula
   282 1-Butynl benzeneC10H10
   283 2a,4a,6a,6b-TetrahydrocyclopentapentaleneC10H10
   284 BulvaleneC10H10
   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 benzene C10H14
   293 1,2,3,4-TetramethylfulveneC10H14
   294 1,2,3,5-Tetramethyl benzeneC10H14
   295 1,2,4,5-Tetramethyl benzeneC10H14
   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


DHf: -8.6 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
1,2,3,4-Tetramethyl benzene
 H=-8.61 HR=NIST
  C     0.00000000  0    0.0000000  0    0.0000000  0     0     0     0
  C     1.38530211  1    0.0000000  0    0.0000000  0     1     0     0
  C     1.40005797  1  120.4908208  1    0.0000000  0     2     1     0
  C     1.39732463  1  119.4859614  1   -0.0439676  1     3     2     1
  C     1.40956065  1  120.0021171  1   -0.0236764  1     4     3     2
  C     1.39715033  1  120.0120120  1    0.0644407  1     5     4     3
  H     1.08798255  1  119.8576952  1 -179.9602352  1     1     2     3
  H     2.14880603  1  100.5122625  1 -155.1514686  1     3     2     4
  H     1.77341254  1   65.6306355  1  -94.6956719  1     8     3     2
  H     1.76426292  1   59.8162801  1  -76.3892597  1     9     8     3
  H     1.08793518  1  119.8612923  1  179.9752732  1     2     1     3
  C     1.09985560  1   36.3098406  1   38.8828057  1     9     8    10
  C     1.49472831  1  121.5162606  1 -179.9653381  1     4     3     5
  C     1.49472419  1  118.4811311  1 -179.9669405  1     5     4     6
  C     1.49417730  1  123.6477151  1  179.9471555  1     6     5     4
  H     1.09999119  1  111.1710606  1 -120.9571612  1    13     4     3
  H     1.10009080  1  111.0836607  1 -119.8555236  1    13     4    16
  H     1.09805578  1  113.3717314  1 -120.0530754  1    13     4    17
  H     1.10001395  1  111.1417544  1   59.5103468  1    14     5     4
  H     1.10009637  1  111.1227191  1 -119.8569964  1    14     5    19
  H     1.09805539  1  113.3720337  1 -120.0628800  1    14     5    20
  H     1.09990236  1  110.9409073  1  119.8764533  1    15     6     5
  H     1.10001368  1  110.9394128  1  119.4064587  1    15     6    22
  H     1.09754097  1  113.6307546  1  120.2401743  1    15     6    23