Dicyanoacetylene
Names | |
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Preferred IUPAC name
But-2-ynedinitrile | |
Identifiers | |
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PubChem CID
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CompTox Dashboard (EPA)
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Properties | |
C4N2 | |
Molar mass | 76.058 g·mol−1 |
Density | 0.907 g/cm3 |
Melting point | 20.5 °C (68.9 °F; 293.6 K) |
Boiling point | 76.5 °C (169.7 °F; 349.6 K) |
Thermochemistry | |
Std enthalpy of (ΔfH⦵298)formation |
+500.4 kJ/mol |
Related compounds | |
Related compounds
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Carbon suboxide Cyanogen |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Dicyanoacetylene, also called carbon subnitride or but-2-ynedinitrile (
At room temperature, dicyanoacetylene is a clear liquid. Because of its high
Synthesis
Dicyanoacetylene can be prepared by passing
As a reagent in organic chemistry
Dicyanoacetylene is a powerful
In outer space
Solid dicyanoacetylene has been detected in the atmosphere of Titan by infrared spectroscopy.[4] As the seasons change on Titan, the compound condenses and evaporates in a cycle, which allows scientists on Earth to study Titanian meteorology.
As of 2006[update], the detection of dicyanoacetylene in the interstellar medium has been impossible, because its symmetry means it has no rotational microwave spectrum. However, similar asymmetric molecules like cyanoacetylene have been observed, and its presence in those environments is therefore suspected.[5]
See also
- Cyanogen, N≡C−C≡N
- Diacetylene, H−C≡C−C≡C−H
- Cyanopolyynes
References
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