PM7 Accuracy

bicyclo(2.1.0)-pentane    152 Bicyclo(2.1.0)-pentane

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    #  Species Formula
   142 t-Butyl lithiumH9LiC4
   143 DiethylberylliumH10BeC4
   144 C4B2H6C4H6B2
   145 Cyclopentadienyl, anionC5H5
   146 Cyclopentadiene (Geo)C5H6
   147 CyclopentadieneC5H6
   148 1,2-Dimethyl cyclopropeneC5H8
   149 1,4-PentadieneC5H8
   150 1,cis-3-PentadieneC5H8
   151 1,trans-3-PentadieneC5H8
   152 Bicyclo(2.1.0)-pentane C5H8
   153 CyclopenteneC5H8
   154 IsopreneC5H8
   155 Methylene cyclobutaneC5H8
   156 Spiropentane (Geo)C5H8
   157 SpiropentaneC5H8
   158 Cyclopentyl, cationC5H9
   159 2-Methyl-2-buteneC5H10
   160 cis-2-PenteneC5H10
   161 cis-DimethylcyclopropaneC5H10
   162 CyclopentaneC5H10


DHf: 37.3 kcal/mol,     REF: R. B. Turner, P. Goebel, B. J. Mallon, W. von E. Doering, J. F. Coburn, M. Pomerantz, J. Am. Chem. Soc., 90, 4315 (1968).
  
 SYMMETRY PM7
Bicyclo(2.1.0)-pentane
 H=37.3 HR=TGMD1968
 XX     0.00000000  0    0.0000000  0    0.0000000  0     0     0     0
 XX     1.54161184  1    0.0000000  0    0.0000000  0     1     0     0
  C     0.76953913  1   90.0000000  0    0.0000000  0     2     1     0
  C     0.78508141  1   90.0000000  0    0.0000000  0     1     2     3
  C     0.78508141  0   90.0000000  0  180.0000000  0     1     2     3
  C     0.76953913  0   90.0000000  0  180.0000000  0     2     1     4
  C     1.30347877  1  114.5126191  1   90.0000000  0     2     1     4
  H     1.08532011  1  126.1708889  1    0.0000000  0     7     2     1
  H     1.08695173  1  123.6921004  1  180.0000000  0     7     2     1
  H     1.06854891  1  130.7301536  1 -135.0467092  1     3     2     1
  H     1.06854891  0  130.7301536  0  135.0475031  1     6     2     1
  H     1.09182311  1  113.8718216  1  115.9441012  1     4     1     2
  H     1.09109133  1  115.0205297  1 -117.6675442  1     4     1     2
  H     1.09182311  0  113.8718216  0 -115.9439622  1     5     1     2
  H     1.09109133  0  115.0205297  0  117.6672356  1     5     1     2
 
   3  1    6
   4  1    5
  10  1   11
  10  2   11
  12  1   14
  12  2   14
  13  1   15
  13  2   15