Accuracy

n-pentane    165 n-Pentane

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    #  Species Formula
   155 Methylene cyclobutaneC5H8
   156 Spiropentane (Geo)C5H8
   157 SpiropentaneC5H8
   158 Cyclopentyl, cationC5H9
   159 2-Methyl-2-buteneC5H10
   160 cis-2-PenteneC5H10
   161 cis-DimethylcyclopropaneC5H10
   162 CyclopentaneC5H10
   163 trans-2-PenteneC5H10
   164 IsopentaneC5H12
   165 n-Pentane C5H12
   166 Neopentane (Geo)C5H12
   167 NeopentaneC5H12
   168 Lithium cyclopentadienide (Geo)H5LiC5
   169 Cyclopentadienylberyllium hydrideH6BeC5
   170 C6H5 radicalC6H5
   171 BenzeneC6H6
   172 Benzene (Geo)C6H6
   173 FulveneC6H6
   174 Fulvene (Geo)C6H6
   175 (E)-1,3,5-HexatrieneC6H8


ΔHf: -35.1 kcal/mol,     REF: J. O. Cox, G. Pilcher, "Thermochemistry of Organic and Organometallic Compounds," Academic Press, New York, N.Y., 1970.
I.P.: 10.3 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.
  
 PM7
n-Pentane
 H=-35.10,0.15 HR=C&P1970 I=10.3 IR=LLNBS82
  C     0.00000000 +0    0.0000000 +0    0.0000000 +0     0     0     0
  C     1.52839249 +1    0.0000000 +0    0.0000000 +0     1     0     0
  C     1.53442316 +1  110.9638828 +1    0.0000000 +0     2     1     0
  C     1.53388344 +1  110.8907893 +1  179.8870907 +1     3     2     1
  C     1.52840031 +1  110.9469141 +1  179.9509795 +1     4     3     2
  H     1.09571480 +1  111.1990572 +1  179.8987224 +1     5     4     3
  H     1.09568749 +1  111.4501295 +1   59.9416396 +1     5     4     3
  H     1.09567824 +1  111.4404187 +1  -60.1547744 +1     5     4     3
  H     1.10650343 +1  109.9085400 +1   58.0389330 +1     4     3     2
  H     1.10650718 +1  109.9153701 +1  -58.1162515 +1     4     3     2
  H     1.10591826 +1  109.9623481 +1   57.9637860 +1     3     2     1
  H     1.10595549 +1  109.9477734 +1  -58.1080052 +1     3     2     1
  H     1.10648904 +1  109.9229772 +1   58.0073553 +1     2     3     4
  H     1.10651879 +1  109.9124772 +1  -58.1460587 +1     2     3     4
  H     1.09570272 +1  111.1956864 +1 -179.9197716 +1     1     2     3
  H     1.09567007 +1  111.4452166 +1   60.1354857 +1     1     2     3
  H     1.09568335 +1  111.4552150 +1  -59.9674714 +1     1     2     3