PM7 Accuracy

1,1,2,2-tetraphenylethane    421 1,1,2,2-Tetraphenylethane

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    #  Species Formula
   411 DL-3,4-di-1-cyclohexen-1-yl-2,2,5,5-tetramethyl hexaneC22H38
   412 Meso-3,4-di-1-cyclohexen-1-yl-2,2,5,5-tetramethyl hexaneC22H38
   413 n-HexadecylcyclohexaneC22H44
   414 p-QuaterphenylC24H18
   415 1,1'-Diphenyl-1,1'-bicyclohexylC24H30
   416 6,6'-ParacyclophaneC24H32
   417 Tri-n-octylboraneH51BC24
   418 TetraphenylmethaneC25H20
   419 9,9'-Bi-9H-fluoreneC26H18
   420 1,1,1,2-TetraphenylethaneC26H22
   421 1,1,2,2-Tetraphenylethane C26H22
   422 Pentacyclo hexacosa nonaneC26H26
   423 2,3-Dimethyl-2,3-bis(4-t-butylphenyl)butaneC26H38
   424 11-n-butyl docosaneC26H54
   425 5-n-butyl docosaneC26H54
   426 9,9'-Dimethyl-9,9'-bifluoreneC28H22
   427 1,1-Diphenyl-1,1-bicyclooctylC28H38
   428 11-Decyl heneicosaneC31H64
   429 2,4,5,7-Tetramethyl-4,5-bis(4-t-butylphenyl) octaneC32H50
   430 DotriacontaneC32H66
   431 4,5-Dipropyl-4,5-bis(4-t-butylphenyl) octaneC34H54


DHf: 85.4 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
1,1,2,2-Tetraphenylethane
 H=85.4 HR=NIST
  C     0.00000000  0    0.0000000  0    0.0000000  0     0     0     0
  C     1.55391952  1    0.0000000  0    0.0000000  0     1     0     0
  C     1.50936570  1  108.8318772  1    0.0000000  0     2     1     0
  C     1.50708921  1  113.5304960  1 -122.5842109  1     2     1     3
  C     1.50936844  1  108.8768576  1  -63.4865058  1     1     2     3
  C     1.50708725  1  113.6578797  1  174.0397129  1     1     2     3
  C     1.39586974  1  120.9106402  1  -74.5329649  1     3     2     1
  C     1.39661997  1  119.3165578  1  104.1498031  1     3     2     1
  C     1.39848064  1  118.1051923  1 -152.0536899  1     4     2     1
  C     1.39534800  1  122.4127442  1   28.4389024  1     4     2     1
  C     1.39638309  1  119.3622691  1  105.0068800  1     5     1     2
  C     1.39587063  1  120.8488288  1  -73.7664911  1     5     1     2
  C     1.39519334  1  122.4731285  1   27.5105452  1     6     1     2
  C     1.39848336  1  118.0435831  1 -153.1098282  1     6     1     2
  C     1.39243126  1  120.0615091  1  178.3417054  1     7     3     2
  C     1.39275863  1  120.0516574  1 -178.2442130  1     8     3     2
  C     1.39180030  1  120.2309383  1 -179.8187193  1     9     4     2
  C     1.39341044  1  120.1818269  1  179.9412147  1    10     4     2
  C     1.39283044  1  120.0470815  1 -178.3328460  1    11     5     1
  C     1.39231854  1  120.0458593  1  178.4079473  1    12     5     1
  C     1.39340171  1  120.1782860  1  179.8360792  1    13     6     1
  C     1.39169283  1  120.2351870  1 -179.6882575  1    14     6     1
  C     1.39380499  1  120.1356063  1   -0.0247237  1    15     7     3
  C     1.39395914  1  120.1294305  1   -0.0419342  1    17     9     4
  C     1.39350840  1  120.1162412  1   -0.1825056  1    19    11     5
  C     1.39269453  1  120.2179355  1   -0.2821333  1    21    13     6
  H     1.12450442  1  107.2504368  1   54.3899544  1     1     2     3
  H     1.12452322  1  107.2772270  1   54.3358477  1     2     1     5
  H     1.08883241  1  120.0439634  1   -2.2361769  1     7     3     2
  H     1.08827131  1  120.2045555  1    0.9123748  1     8     3     2
  H     1.08816458  1  120.0125212  1   -0.2621407  1     9     4     2
  H     1.08829886  1  120.5331446  1   -1.0067135  1    10     4     2
  H     1.08824898  1  120.2150122  1    0.8444347  1    11     5     1
  H     1.08887705  1  120.0234183  1   -2.2146204  1    12     5     1
  H     1.08830612  1  120.5396882  1   -1.0725507  1    13     6     1
  H     1.08812745  1  120.0078608  1   -0.1471113  1    14     6     1
  H     1.08775893  1  119.8728447  1  179.9028560  1    15     7     3
  H     1.08782023  1  119.8623472  1  179.5617853  1    16     8     3
  H     1.08782897  1  119.9195911  1  179.9688950  1    17     9     4
  H     1.08793847  1  119.7636936  1  179.5326171  1    18    10     4
  H     1.08776995  1  119.8604272  1  179.5990226  1    19    11     5
  H     1.08776242  1  119.8742147  1  179.9359986  1    20    12     5
  H     1.08797465  1  119.7628564  1  179.5093430  1    21    13     6
  H     1.08781275  1  119.9184664  1  179.9308292  1    22    14     6
  H     1.08704377  1  120.0757636  1 -179.7934573  1    23    15     7
  H     1.08690051  1  120.1028794  1 -179.7346234  1    24    17     9
  H     1.08704818  1  120.0420119  1  179.9144543  1    25    19    11
  H     1.08688902  1  120.1336408  1  179.9056543  1    26    21    13