Accuracy

cyc4h8r    127 Cyclobutane (Geo)

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    #  Species Formula
   117 2-Butyne (Geo)C4H6
   118 CyclobuteneC4H6
   119 Methyl cyclopropeneC4H6
   120 MethylenecyclopropaneC4H6
   121 1,3-Butadiene (Geo)C4H6
   122 2-Butenyl, cationC4H7
   123 Cyclobutyl, cationC4H7
   124 1-ButeneC4H8
   125 1-Butene (Geo)C4H8
   126 cis-2-ButeneC4H8
   127 Cyclobutane (Geo) C4H8
   128 CyclobutaneC4H8
   129 Isobutene (Geo)C4H8
   130 IsobuteneC4H8
   131 trans-2-Butene (Geo)C4H8
   132 trans-2-ButeneC4H8
   133 Isobutyl, cationC4H9
   134 IsobutylC4H9
   135 n-Butane (Geo)C4H10
   136 Isobutane (Geo)C4H10
   137 IsobutaneC4H10


REF: S. Meiboom, L. C. Snyder, J. Chem. Phys., 52, 3857 (1970).
  
 SYMMETRY PARAM PM7
Cyclobutane
 GR=MS1970 <C-C> < > < > <C1-C2-C4-C3> <C-H>
 
  C     0.00000000 +0    0.0000000 +0    0.0000000 +0     0     0     0
  C     1.54800000 +1    0.0000000 +0    0.0000000 +0     1     0     0
  C     1.54800000 +0   88.9203667 +1    0.0000000 +0     1     2     0
  C     1.54800000 +0   45.9617525 +1  153.0000000 +1     3     2     1
  H     1.10457000 +1  115.3731810 +1  117.7186383 +1     1     2     3
  H     1.09228716 +1  114.2083334 +1 -116.1762627 +1     1     2     3
  H     1.09102748 +1  115.3628603 +1 -136.7433808 +1     4     2     1
  H     1.09168632 +1  113.8883448 +1   96.9671117 +1     4     2     1
  H     1.09026003 +1  115.7440143 +1  136.3765938 +1     2     1     3
  H     1.09153872 +1  114.2287145 +1  -96.4700935 +1     2     1     3
  H     1.09232577 +1  114.0628298 +1   96.7220694 +1     3     1     2
  H     1.09153417 +1  115.6112319 +1 -136.7924567 +1     3     1     2
 
   2  1    3    4