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Properties of substance:

carbon suboxide



skc-file

Group of substances:

organic

Physical appearance:

colorless gas

Empirical formula (Hill's system for organic substances):

C3O2

Structural formula as text:

O=C=C=C=O

Molar/atomic mass: 68.03

Melting point (°C):

-111.3

Boiling point (°C):

7

Solubility (g/100 g of solvent):

1,4-dioxane: soluble [Ref.]
carbon disulphide: soluble [Ref.]
diethyl ether: soluble [Ref.]
tetrahydrofuran: soluble [Ref.]
water: reaction [Ref.]
xylene: soluble [Ref.]

Interatomic distances and bond angles:

Interatomic distances (in pm): 116 (C=O)
Interatomic distances (in pm): 128 (С=С)

Numerical data:

Year of discovery: 1906

Density:

1.114 (0°C, g/cm3)

Reactions:

  1. Yeild 47%. [Ref.1aster]
    2CH3Li + C3O2 → CH3C(OLi)=C=C(OLi)CH3
    CH3C(OLi)=C=C(OLi)CH3 + 2H2O → CH3COCH2COCH3 + 2LiOH
  2. Yeild 100%. [Ref.1]
    C3O2 + 2H2O → CH2(COOH)2

Refractive index (nD):

1.4538 (6°C)

Vapour pressure (Torr):

1 (-94.8°C)
10 (-71°C)
100 (-36.9°C)
573.5 (0°C)

Standard molar enthalpy (heat) of formation ΔfH0 (298.15 K, kJ/mol):

-93.6 (g)

Standard molar entropy S0 (298.15 K, J/(mol·K)):

276.1 (g)

Molar heat capacity at constant pressure Cp (298.15 K, J/(mol·K)):

66.99 (g)

References:

  1. Binneweis M., Milke E. Thermochemical Data of Elements and Compounds. - 2ed, 2002. - pp. 267
  2. Dictionary of organic compounds. - Vol.1, Abadole-Cytosine. - New York, 1953. - pp. 428
  3. Dictionary of organic compounds. - vol.1, Abietic acid - Dypnone. - London, 1946. - pp. 398
  4. The Merck Index 11th ed., Merck & Company, 1989. - pp. 275-276
  5. Некрасов Б.В. Основы общей химии. - Т.1. - М.: Химия, 1973. - pp. 513 [Russian]
  6. Реми Г. Курс неорганической химии. - Т.1. - М., 1963. - pp. 481 [Russian]
  7. Руководство по неорганическому синтезу. - Т.3, под ред. Брауэра Г. - М.: Мир, 1985. - pp. 682-684 [Russian]
  8. Справочник химика. - 2 изд., Т.1. - Л.-М.: Химия, 1966. - pp. 605 [Russian]
  9. Справочник химика. - Т. 2. - Л.-М.: Химия, 1964. - pp. 228-229 [Russian]
  10. Успехи химии. - 1967. - Т.36, №6. - pp. 947-964 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru