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Properties of substance:

thiophene



skc-file

Group of substances:

organic

Physical appearance:

colorless liquid

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

C4H4S

Structural formula as text:

(CH=CH)2S

Molar/atomic mass: 84.14

Melting point (°C):

-38.3

Boiling point (°C):

84.12

Solubility (g/100 g of solvent):

1,4-dioxane: miscible [Ref.]
acetone: soluble [Ref.]
benzene: soluble [Ref.]
carbon tetrachloride: miscible [Ref.]
diethyl ether: miscible [Ref.]
ethanol: miscible [Ref.]
pyridine: miscible [Ref.]
toluene: miscible [Ref.]
water: 0.3015 (25°C) [Ref.]

Numerical data:

Year of discovery: 1882
Interatomic distances (in pm): 137
Interatomic distances (in pm): 142
Interatomic distances (in pm): 108
Interatomic distances (in pm): 108
Interatomic distances (in pm): 171
Bond angles (in degrees): 92
Bond angles (in degrees): 111
Bond angles (in degrees): 112
Bond angles (in degrees): 120
Bond angles (in degrees): 124

Density:

1.0644 (20°C, g/cm3)

Reactions:

  1. Yeild 71-74%. [Ref.1]
    C4H4S + C6H5N(CH3)CHO → C4H3SCHO + C6H5NHCH3

Refractive index (nD):

1.5289 (20°C)

Dipole moment (D):

0.55 (20°C)

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

-82 (l)

Molar enthalpy (heat) of fusion ΔfusH (kJ/mol):

59.04

Enthalpy (heat) of vaporization ΔvapH (kJ/mol):

34.47

Heat of combustion (kJ/mol):

2805.4

Critical temperature (°C):

312

Critical pressure (MPa):

4.56

References:

  1. CRC Handbook of Chemistry and Physics. - 90ed. - CRC Press, 2010. - pp. 5-25
  2. Yalkowsky S.H., Yan H., Jain P. Handbook of aqueous solubility data. – 2nd ed. - CRC Press, 2010. - pp. 86
  3. Гетероциклические соединения. - Т. 1, Под ред. Эльдерфилда Р. - М.: ИИЛ, 1953. - pp. 167-191 [Russian]
  4. Общая органическая химия. - Т. 9, под ред. Бартона Д. и Оллиса В.Д. - М.: Химия, 1985. - pp. 229-263 [Russian]
  5. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 182 [Russian]
  6. Справочник азотчика. - Т. 1. - М.: Химия, 1967. - pp. 291-292 [Russian]
  7. Химическая энциклопедия. - Т. 4. - М.: Советская энциклопедия, 1995. - pp. 582-583 [Russian]
  8. Химия: справочное руководство. - Под ред. Гаврюченкова Ф.Г., Курочкиной М.И. и др. - Л.: Химия, 1975. - pp. 365, 367 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru