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151 Cyclopentadiene

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  #           Species Formula
  141 IsobutaneC4H10
  142 n-Butane, transC4H10
  143 t-butyl lithium (Geo)C4H9Li
  144 n-Butyl lithium (Geo)C4H9Li
  145 n-Butyl lithiumC4H9Li
  146 t-Butyl lithiumC4H9Li
  147 DiethylberylliumCH10Be4
  148 C4B2H6C4H6B2
  149 Cyclopentadienyl, anionC5H5
  150 Cyclopentadiene (Geo)C5H6
  151 Cyclopentadiene C5H6
  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 cyclobutaneC5H8
  160 Spiropentane (Geo)C5H8
  161 SpiropentaneC5H8



DHf: 32.1 kcal/mol,     REF: J. B. Pedley, B. S. Iseard, "CATCH Tables of Silicon Compounds," University of Sussex, 1972
Dipole: 0.4 Debye,     REF: R. D. Nelson, D. R. Lide, A. A. Maryott, Nat. Stand. Ref. Data Set., Natl. Bur. Stand. No. 10 (1967).
I.P.: 8.6 eV,     REF: R. D. Levin, S. G. Lias, "Ionization Potentials and Appearance Potential Measurements," 1971-1981, Natl. Stand. Ref. Data Ser., Natl. Bur. Stand. 71, (1982), Cat. No. C13.48:71.

  
 SYMMETRY
Cyclopentadiene
 D=0.42 I=8.57 IR=LLNBS82 H=32.1 HR=CATCH DR=NLM1967
  C         0.00000000 +0    0.0000000 +0    0.0000000 +0                      0.0000
 XX         0.73772507 +1    0.0000000 +0    0.0000000 +0    1    0    0
 XX         1.00000000 +0   90.0000000 +0    0.0000000 +0    2    1    0
  C         0.73772507 +0   90.0000000 +0  180.0000000 +0    2    3    1       0.0000
  C         1.35230343 +1  109.1824306 +1    0.0000000 +0    4    1    3       0.0000
  C         1.35230343 +0  109.1824306 +0    0.0000000 +0    1    4    5       0.0000
  C         2.22623189 +1   90.0000000 +0    0.0000000 +0    2    1    6       0.0000
  H         1.07221210 +1  128.8633667 +1  180.0000000 +0    6    1    4       0.0000
  H         1.07431345 +1  128.1901442 +1  180.0000000 +0    1    6    7       0.0000
  H         1.07431345 +0  128.1901442 +0  180.0000000 +0    4    5    7       0.0000
  H         1.07221210 +0  128.8633667 +0  180.0000000 +0    5    4    1       0.0000
  H         1.10513843 +1  126.4797603 +1   90.0000000 +0    7    2    1       0.0000
  H         1.10513843 +0  126.4797603 +0  -90.0000000 +0    7    2    1       0.0000