Accuracy

maleic anhydride   1320 Maleic anhydride

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    #  Species Formula
  1310 Diboron trioxide (Geo)B2O3
  1311 B2O3H2H2B2O3
  1312 B2O3H2 (Geo)H2B2O3
  1313 B3O3H3H3B3O3
  1314 B3O3H3 (Geo)H3B3O3
  1315 1,3,5-TrioxaneC3H6O3
  1316 Methyl hydroxyacetateC3H6O3
  1317 GlycerolC3H8O3
  1318 Trimethoxyborane (Geo)H9BC3O3
  1319 TrimethoxyboraneH9BC3O3
  1320 Maleic anhydride C4H2O3
  1321 Acetic anhydrideC4H6O3
  1322 TrimethoxymethaneC4H10O3
  1323 2,5,8-TrioxanonaneC6H14O3
  1324 TriethoxyboraneH15BC6O3
  1325 m-Salicylic acidC7H6O3
  1326 o-Salicylic acidC7H6O3
  1327 p-Salicylic acidC7H6O3
  1328 2,3-Butanediol, 2,3-dimethyl-, monoformateC7H14O3
  1329 Trimethoxymethyl benzeneC10H14O3
  1330 1-tert-Butoxy-3-propoxy-2-propanolC10H22O3


ΔHf: -95.2 kcal/mol,     REF: J. O. Cox, G. Pilcher, "Thermochemistry of Organic and Organometallic Compounds," Academic Press, New York, N.Y., 1970.
I.P.: 10.8 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
Maleic anhydride
 H=-95.2 HR=C&P1970 I=10.84 IR=LLNBS82
  C     0.00000000 +0    0.0000000 +0    0.0000000 +0     0     0     0
  C     1.33703995 +1    0.0000000 +0    0.0000000 +0     1     0     0
  C     1.50112483 +1  108.4585930 +1    0.0000000 +0     2     1     0
  C     1.50111317 +1  108.4188854 +1    0.0015600 +1     1     2     3
  O     1.40442791 +1  107.0143602 +1   -0.0005262 +1     3     2     1
  O     1.18763154 +1  132.4749854 +1  179.9921891 +1     3     2     1
  O     1.18782770 +1  132.3275414 +1 -179.9929390 +1     4     1     2
  H     1.07658557 +1  130.6529131 +1 -179.9994975 +1     1     2     3
  H     1.07674322 +1  130.6113405 +1 -179.9945061 +1     2     1     4