PM7 Accuracy

perfluorocyclobutane   1643 Perfluorocyclobutane

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    #  Species Formula
  1633 HexafluorobenzeneC6F6
  1634 HexafluorodimethylamineCN2F6
  1635 Dimethyl perfluoroether (Geo)C2OF6
  1636 Dimethyl perfluoroetherC2OF6
  1637 PerfluoroacetoneC3OF6
  1638 Hexafluoropentanedioic acid, dimethyl esterC7H6O4F6
  1639 Heptafluoromethane triamineCN3F7
  1640 Perfluoropropane (Geo)C3F8
  1641 PerfluoropropaneC3F8
  1642 Perfluorobut-2-eneC4F8
  1643 Perfluorocyclobutane C4F8
  1644 OctafluorotolueneC7F8
  1645 OctafluoromethanetetramineCN4F8
  1646 Perfluorodimethoxymethane (Geo)C3O2F8
  1647 PerfluorodimethoxymethaneC3O2F8
  1648 Perfluoro-n-butane (Geo)C4F10
  1649 n-PerfluorobutaneC4F10
  1650 DecafluorocyclohexeneC6F10
  1651 UndecafluoropiperidineC5NF11
  1652 Tetrakis(difluoroamine)-N-1,1-trifluorodimethylamineC2N5F11
  1653 DodecafluorocyclohexaneC6F12


DHf: -369.5 kcal/mol,     REF: J. O. Cox, G. Pilcher, "Thermochemistry of Organic and Organometallic Compounds," Academic Press, New York, N.Y., 1970.
  
 PM7
Perfluorocyclobutane
 H=-369.5 HR=C&P1970
  C     0.00000000  0    0.0000000  0    0.0000000  0     0     0     0
  C     2.23964140  1    0.0000000  0    0.0000000  0     1     0     0
  C     1.58344070  1   45.0177238  1    0.0000000  0     1     2     0
  C     1.58342358  1   45.0364072  1  179.9786911  1     2     1     3
  F     1.32129864  1  126.8995739  1  -90.0452568  1     1     2     3
  F     1.32138488  1  126.8242418  1   90.0447709  1     1     2     3
  F     1.32132935  1  126.8903296  1   89.9526253  1     2     1     3
  F     1.32141679  1  126.8171733  1  -89.9520393  1     2     1     3
  F     1.32134452  1  115.1116517  1  117.8857947  1     3     1     2
  F     1.32133030  1  115.1453063  1 -117.9335474  1     3     1     2
  F     1.32131452  1  115.1141603  1  117.8846750  1     4     2     1
  F     1.32126952  1  115.1572965  1 -117.9548922  1     4     2     1