Accuracy

###
900 Carbon suboxide

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###  |  |
# | Species | Formula
890 | Formic acid (Geo) | CH2O2 |
891 | trans Glyoxal (Geo) | C2H2O2 |
892 | trans Glyoxal | C2H2O2 |
893 | Acetate, anion | C2H3O2 |
894 | Acetic acid | C2H4O2 |
895 | Methyl formate (Geo) | C2H4O2 |
896 | Methyl formate | C2H4O2 |
897 | Dimethyl peroxide | C2H6O2 |
898 | Ethylene glycol | C2H6O2 |
899 | Carbon suboxide (Geo) | C3O2 |
900 | Carbon suboxide | C3O2 |
901 | 2-Oxo-propanal | C3H4O2 |
902 | 2-Propenoic acid | C3H4O2 |
903 | beta-Propiolactone | C3H4O2 |
904 | 1,3-Dioxalane | C3H6O2 |
905 | Ethyl formate | C3H6O2 |
906 | Methyl acetate | C3H6O2 |
907 | Propionic acid | C3H6O2 |
908 | 1,3-Propanediol | C3H8O2 |
909 | 2-Methoxyethanol | C3H8O2 |
910 | Dimethoxymethane | C3H8O2 |

ΔHf: -22.4 kcal/mol
I.P.: 10.6 eV, REF:

    Carbon suboxide
     H=-22.4 HR=C&P1970 I=10.6 IR=LLNBS82 HWT=0.5
      O     0.00000000 +0    0.0000000 +0    0.0000000 +0     0     0     0
      C     1.16193078 +1    0.0000000 +0    0.0000000 +0     1     0     0
      C     1.28255097 +1  180.0000000 +0    0.0000000 +0     2     1     0
      C     1.28255647 +1  180.0000000 +0    0.0000000 +0     3     2     1
      O     1.16193322 +1  179.0000000 +0    0.0000000 +0     4     3     2