Cyclobutadiene

Formula: C₄H₄
Molecular weight: 52.0746
IUPAC Standard InChI: InChI=1S/C4H4/c1-2-4-3-1/h1-4H
IUPAC Standard InChIKey: HWEQKSVYKBUIIK-UHFFFAOYSA-N
CAS Registry Number: 1120-53-2
Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript.
Permanent link for this species. Use this link for bookmarking this species for future reference.
Information on this page:
Other data available:
- Gas phase ion energetics data
- Vibrational and/or electronic energy levels
Data at other public NIST sites:
- Gas Phase Kinetics Database
Options:
- Switch to calorie-based units

Gas phase thermochemistry data

Data compiled by: Glushko Thermocenter, Russian Academy of Sciences, Moscow

Constant pressure heat capacity of gas

C_p,gas (J/mol*K)	Temperature (K)	Reference
33.26	50.	Dorofeeva O.V., 1986
33.62	100.
36.51	150.
42.86	200.
56.06	273.15
61.0 ± 2.5	298.15
61.33	300.
80.07	400.
95.64	500.
108.03	600.
117.99	700.
126.17	800.
133.02	900.
138.83	1000.
143.79	1100.
148.05	1200.
151.73	1300.
154.90	1400.
157.65	1500.

References

Go To: Top, Gas phase thermochemistry data, Notes

Dorofeeva O.V., 1986
Dorofeeva O.V., Thermodynamic properties of twenty-one monocyclic hydrocarbons, J. Phys. Chem. Ref. Data, 1986, 15, 437-464. [all data]

Notes

Go To: Top, Gas phase thermochemistry data, References

Symbols used in this document:

C_p,gas Constant pressure heat capacity of gas
Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the Database.
Customer support for NIST Standard Reference Data products.