PM7 Accuracy

1,1,1,2-tetraphenylethane    420 1,1,1,2-Tetraphenylethane

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    #  Species Formula
   410 1,1'-Diphenyl-1,1'-bicyclopentylC22H26
   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-Tetraphenylethane C26H22
   421 1,1,2,2-TetraphenylethaneC26H22
   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


DHf: 87.3 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
1,1,1,2-Tetraphenylethane
 H=87.3 HR=NIST
  C     0.00000000  0    0.0000000  0    0.0000000  0     0     0     0
  C     1.55867263  1    0.0000000  0    0.0000000  0     1     0     0
  C     1.52081934  1  112.9425829  1    0.0000000  0     2     1     0
  C     1.52507320  1  111.3783683  1  115.1311058  1     2     1     3
  C     1.51926622  1  104.7287535  1  120.3880462  1     2     1     4
  C     1.49978066  1  113.0608058  1   74.6417946  1     1     2     3
  C     1.39727400  1  120.6127732  1   34.5601883  1     3     2     1
  C     1.39825364  1  120.4030808  1  175.2645724  1     3     2     7
  C     1.39418120  1  122.1823364  1  -20.2274227  1     4     2     1
  C     1.40031953  1  118.6614826  1 -177.0329811  1     4     2     9
  C     1.39795995  1  120.7808512  1   88.3741003  1     5     2     1
  C     1.39705860  1  119.9659578  1 -175.4760040  1     5     2    11
  C     1.39791056  1  119.5187824  1  103.7671731  1     6     1     2
  C     1.39587043  1  120.9298375  1  179.9223729  1     6     1    13
  C     1.39293345  1  120.5692970  1  177.7444178  1     7     3     2
  C     1.39220739  1  120.6000258  1 -177.7856036  1     8     3     2
  C     1.39506399  1  120.2691360  1 -177.7109845  1     9     4     2
  C     1.39034239  1  120.6128213  1  177.7767067  1    10     4     2
  C     1.39200974  1  120.4911951  1 -177.1966311  1    11     5     2
  C     1.39275794  1  120.3808966  1  177.1355945  1    12     5     2
  C     1.39225234  1  120.1992094  1 -179.2430929  1    13     6     1
  C     1.39276119  1  120.1410043  1  179.1310036  1    14     6     1
  C     1.39320317  1  120.1798562  1    0.8709254  1    16     8     3
  C     1.39138890  1  120.3671109  1    0.2891434  1    17     9     4
  C     1.39293751  1  120.2063356  1   -0.4931217  1    20    12     5
  C     1.39383906  1  120.1012821  1   -0.1812701  1    21    13     6
  H     1.10866249  1  110.5243620  1 -123.3598824  1     1     2     6
  H     1.11223853  1  107.9047784  1 -114.7877795  1     1     2    27
  H     1.08896017  1  120.4167041  1 -179.1990240  1     7     3    15
  H     1.09031007  1  120.2518376  1  179.5000179  1     8     3    16
  H     1.08763488  1  121.0797748  1  179.5291919  1     9     4    17
  H     1.09025855  1  119.7507430  1 -179.8611412  1    10     4    18
  H     1.09132108  1  120.0197688  1  178.4285016  1    11     5    19
  H     1.08971106  1  120.1666453  1 -179.8072418  1    12     5    20
  H     1.08824717  1  120.0089653  1  178.9013419  1    13     6    21
  H     1.08877090  1  120.1656594  1 -179.2884596  1    14     6    22
  H     1.08788498  1  119.7557879  1  179.5353177  1    15     7     3
  H     1.08812865  1  119.7637672  1  179.7221709  1    16     8    23
  H     1.08789090  1  119.6510884  1  179.8107354  1    17     9    24
  H     1.08814895  1  119.9234100  1  179.9693709  1    18    10     4
  H     1.08785010  1  119.7389528  1 -179.9801750  1    19    11     5
  H     1.08763447  1  119.7570392  1 -179.8099553  1    20    12    25
  H     1.08761517  1  119.8731467  1  179.6178681  1    21    13    26
  H     1.08782078  1  119.8063609  1 -179.5025837  1    22    14     6
  H     1.08663663  1  120.2031913  1 -179.7545570  1    23    16     8
  H     1.08689442  1  120.2589669  1  179.9478347  1    24    17     9
  H     1.08672264  1  120.1911045  1  179.9394668  1    25    20    12
  H     1.08685815  1  120.0592073  1  179.6580582  1    26    21    13