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159 Methylene cyclobutane

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  #           Species Formula
  149 Cyclopentadienyl, anionC5H5
  150 Cyclopentadiene (Geo)C5H6
  151 CyclopentadieneC5H6
  152 1,2-Dimethyl cyclopropeneC5H8
  153 1,4-PentadieneC5H8
  154 1,cis-3-PentadieneC5H8
  155 1,trans-3-PentadieneC5H8
  156 Bicyclo(2.1.0)-pentaneC5H8
  157 CyclopenteneC5H8
  158 IsopreneC5H8
  159 Methylene cyclobutane C5H8
  160 Spiropentane (Geo)C5H8
  161 SpiropentaneC5H8
  162 Cyclopentyl, cationC5H9
  163 2-Methyl-2-buteneC5H10
  164 cis-2-PenteneC5H10
  165 cis-DimethylcyclopropaneC5H10
  166 CyclopentaneC5H10
  167 trans-2-PenteneC5H10
  168 Neopentyl, anionC5H11
  169 n-PentaneC5H12



DHf: 29.1 kcal/mol,     REF: W. D. Good, R. T. Moore, A. G. Osborn, D. R. Douslin, J. Chem. Thermodyn., 6, 303 (1974).

  
 SYMMETRY
Methylene cyclobutane
 H=29.1 HR=GMOD1974
  C         0.00000000 +0    0.0000000 +0    0.0000000 +0                      0.0000
  C         1.32162568 +1    0.0000000 +0    0.0000000 +0    1    0    0       0.0000
  C         1.51361684 +1  133.7658630 +1    0.0000000 +0    2    1    0       0.0000
  C         1.51361684 +0  133.7658630 +0  180.0000000 +0    2    1    3       0.0000
 XX         1.00000000 +0   90.0000000 +0  180.0000000 +0    2    1    4
  C         2.14926379 +1   90.0000000 +0  180.0000000 +0    2    5    1       0.0000
  H         1.07842453 +1  123.3424091 +1  180.0000000 +0    1    2    3       0.0000
  H         1.07842453 +0  123.3424091 +0    0.0000000 +0    1    2    3       0.0000
  H         1.09651530 +1  126.0932161 +1   90.0000000 +0    3    4    2       0.0000
  H         1.09651530 +0  126.0932161 +0  -90.0000000 +0    3    4    2       0.0000
  H         1.09651530 +0  126.0932161 +0  -90.0000000 +0    4    3    2       0.0000
  H         1.09651530 +0  126.0932161 +0   90.0000000 +0    4    3    2       0.0000
  H         1.09389603 +1  125.8597421 +1   90.0000000 +0    6    2    5       0.0000
  H         1.09389603 +0  125.8597421 +0  -90.0000000 +0    6    2    5       0.0000