Octahydro-1,2,4-ethanylylidene-1H-cyclobuta[cd]pentalene

Formula: C₁₁H₁₄
Molecular weight: 146.2289
CAS Registry Number: 4421-32-3
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Other data available:
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Gas phase thermochemistry data

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

Quantity	Value	Units	Method	Reference	Comment
S°_gas	78.94 ± 0.91	cal/mol*K	N/A	Kabo G.J., 1995	This value was calculated using the enthalpy of sublimation derived from effusion measurements. Other value, S(298.15 K)=336.2(3.4) J/mol*K, was calculated for enthalpy of sublimation determined calorimetrically.

Constant pressure heat capacity of gas

C_p,gas (cal/mol*K)	Temperature (K)	Reference
8.951	100.	Kabo G.J., 1995
13.57	164.40
17.54	200.
32.232	298.15
32.531	300.
49.025	400.
63.571	500.
75.554	600.
85.272	700.
93.260	800.
99.897	900.
105.46	1000.

References

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Kabo G.J., 1995
Kabo G.J., Thermodynamic properties of pentacyclo[5.4.0.0(2,6).0(3,10).0(5,9)]undecane, C11H14, J. Chem. Thermodyn., 1995, 27, 707-720. [all data]

Notes

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Symbols used in this document:

C_p,gas Constant pressure heat capacity of gas

S°_gas Entropy of gas at standard conditions
Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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C_p,gas	Constant pressure heat capacity of gas
S°_gas	Entropy of gas at standard conditions