Accuracy

1,2-dimethyl cyclopentene    207 1,2-Dimethyl cyclopentene

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    #  Species Formula
   197 2-Methyl pentaneC6H14
   198 3-Methyl pentaneC6H14
   199 n-HexaneC6H14
   200 Phenyl lithiumH5LiC6
   201 TriethylboraneH15BC6
   202 Benzyl, cationC7H7
   203 Tropylium, cationC7H7
   204 CycloheptatrieneC7H8
   205 NorbornadieneC7H8
   206 TolueneC7H8
   207 1,2-Dimethyl cyclopentene C7H12
   208 1-Ethyl cyclopenteneC7H12
   209 1-Methyl cyclohexeneC7H12
   210 NorbornaneC7H12
   211 1,1-Dimethyl cyclopentaneC7H14
   212 1,2-cis-Dimethyl cyclopentaneC7H14
   213 1,2-trans-Dimethyl cyclopentaneC7H14
   214 1,3-cis-Dimethyl cyclopentaneC7H14
   215 1-HepteneC7H14
   216 Ethyl cyclopentaneC7H14
   217 Methyl-cyclohexaneC7H14


ΔHf: -9.9 kcal/mol,     REF: NIST Chemistry WebBook, NIST Standard Reference Database, No. 69; W. G. Mallard, P. J. Linstrom, Eds., National Institute of Standards and Technology, Gaithersberg, http://webbook.nist.gov/chemistry.
  
 PM7
1,2-Dimethyl cyclopentene
 H=-9.89 HR=NIST
  C     0.00000000 +0    0.0000000 +0    0.0000000 +0     0     0     0
  C     1.50759734 +1    0.0000000 +0    0.0000000 +0     1     0     0
  C     1.54915169 +1  104.9442564 +1    0.0000000 +0     2     1     0
  C     1.54913575 +1  106.0175094 +1   -0.0443683 +1     3     2     1
  C     1.34283459 +1  112.0438873 +1    0.0504944 +1     1     2     3
  C     1.47882110 +1  119.1746992 +1  179.9686307 +1     1     2     5
  H     1.10274469 +1  111.2144770 +1 -120.7059165 +1     2     1     3
  H     1.10272954 +1  111.2321312 +1 -118.5773038 +1     2     1     7
  H     1.09973971 +1  111.0332800 +1 -120.7169699 +1     3     2     4
  H     1.10272050 +1  111.5051884 +1  120.5563547 +1     4     3     2
  H     1.10031722 +1  111.2670180 +1  -59.7915229 +1     6     1     2
  H     1.10032487 +1  111.2797298 +1  119.5392927 +1     6     1    11
  C     1.47890470 +1  128.7606682 +1  179.9910308 +1     5     1     2
  H     1.10269194 +1  111.4987686 +1  118.9667807 +1     4     3    10
  H     1.09977065 +1  111.0366727 +1 -118.5714042 +1     3     2     9
  H     1.09870893 +1  112.5861317 +1  120.2260063 +1     6     1    12
  H     1.10031198 +1  111.2672449 +1 -120.3700070 +1    13     5     1
  H     1.10033471 +1  111.2705902 +1 -119.5488203 +1    13     5    17
  H     1.09867376 +1  112.5808973 +1 -120.2184049 +1    13     5    18